☆ 4.6 Article

On discrepancy between ATIC and Fermi data

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2009)

Journal

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS

Volume -, Issue 7, Pages -

Publisher

IOP PUBLISHING LTD

DOI: 10.1088/1475-7516/2009/07/038

Keywords

dark matter experiments; cosmic rays detectors; radio pulsars

Categories

Astronomy & Astrophysics Physics, Particles & Fields

Ask authors/readers for more resources

Protocol

Community support

Reagent

Community support

Abstract

Either ATIC or Fermi-LAT data can be fitted together with the PAMELA data by three components: primary background similar to E-3.3, secondary background similar to E-3.6, and an additional source of electrons similar to E-gamma a Exp(-E/E-cut). We find that the best fits for ATIC + PAMELA and for Fermi + PAMELA are approximately the same, gamma(a) approximate to 2 and E-cut similar to 500 GeV. However, the ATIC data have a narrow bump between 300 GeV and 600 GeV which contradicts the smooth Fermi spectrum. An interpretation of the ATIC bump as well as the featureless Fermi spectrum in terms of dark matter models and pulsars is discussed.

Authors

I am an author on this paper

Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.6

Not enough ratings

Secondary Ratings

Novelty

-

Significance

-

Scientific rigor

-

Rate this paper

Recommended

Article Physics, Multidisciplinary

Diurnal Effect of Sub-GeV Dark Matter Boosted by Cosmic Rays

Shao-Feng Ge, Jianglai Liu, Qiang Yuan, Ning Zhou

Summary: A new type of diurnal effect has been identified for cosmic ray boosted dark matter, where interactions with nuclei lead to modulation in DM flux making it accessible for direct detection. This provides a prominent signature for detecting boosted sub-GeV DM.

PHYSICAL REVIEW LETTERS (2021)

Add to Collection

Article Astronomy & Astrophysics

Leptophilic-portal dark matter in the light of AMS-02 positron excess

Sayan Ghosh, Amit Dutta Banik, Eung Jin Chun, Debasish Majumdar

Summary: The study proposes a dark matter model with an additional singlet boson and a singlet fermion to explain the positron excess reported by the AMS-02 satellite experiment. By mixing the additional (light) boson with the singlet fermion, the dark matter candidate annihilates through this bosonic portal. The model can successfully account for the positron fraction excess as well as the positron spectrum data reported by the AMS-02 experiment by considering various factors such as the Sommerfeld effect and appropriate boost factors.

PHYSICAL REVIEW D (2021)

Add to Collection

Article Astronomy & Astrophysics

Constraints on dark matter scattering with long lived mediators from observations of the Sun with the Fermi Large Area Telescope

D. Serini, F. Loparco, M. N. Mazziotta, S. De Gaetano, L. Di Venere, F. Gargano, L. Lorusso, G. Panzarini, R. Pillera

Summary: The Sun serves as a potential source for studying dark matter through indirect searches. This study investigates a scenario where dark matter annihilates into long-lived mediators that can escape from the Sun and decay into gamma rays. By analyzing data from the Fermi Large Area Telescope, no significant excess in the solar gamma-ray spectrum is observed, leading to constraints on the dark matter-nucleon scattering cross sections.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2023)

Add to Collection

Article Physics, Multidisciplinary

Limits to Gauge Coupling in the Dark Sector Set by the Nonobservation of Instanton-Induced Decay of Super-Heavy Dark Matter in the Pierre Auger Observatory Data

P. Abreu, M. Aglietta, J. M. Albury, I. Allekotte, K. Almeida Cheminant, A. Almela, R. Aloisio, J. Alvarez-Muniz, R. Alves Batista, J. Ammerman Yebra, G. A. Anastasi, L. Anchordoqui, B. Andrada, S. Andringa, C. Aramo, P. R. Araujo Ferreira, E. Arnone, J. C. Arteaga Velazquez, H. Asorey, P. Assis, G. Avila, E. Avocone, A. M. Badescu, A. Bakalova, A. Balaceanu, F. Barbato, J. A. Bellido, C. Berat, M. E. Bertaina, G. Bhatta, P. L. Biermann, V. Binet, K. Bismark, T. Bister, J. Biteau, J. Blazek, C. Bleve, J. Bluemer, M. Bohacova, D. Boncioli, C. Bonifazi, L. Bonneau Arbeletche, N. Borodai, A. M. Botti, J. Brack, T. Bretz, P. G. Brichetto Orchera, F. L. Briechle, P. Buchholz, A. Bueno, S. Buitink, M. Buscemi, M. Buesken, K. S. Caballero-Mora, L. Caccianiga, F. Canfora, I. Caracas, R. Caruso, A. Castellina, F. Catalani, G. Cataldi, L. Cazon, M. Cerda, J. A. Chinellato, J. Chudoba, L. Chytka, R. W. Clay, A. C. Cobos Cerutti, R. Colalillo, A. Coleman, M. R. Coluccia, R. Conceicao, A. Condorelli, G. Consolati, F. Contreras, F. Convenga, D. Correia dos Santos, C. E. Covault, S. Dasso, K. Daumiller, B. R. Dawson, J. A. Day, R. M. de Almeda, J. de Jesus, S. J. de Jong, J. R. T. de Mello Neto, I. De Mitri, J. de Oliveira, D. de Oliveira Franco, F. de Palma, V. de Souza, E. De Vito, A. Del Popolo, M. del Rio, O. Deligny, L. Deval, A. di Matteo, M. Dobre, C. Dobrigkeit, J. C. D'Olivo, L. M. Domingues Mendes, R. C. dos Anjos, M. T. Dova, J. Ebr, R. Engel, I. Epicoco, M. Erdmann, C. O. Escobar, A. Etchegoyen, H. Falcke, J. Farmer, G. Farrar, A. C. Fauth, N. Fazzini, F. Feldbusch, F. Fenu, B. Fick, J. M. Figueira, A. Filipcic, T. Fitoussi, T. Fodran, T. Fujii, A. Fuster, C. Galea, C. Galelli, B. Garcia, A. L. Garcia Vegas, H. Gemmeke, F. Gesualdi, A. Gherghel-Lascu, P. L. Ghia, U. Giaccari, M. Giammarchi, J. Glombitza, F. Gobbi, F. Gollan, G. Golup, M. Gomez Berisso, P. F. Gomez Vitale, J. P. Gongora, J. M. Gonzalez, N. Gonzalez, I. Goos, D. Gora, A. Gorgi, M. Gottowik, T. D. Grubb, F. Guarino, G. P. Guedes, E. Guido, S. Hahn, P. Hamal, M. R. Hampel, P. Hansen, D. Harari, V. M. Harvey, A. Haungs, T. Hebbeker, D. Heck, G. C. Hill, C. Hojvat, J. R. Hoerandel, P. Horvath, M. Hrabovsky, T. Huege, A. Insolia, P. G. Isar, P. Janecek, J. A. Johnsen, J. Jurysek, A. Kaeaepae, K. H. Kampert, B. Keilhauer, A. Khakurdikar, V. V. Kizakke Covilakam, H. O. Klages, M. Kleifges, J. Kleinfeller, F. Knapp, N. Kunka, B. L. Lago, N. Langner, M. A. Leigui de Oliveira, V. Lenok, A. Letessier-Selvon, I. Lhenry-Yvon, D. Lo Presti, L. Lopes, R. Lopez, L. Lu, Q. Luce, J. P. Lundquist, A. Machado Payeras, G. Mancarella, D. Mandat, B. C. Manning, J. Manshanden, P. Mantsch, S. Marafico, F. M. Mariani, A. G. Mariazzi, I. C. Maris, G. Marsella, D. Martello, S. Martinelli, O. Martinez Bravo, M. Mastrodicasa, H. J. Mathes, J. Matthews, G. Matthiae, E. Mayotte, S. Mayotte, P. O. Mazur, G. Medina-Tanco, D. Melo, A. Menshikov, S. Michal, M. I. Micheletti, L. Miramonti, S. Mollerach, F. Montanet, L. Morejon, C. Morello, M. Mostafa, A. L. Mueller, M. A. Muller, K. Mulrey, R. Mussa, M. Muzio, W. M. Namasaka, A. Nasr-Esfahani, L. Nellen, G. Nicora, M. Niculescu-Oglinzanu, M. Niechciol, D. Nitz, I. Norwood, D. Nosek, V. Novotny, L. Nozka, A. Nucita, L. A. Nunez, C. Oliveira, M. Palatka, J. Pallotta, P. Papenbreer, G. Parente, A. Parra, J. Pawlowsky, M. Pech, J. Pekala, R. Pelayo, J. Pena-Rodriguez, E. E. Pereira Martins, J. Perez Armand, C. Perez Bertolli, L. Perrone, S. Petrera, C. Petrucci, T. Pierog, M. Pimenta, V. Pirronello, M. Platino, B. Pont, M. Pothast, P. Privitera, M. Prouza, A. Puyleart, S. Querchfeld, J. Rautenberg, D. Ravignani, M. Reininghaus, J. Ridky, F. Riehn, M. Risse, V. Rizi, W. Rodrigues de Carvalho, J. Rodriguez Rojo, M. J. Roncoroni, S. Rossoni, M. Roth, E. Roulet, A. C. Rovero, P. Ruehl, A. Saftoiu, M. Saharan, F. Salamida, H. Salazar, G. Salina, J. D. Sanabria Gomez, F. Sanchez, E. M. Santos, E. Santos, F. Sarazin, R. Sarmento, C. Sarmiento-Cano, R. Sato, P. Savina, C. M. Schaefer, V. Scherini, H. Schieler, M. Schimassek, M. Schimp, F. Schlueter, D. Schmidt, O. Scholten, H. Schoorlemmer, P. Schovanek, F. G. Schroeder, J. Schulte, T. Schulz, S. J. Sciutto, M. Scornavacche, A. Segreto, S. Sehgal, R. C. Shellard, G. Sigl, G. Silli, O. Sima, R. Smau, R. Smida, P. Sommers, J. F. Soriano, R. Squartini, M. Stadelmaier, D. Stanca, S. Stanic, J. Stasielak, P. Stassi, A. Streich, M. Suarez-Duran, T. Sudholz, T. Suomijaervi, A. D. Supanitsky, Z. Szadkowski, A. Tapia, C. Taricco, C. Timmermans, O. Tkachenko, P. Tobiska, C. J. Todero Peixoto, B. Tome, Z. Torres, A. Travaini, P. Travnicek, C. Trimarelli, M. Tueros, R. Ulrich, M. Unger, L. Vaclavek, M. Vacula, J. F. Valdes Galicia, L. Valore, E. Varela, A. Vasquez-Ramirez, D. Veberic, C. Ventura, I. D. Vergara Quispe, V. Verzi, J. Vicha, J. Vink, S. Vorobiov, H. Wahlberg, C. Watanabe, A. A. Watson, A. Weindl, L. Wiencke, H. Wilczynski, D. Wittkowski, B. Wundheiler, A. Yushkov, O. Zapparrata, E. Zas, D. Zavrtanik, M. Zavrtanik, L. Zehrer

Summary: Instantons are nonperturbative solutions to Yang-Mills equations, indicating quantum tunneling phenomena between different vacua. We analyze data from the Pierre Auger Observatory to search for signs of instanton-induced processes, suggesting the decay of super-heavy particles in the Galactic halo. By not observing these signatures, we establish an upper limit on the coupling constant of gauge interactions in the dark sector: alpha X < 0.09, for 109 < MX < 1019 GeV. Furthermore, we find that a reduced coupling constant of alpha X = 0.09 excludes masses MX greater than or similar to 3 x 1013 GeV. These constraints complement those obtained from the nonobservation of tensor modes in the cosmic microwave background, providing insights into dark matter production.

PHYSICAL REVIEW LETTERS (2023)

Add to Collection

Article Physics, Multidisciplinary

Starburst Galactic Nuclei as Light Dark Matter Laboratories

Antonio Ambrosone, Marco Chianese, Damiano F. G. Fiorillo, Antonio Marinelli, Gennaro Miele

Summary: Starburst galaxies are potential sources of high-energy gamma rays, and their cosmic-ray spectrum distortion can be indirectly observed. Current data provide tight bounds on the cross section between protons and dark matter, while future measurements are expected to significantly improve these limits.

PHYSICAL REVIEW LETTERS (2023)

Add to Collection

Article Astronomy & Astrophysics

Indirect dark matter searches at ultrahigh energy neutrino detectors

Claire Guepin, Roberto Aloisio, Austin Cummings, Luis A. Anchordoqui, John F. Krizmanic, Angela Olinto, Mary Hall Reno, Tonia M. Venters

Summary: The study demonstrates that next-generation high-energy neutrino detectors such as POEMMA and GRAND have unique advantages for probing dark matter properties, improving sensitivity and comparing with existing constraints. Additionally, the uncertainties related to dark matter distribution in the galactic halo play an important role in the research outcomes.

PHYSICAL REVIEW D (2021)

Add to Collection

Article Astronomy & Astrophysics

Evidence of High-energy Neutrinos from SN1987A by Kamiokande-II and IMB

Yuichi Oyama

Summary: Possible evidence of high-energy neutrinos from SN1987A was found through the observation of upward-going muons recorded by the Kamiokande-II experiment and the IMB experiment.

ASTROPHYSICAL JOURNAL (2022)

Add to Collection

Article Astronomy & Astrophysics

The Andromeda gamma-ray excess: background systematics of the millisecond pulsars and dark matter interpretations

Fabian Zimmer, Oscar Macias, Shin'ichiro Ando, Roland M. Crocker, Shunsaku Horiuchi

Summary: The cause of an excess in gamma rays in the direction of M31 has been unclear, with interpretations focusing on dark matter or stellar origins. By studying a similar excess in the Milky Way center, researchers have found a correlation between the signal's spatial morphology and the distribution of stellar mass in M31. However, uncertainties in the astrophysical gamma-ray foreground model make determining the best theory for the excess emission challenging. This study analyzes the M31 gamma-ray excess using state-of-the-art templates for stellar mass distribution and improved astrophysical foreground models, finding that unresolved millisecond pulsars can explain the observed gamma-ray characteristics.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2022)

Add to Collection

Article Astronomy & Astrophysics

Dark matter and gravitational waves from a dark big bang

Katherine Freese, Martin Wolfgang Winkler

Summary: The hot big bang is believed to be the origin of all matter and radiation in the Universe. Primordial nucleosynthesis provides strong evidence for the existence of a hot plasma in the early Universe. This paper describes a scenario in which dark matter can be formed around or even after primordial nucleosynthesis in a second big bang, called the dark big bang. The dark big bang occurs through a phase transition in the dark sector.

PHYSICAL REVIEW D (2023)

Add to Collection

Article Astronomy & Astrophysics

Searching for dark-matter waves with PPTA and QUIJOTE pulsar polarimetry

Andres Castillo, Jorge Martin-Camalich, Jorge Terol-Calvo, Diego Blas, Andrea Caputo, Ricardo Tanausu Genova Santos, Laura Sberna, Michael Peel, Jose Alberto Rubino-Martin

Summary: This study investigates the impact of axion-like particles on the polarization of photons emitted by astrophysical sources as they propagate through a dark matter medium. By analyzing data from the QUIJOTE MFI instrument and the Parkes Pulsar Timing Array project, the researchers find the strongest constraints on the axion-photon coupling and discuss the potential sensitivity to axionic dark matter in the future using pulsar polarimetry.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2022)

Add to Collection

Article Astronomy & Astrophysics

Quasiextremal primordial black holes are a viable dark matter candidate

Jose A. de Freitas Pacheco, Elias Kiritsis, Matteo Lucca, Joseph Silk

Summary: This paper proposes a phenomenological model regarding the survival of primordial black holes as a significant dark matter component, showing that cosmological and astrophysical constraints disappear under reasonable degrees of quasiextremality.

PHYSICAL REVIEW D (2023)

Add to Collection

Article Astronomy & Astrophysics

Domain of thermal dark matter candidates

Rupert Coy, Thomas Hambye, Michel H. G. Tytgat, Laurent Vanderheyden

Summary: The paper investigates the possible parameter space of thermal dark matter candidates, defining their range based on model-independent theoretical considerations and observational constraints. Three simplified dark matter scenarios are presented in the paper to demonstrate their fit into the domain.

PHYSICAL REVIEW D (2021)

Add to Collection

Article Physics, Multidisciplinary

Radio-frequency Dark Photon Dark Matter across the Sun

Haipeng An, Fa Peng Huang, Jia Liu, Wei Xue

Summary: The Dark Photon, a candidate for ultralight dark matter, can be detected using radio telescopes during solar observations. The conversion of dark photon dark matter into photons in the solar corona allows for efficient detection. Radio telescopes offer high sensitivity in specific frequency ranges, leading to promising results for future experiments.

PHYSICAL REVIEW LETTERS (2021)

Add to Collection

Article Astronomy & Astrophysics

Measurement of atmospheric muon angular distribution using a portable setup of liquid scintillator bars

Hariom Sogarwal, Prashant Shukla

Summary: Measurements of muon zenith angle distributions and vertical flux using a portable setup of liquid scintillator bars are reported in this study. Energy deposition and timing of scintillators are utilized to construct two dimensional tracks for charged particles and obtain their angles. The analysis method is improved to obtain a clean muon spectrum. The study also suggests that a setup of three bars can be used for quicker and more precise measurements.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2022)

Add to Collection

Article Astronomy & Astrophysics

Radio excess from stimulated dark matter decay

Andrea Caputo, Hongwan Liu, Siddharth Mishra-Sharma, Maxim Pospelov, Joshua T. Ruderman

Summary: In this paper, a new class of dark sector models is proposed, where dark photons oscillate into ordinary photons that contribute to the radio background, explaining both its magnitude and spectral index. These models predict new relativistic degrees of freedom and spectral distortions of the cosmic microwave background, which could be detected in the next generation of experiments.

PHYSICAL REVIEW D (2023)

Add to Collection

Article Astronomy & Astrophysics

Machine learning methods for constructing probabilistic Fermi-LAT catalogs

A. Bhat, D. Malyshev

Summary: This article discusses the probabilistic classification of Fermi-LAT sources using machine learning methods. The authors determine the classification of pulsars, active galactic nuclei (AGNs), and other sources by comparing different meta-parameters of the machine learning methods. The results show that the three-class classification performs similarly to the two-class classification in terms of reliability and does not require adjustment for the presence of other sources.

ASTRONOMY & ASTROPHYSICS (2022)

Add to Collection

Article Astronomy & Astrophysics

Optical intensity interferometry lab tests in preparation of stellar diameter measurements at IACTs at GHz photon rates

Andreas Zmija, Naomi Vogel, Gisela Anton, Dmitry Malyshev, Thilo Michel, Adrian Zink, Stefan Funk

Summary: Astronomical intensity interferometry simplifies large telescope baselines and high angular resolutions by measuring photon fluxes in individual telescopes instead of correlating electromagnetic waves' amplitudes. Measurements simulating starlight in the lab can achieve optical intensity correlations at reasonable signal-to-noise ratios.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2022)

Add to Collection

Article Astronomy & Astrophysics

Comparing different approaches for stellar intensity interferometry

Sebastian Karl, Andreas Zmija, Stefan Richter, Naomi Vogel, Dmitry Malyshev, Adrian Zink, Thilo Michel, Gisela Anton, Joachim von Zanthier, Stefan Funk

Summary: Stellar intensity interferometers can overcome the limitations of existing amplitude interferometers and measure the correlation signal of starlight without relying on phase coherence. Different operation modes can achieve high signal-to-noise ratio measurements.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2022)

Add to Collection

Article Astronomy & Astrophysics

Search for New Cosmic-Ray Acceleration Sites within the 4FGL Catalog Galactic Plane Sources

S. Abdollahi, F. Acero, M. Ackermann, L. Baldini, J. Ballet, G. Barbiellini, D. Bastieri, R. Bellazzini, B. Berenji, A. Berretta, E. Bissaldi, R. D. Blandford, R. Bonino, P. Bruel, S. Buson, R. A. Cameron, R. Caputo, P. A. Caraveo, D. Castro, G. Chiaro, N. Cibrario, S. Ciprini, J. Coronado-Blazquez, M. Crnogorcevic, S. Cutini, F. D'Ammando, S. De Gaetano, N. Di Lalla, F. Dirirsa, L. Di Venere, A. Dominguez, S. J. Fegan, A. Fiori, H. Fleischhack, A. Franckowiak, Y. Fukazawa, P. Fusco, V Gammaldi, F. Gargano, D. Gasparrini, F. Giacchino, N. Giglietto, F. Giordano, M. Giroletti, T. Glanzman, D. Green, I. A. Grenier, M-H Grondin, S. Guiriec, M. Gustafsson, A. K. Harding, E. Hays, J. W. Hewitt, D. Horan, X. Hou, G. Johannesson, T. Kayanoki, M. Kerr, M. Kuss, S. Larsson, L. Latronico, M. Lemoine-Goumard, J. Li, F. Longo, F. Loparco, P. Lubrano, S. Maldera, D. Malyshev, A. Manfreda, G. Marti-Devesa, M. N. Mazziotta, I Mereu, P. F. Michelson, N. Mirabal, W. Mitthumsiri, T. Mizuno, M. E. Monzani, A. Morselli, I. Moskalenko, E. Nuss, N. Omodei, M. Orienti, E. Orlando, J. F. Ormes, D. Paneque, Z. Pei, M. Persic, M. Pesce-Rollins, R. Pillera, H. Poon, T. A. Porter, G. Principe, S. Raino, R. Rando, B. Rani, M. Razzano, S. Razzaque, A. Reimer, O. Reimer, T. Reposeur, M. Sanchez-Conde, P. M. Saz Parkinson, L. Scotton, D. Serini, C. Sgro, E. J. Siskind, G. Spandre, P. Spinelli, K. Sueoka, D. J. Suson, H. Tajima, D. Tak, J. B. Thayer, D. F. Torres, E. Troja, J. Valverde, Z. Wadiasingh, K. Wood, G. Zaharijas

Summary: This study presents a comprehensive analysis of 311 4FGL catalog sources near the Galactic plane using data from the Fermi Large Area Telescope. A total of 56 sources with low-energy spectral breaks are identified, including supernova remnants, gamma-ray binaries, and star-forming regions. This analysis provides insights into the origin of gamma-ray emission and potential new sites of cosmic-ray acceleration.

ASTROPHYSICAL JOURNAL (2022)

Add to Collection

Article Astronomy & Astrophysics

Incremental Fermi Large Area Telescope Fourth Source Catalog

S. Abdollahi, F. Acero, L. Baldini, J. Ballet, D. Bastieri, R. Bellazzini, B. Berenji, A. Berretta, E. Bissaldi, R. D. Blandford, E. Bloom, R. Bonino, A. Brill, R. J. Britto, P. Bruel, T. H. Burnett, S. Buson, R. A. Cameron, R. Caputo, P. A. Caraveo, D. Castro, S. Chaty, C. C. Cheung, G. Chiaro, N. Cibrario, S. Ciprini, J. Coronado-Blazquez, M. Crnogorcevic, S. Cutini, F. D'Ammando, S. De Gaetano, S. W. Digel, N. Di Lalla, F. Dirirsa, L. Di Venere, A. Dominguez, V. Fallah Ramazani, S. J. Fegan, E. C. Ferrara, A. Fiori, H. Fleischhack, A. Franckowiak, Y. Fukazawa, S. Funk, P. Fusco, G. Galanti, V. Gammaldi, F. Gargano, S. Garrappa, D. Gasparrini, F. Giacchino, N. Giglietto, F. Giordano, M. Giroletti, T. Glanzman, D. Green, I. A. Grenier, M. -H. Grondin, L. Guillemot, S. Guiriec, M. Gustafsson, A. K. Harding, E. Hays, J. W. Hewitt, D. Horan, X. Hou, G. Johannesson, C. Karwin, T. Kayanoki, M. Kerr, M. Kuss, D. Landriu, S. Larsson, L. Latronico, M. Lemoine-Goumard, J. Li, I. Liodakis, F. Longo, F. Loparco, B. Lott, P. Lubrano, S. Maldera, D. Malyshev, A. Manfreda, G. Marti-Devesa, M. N. Mazziotta, I. Mereu, M. Meyer, P. F. Michelson, N. Mirabal, W. Mitthumsiri, T. Mizuno, A. A. Moiseev, M. E. Monzani, A. Morselli, I. V. Moskalenko, M. Negro, E. Nuss, N. Omodei, M. Orienti, E. Orlando, D. Paneque, Z. Pei, J. S. Perkins, M. Persic, M. Pesce-Rollins, V. Petrosian, R. Pillera, H. Poon, T. A. Porter, G. Principe, S. Raino, R. Rando, B. Rani, M. Razzano, S. Razzaque, A. Reimer, O. Reimer, T. Reposeur, M. Sanchez-Conde, P. M. Saz Parkinson, L. Scotton, D. Serini, C. Sgro, E. J. Siskind, D. A. Smith, G. Spandre, P. Spinelli, K. Sueoka, D. J. Suson, H. Tajima, D. Tak, J. B. Thayer, D. J. Thompson, D. F. Torres, E. Troja, J. Valverde, K. Wood, G. Zaharijas

Summary: An incremental version (4FGL-DR3) of the fourth Fermi Large Area Telescope (LAT) catalog of gamma-ray sources is presented, which contains 6658 sources based on the first 12 years of science data. The analysis improves on the previous catalog by introducing better spectral parameterization for pulsars and extending the spectral points to 1 TeV. Updates are made to the spectral parameters, spectral energy distributions, and associations for all sources.

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES (2022)

Add to Collection

Article Astronomy & Astrophysics

Improved binary solution for the gamma-ray binary 1FGL J1018.6-5856

B. van Soelen, S. Mc Keague, D. Malyshev, M. Chernyakova, N. Komin, N. Matchett, I. M. Monageng

Summary: The gamma-ray binary 1FGL J1018.6-5856 is composed of a star and an unknown compact object, and exhibits orbitally modulated emission. By measuring the radial velocity of the optical companion and analyzing X-ray and gamma-ray data, the orbital period and system parameters were determined, and the characteristics of the light curve were explained.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2022)

Add to Collection

Article Astronomy & Astrophysics

Gamma-ray observations of MAXI J1820+070 during the 2018 outburst

H. Abe, S. Abe, V. A. Acciari, T. Aniello, S. Ansoldi, L. A. Antonelli, A. Arbet Engels, C. Arcaro, M. Artero, K. Asano, D. Baack, A. Babic, A. Baquero, U. Barres de Almeida, J. A. Barrio, I Batkovic, J. Baxter, J. Becerra Gonzalez, W. Bednarek, E. Bernardini, M. Bernardos, A. Berti, J. Besenrieder, W. Bhattacharyya, C. Bigongiari, A. Biland, O. Blanch, G. Bonnoli, Z. Bosnjak, I Burelli, G. Busetto, R. Carosi, M. Carretero-Castrillo, G. Ceribella, Y. Chai, A. Chilingarian, S. Cikota, E. Colombo, J. L. Contreras, J. Cortina, S. Covino, G. D'Amico, V D'Elia, P. Da Vela, F. Dazzi, A. De Angelis, B. De Lotto, A. Del Popolo, M. Delfino, J. Delgado, C. Delgado Mendez, D. Depaoli, F. Di Pierro, L. Di Venere, D. Dominis Prester, A. Donini, D. Dorner, M. Doro, D. Elsaesser, G. Emery, V. Fallah Ramazani, L. Farina, A. Fattorini, L. Font, C. Fruck, S. Fukami, Y. Fukazawa, R. J. Garcia Lopez, M. Garczarczyk, S. Gasparyan, M. Gaug, J. G. Giesbrecht Paiva, N. Giglietto, F. Giordano, P. Gliwny, N. Godinovic, R. Grau, D. Green, J. G. Green, D. Hadasch, A. Hahn, T. Hassan, L. Heckmann, J. Herrera, J. Hoang, D. Hrupec, M. Hutten, R. Imazawa, T. Inada, R. Iotov, K. Ishio, I. Jimenez Martinez, J. Jormanainen, D. Kerszberg, Y. Kobayashi, H. Kubo, J. Kushida, A. Lamastra, D. Lelas, F. Leone, E. Lindfors, L. Linhoff, S. Lombardi, F. Longo, R. Lopez-Coto, M. Lopez-Moya, A. Lopez-Oramas, S. Loporchio, A. Lorini, E. Lyard, B. Machado de Oliveira Fraga, P. Majumdar, M. Makariev, G. Maneva, N. Mang, M. Manganaro, S. Mangano, K. Mannheim, M. Mariotti, M. Martinez, A. Mas Aguilar, D. Mazin, S. Menchiari, S. Mender, S. Micanovic, D. Miceli, T. Miener, J. M. Miranda, R. Mirzoyan, E. Molina, H. A. Mondal, A. Moralejo, D. Morcuende, V Moreno, T. Nakamori, C. Nanci, L. Nava, V Neustroev, M. Nievas Rosillo, C. Nigro, K. Nilsson, K. Nishijima, T. Njoh Ekoume, K. Noda, S. Nozaki, Y. Ohtani, T. Oka, A. Okumura, J. Otero-Santos, S. Paiano, M. Palatiello, D. Paneque, R. Paoletti, J. M. Paredes, L. Pavletic, M. Persic, M. Pihet, G. Pirola, F. Podobnik, P. G. Prada Moroni, E. Prandini, G. Principe, C. Priyadarshi, I Puljak, W. Rhode, M. Ribo, J. Rico, C. Righi, A. Rugliancich, N. Sahakyan, T. Saito, S. Sakurai, K. Satalecka, F. G. Saturni, B. Schleicher, K. Schmidt, F. Schmuckermaier, J. L. Schubert, T. Schweizer, J. Sitarek, V Sliusar, D. Sobczynska, A. Spolon, A. Stamerra, J. Striskovic, D. Strom, M. Strzys, Y. Suda, T. Suric, H. Tajima, M. Takahashi, R. Takeishi, F. Tavecchio, P. Temnikov, K. Terauchi, T. Terzic, M. Teshima, L. Tosti, S. Truzzi, A. Tutone, S. Ubach, J. van Scherpenberg, M. Vazquez Acosta, S. Ventura, V. Verguilov, I Viale, C. F. Vigorito, V. Vitale, I Vovk, R. Walter, M. Will, C. Wunderlich, T. Yamamoto, D. Zaric, H. Abdalla, F. Aharonian, F. Ait Benkhali, E. O. Anguner, H. Ashkar, M. Backes, V Baghmanyan, V. Barbosa Martins, R. Batzofin, Y. Becherini, D. Berge, K. Bernloehr, M. Bottcher, C. Boisson, J. Bolmont, M. de Bony de Lavergne, F. Bradascio, M. Breuhaus, R. Brose, F. Brun, T. Bulik, T. Bylund, F. Cangemi, S. Caroff, S. Casanova, M. Cerruti, T. Chand, S. Chandra, A. Chen, O. U. Chibueze, G. Cotter, P. Cristofari, J. Damascene Mbarubucyeye, J. Devin, A. Djannati-Atai, A. Dmytriiev, K. Egberts, J-P Ernenwein, A. Fiasson, G. Fichet de Clairfontaine, G. Fontaine, M. Fuessling, S. Funk, S. Gabici, S. Ghafourizadeh, G. Giavitto, D. Glawion, J. F. Glicenstein, P. Goswami, G. Grolleron, J. A. Hinton, M. Horbe, C. Hoischen, T. L. Holch, M. Holler, D. Horns, Zhiqiu Huang, M. Jamrozy, F. Jankowsky, V Joshi, I Jung-Richardt, E. Kasai, K. Katarzynski, U. Katz, B. Khelifi, W. Kluzniak, Nu Komin, K. Kosack, D. Kostunin, R. G. Lang, S. Le Stum, A. Lemiere, M. Lemoine-Goumard, J-P Lenain, F. Leuschner, T. Lohse, A. Luashvili, I Lypova, J. Mackey, J. Majumdar, D. Malyshev, D. Malyshev, V Marandon, P. Marchegiani, G. Marti-Devesa, R. Marx, G. Maurin, M. Meyer, A. Mitchell, R. Moderski, L. Mohrmann, A. Montanari, E. Moulin, J. Muller, T. Murach, K. Nakashima, M. de Naurois, A. Nayerhoda, J. Niemiec, A. Pniyana Noel, P. O'Brien, S. Ohm, L. Olivera-Nieto, E. de Ona Wilhelmi, M. Ostrowski, S. Panny, M. Panter, R. D. Parsons, V Poireau, D. A. Prokhorov, H. Prokoph, G. Puehlhofer, M. Punch, A. Quirrenbach, P. Reichherzer, A. Reimer, O. Reimer, M. Renaud, F. Rieger, G. Rowell, B. Rudak, H. Rueda Ricarte, E. Ruiz-Velasco, V Sahakian, H. Salzmann, A. Santangelo, M. Sasaki, J. Schaefer, F. Schussler, H. M. Schutte, U. Schwanke, J. N. S. Shapopi, H. Sol, A. Specovius, S. Spencer, L. Stawarz, R. Steenkamp, S. Steinmassl, C. Steppa, I Sushch, H. Suzuki, T. Takahashi, T. Tanaka, C. Thorpe-Morgan, M. Tluczykont, L. Tomankova, N. Tsuji, Y. Uchiyama, C. van Eldik, B. van Soelen, M. Vecchi, J. Veh, C. Venter, J. Vink, S. J. Wagner, R. White, A. Wierzcholska, Yu Wun Wong, A. Yusafzai, M. Zacharias, R. Zanin, D. Zargaryan, A. A. Zdziarski, A. Zech, S. J. Zhu, S. Zouari, N. Zywucka, A. Acharyya, C. B. Adams, P. Batista, W. Benbow, M. Capasso, J. L. Christiansen, A. J. Chromey, M. Errando, A. Falcone, Q. Feng, J. P. Finley, G. M. Foote, L. Fortson, A. Furniss, A. Gent, W. E. Hanlon, O. Hervet, J. Holder, B. Hona, T. B. Humensky, W. Jin, P. Kaaret, M. Kertzman, M. Kherlakian, T. K. Kleiner, S. Kumar, M. J. Lang, M. Lundy, G. Maier, C. E. McGrath, J. Millis, P. Moriarty, R. Mukherjee, S. O'Brien, R. A. Ong, N. Park, S. R. Patel, K. Pfrang, M. Pohl, E. Pueschel, J. Quinn, K. Ragan, P. T. Reynolds, D. Ribeiro, E. Roache, J. L. Ryan, I Sadeh, L. Saha, M. Santander, G. H. Sembroski, R. Shang, M. Splettstoesser, D. Tak, J. Tucci, A. Weinstein, D. A. Williams, T. J. Williamson, V Bosch-Ramon, C. Celma, M. Linares, D. M. Russell, G. Sala

Summary: This study presents the multiwavelength observations of MAXI J1820+070, a low-mass X-ray binary, and finds evidence of a non-thermal particle population. The results also provide constraints on the source properties, particularly in relation to the high-energy gamma-ray emitting region and its distance from the black hole.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2022)

Add to Collection

Article Physics, Multidisciplinary

Search for Dark Matter Annihilation Signals in the HESS Inner Galaxy Survey

H. Abdalla, F. Aharonian, F. Ait Benkhali, E. O. Anguner, C. Armand, H. Ashkar, M. Backes, V Baghmanyan, V. Barbosa Martins, R. Batzofin, Y. Becherini, D. Berge, K. Bernlohr, B. Bi, M. Bottcher, J. Bolmont, M. de Bony de Lavergne, R. Brose, F. Brun, F. Cangemi, S. Caroff, M. Cerruti, T. Chand, A. Chen, G. Cotter, J. Damascene Mbarubucyeye, J. Devin, A. Djannati-Atai, A. Dmytriiev, V Doroshenko, K. Egberts, A. Fiasson, G. Fichet de Clairfontaine, G. Fontaine, S. Funk, S. Gabici, G. Giavitto, D. Glawion, J. F. Glicenstein, M-H Grondin, J. A. Hinton, W. Hofmann, T. L. Holch, M. Holler, D. Horns, Zhiqiu Huang, M. Jamrozy, F. Jankowsky, E. Kasai, K. Katarzynski, U. Katz, B. Khelifi, Nu Komin, K. Kosack, D. Kostunin, G. Lamanna, M. Lemoine-Goumard, J-P Lenain, F. Leuschner, T. Lohse, A. Luashvili, I Lypova, J. Mackey, D. Malyshev, D. Malyshev, V Marandon, P. Marchegiani, G. Marti-Devesa, R. Marx, G. Maurin, M. Meyer, A. Mitchell, R. Moderski, A. Montanari, E. Moulin, J. Muller, M. de Naurois, J. Niemiec, A. Priyana Noel, S. Ohm, L. Olivera-Nieto, E. de Ona Wilhelmi, M. Ostrowski, S. Panny, M. Panter, R. D. Parsons, G. Peron, V Poireau, H. Prokoph, G. Puehlhofer, M. Punch, A. Quirrenbach, P. Reichherzer, A. Reimer, O. Reimer, M. Renaud, F. Rieger, G. Rowell, B. Rudak, H. Rueda Ricarte, E. Ruiz-Velasco, V Sahakian, H. Salzmann, A. Santangelo, M. Sasaki, F. Schussler, H. M. Schutte, U. Schwanke, M. Senniappan, J. N. S. Shapopi, H. Sol, A. Specovius, C. Stegmann, S. Steinmassl, C. Steppa, T. Takahashi, T. Tanaka, R. Terrier, C. Thorpe-Morgan, M. Tluczykont, M. Tsirou, N. Tsuji, Y. Uchiyama, C. van Eldik, J. Veh, J. Vink, S. J. Wagner, R. White, A. Wierzcholska, Yu Wun Wong, M. Zacharias, D. Zargaryan, A. A. Zdziarski, A. Zech, S. J. Zhu, S. Zouari, N. Zywucka

Summary: This study presents the first results of a search for dark matter (DM) particle annihilation signals in the central region of the Milky Way using observations from the Inner Galaxy Survey conducted with the H.E.S.S. array of telescopes. No significant gamma-ray excess is found, and exclusion limits on the annihilation cross section are set assuming different DM density profiles. The constraints obtained are the strongest in the TeV DM mass range so far.

PHYSICAL REVIEW LETTERS (2022)

Add to Collection

Article Astronomy & Astrophysics

Multiclass classification of Fermi-LAT sources with hierarchical class definition

Dmitry Malyshev, Aakash Bhat

Summary: In this paper, a machine learning approach with hierarchical determination of classes is proposed for multiclass classification of Fermi-LAT gamma-ray sources. The challenge lies in the small size of some classes, which have less than 10 associated sources. By using a hierarchical structure, control over class sizes can be achieved, and the performance of classification with different numbers of classes can be compared. The results show that classifications with few large classes perform similarly to classifications with many smaller classes, providing detailed information about the physical nature of the sources. Three probabilistic catalogues have been constructed as a result of this work, facilitating population studies and searches for possible counterparts of unassociated sources, such as active galactic nuclei, pulsars, or millisecond pulsars.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2023)

Add to Collection

Article Astronomy & Astrophysics

On the Nature of the Energy-dependent Morphology of the Composite Multi-TeV Gamma-Ray Source J1702-204

Felix Aharonian, Denys Malyshev, Maria Chernyakova

Summary: This study proposes a model to explain the energy-dependent morphology and fluxes of HESS J1702-420. The model suggests that a proton accelerator is located at the position of HESS J1702-420A and is embedded into a dense molecular cloud coinciding with HESS J1702-420B. The high-energy radiation of HESS J1702-420 is explained by pion-decay emission from continuously injected relativistic protons propagating through the dense cloud.

ASTROPHYSICAL JOURNAL (2023)

Add to Collection

Article Astronomy & Astrophysics

Prospects for annihilating dark matter from M31 and M33 observations with the Cherenkov Telescope Array

Miltiadis Michailidis, Lorenzo Marafatto, Denys Malyshev, Fabio Iocco, Gabrijela Zaharijas, Olga Sergijenko, Maria Isabel Bernardos, Christopher Eckner, Alexey Boyarsky, Anastasia Sokolenko, Andrea Santangelo

Summary: This paper presents studies on the expected sensitivity of the Cherenkov Telescope Array (CTA) to the annihilation signal of weakly interacting massive particles from M31 and M33. The research shows that a 100-hour observation campaign by CTA can improve the current limits on annihilation cross-sections by an order of magnitude and potentially detect the extended emission from the bulge of M31.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2023)

Add to Collection

Article Astronomy & Astrophysics

Search for primordial black hole dark matter with x-ray spectroscopic and imaging satellite experiments and prospects for future satellite missions

Denys Malyshev, Emmanuel Moulin, Andrea Santangelo

Summary: Based on current observations, ultralight primordial black holes (PBHs) are likely to constitute a significant fraction of the dark matter in the Universe. This study presents limits on these PBHs by considering the non-detection of Hawking radiation signals in the keV-MeV energy band. The results show that future missions could improve the constraints on PBHs.

PHYSICAL REVIEW D (2022)

Add to Collection

No Data Available

© Peeref 2019-2024. All rights reserved.