Article
Astronomy & Astrophysics
Shunke Ai, Bing Zhang
Summary: The study investigated blastwaves driven by magnetized ejecta and extended the mechanical model, showing better energy conservation performance. Testing the model, it was found that the deviation from energy conservation is negligibly small at small radii.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Hua-Yang Li, Hao-Ning He, Da-Ming Wei, Zhi-Ping Jin
Summary: This study focuses on the multiwavelength afterglow radiation of GRB 200415A and finds that the contribution of the forward and reverse shocks varies in different wavelength bands. Additionally, future telescopes are predicted to detect the optical and infrared afterglow emission from giant flares similar to GRB 200415A.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Xiao-Li Huang, Ze-Rui Wang, Ruo-Yu Liu, Xiang-Yu Wang, En-Wei Liang
Summary: The study shows that the SSC emission from GRB afterglows in homogeneous and wind environments exhibit different characteristics and trends. Additionally, higher SSC flux is observed in high-density environments, but at the same time, more severe internal gamma-gamma absorption is also present.
ASTROPHYSICAL JOURNAL
(2021)
Article
Astronomy & Astrophysics
I Contopoulos, A. Strantzalis, D. Papadopoulos, D. Kazanas
Summary: The study focuses on long Gamma-Ray Bursts and proposes an electrodynamic model to explain their distinct characteristics, linking the sharp rise to the magnetic field winding by a fast-rotating core and the exponential decay to the electromagnetic spin-down of the core. Non-axisymmetric distortion generates gravitational waves with exponentially decreasing frequency, and specific time intervals are provided for testing the predicted waveforms in LIGO archival data.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Vlasta Valan, Josefin Larsson
Summary: A study found that a small fraction of gamma-ray bursts (GRBs) exhibit blackbody emission in the X-ray spectra and the properties of the blackbody emission vary significantly, possibly associated with different parts of the jet.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Jing-Ze Ma, Bing Zhang
Summary: This study investigates the influence of different magnetic field geometries on relativistic shocks. The results show that the tangential magnetization has a greater impact on the jump conditions, regardless of the inclination angles or anisotropy of the magnetic field. The approximated analytical solution developed in this work is significant for numerical simulations and theoretical studies.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Christopher Thompson
Summary: This study examines the emission of intense radio pulses by flaring magnetars. It is found that small-scale current gradients can be imprinted into a strongly magnetized outflow through processes similar to those that generate fireball radiation in the closed magnetosphere. The emission process involves a combination of crustal yielding, internal tearing, and turbulent cascade. The formation of internal shocks in the outflow from a bursting, rotating magnetar is outlined, and a treatment for shocks with extreme magnetization is developed.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2023)
Article
Astronomy & Astrophysics
O. Teboul, N. J. Shaviv
Summary: This study investigates linear polarization in gamma-ray burst afterglows and finds that the presence of an ordered magnetic field component can affect polarization features. Different observer positions result in varying polarization angle changes, with the ordered component potentially detectable even if significantly weaker than the random one.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Daniel J. D'Orazio, Zoltan Haiman, Janna Levin, Johan Samsing, Alejandro Vigna-Gomez
Summary: The LIGO-Virgo-KAGRA Collaboration detected gravitational waves from black hole-neutron star binary systems and used the combined data to constrain the magnetic field strength on the neutron star's surface.
ASTROPHYSICAL JOURNAL
(2022)
Article
Astronomy & Astrophysics
Jirong Mao, Jiancheng Wang
Summary: The jitter radiation mechanism is proposed as a possible explanation for producing very high energy (VHE) photons emitted by high-energy objects, such as gamma-ray bursts. It has the potential to be applied to various types of VHE sources and offers a new perspective on understanding VHE emissions.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2021)
Article
Astronomy & Astrophysics
Mi-Xiang Lan, Hao-Bing Wang, Siyao Xu, Siming Liu, Xue-Feng Wu
Summary: The internal shock model can reproduce features of gamma-ray burst light curves, and polarization predictions can be used to test models. The presence of a magnetic field in the IS model may affect the polarization of GRB prompt emission.
ASTROPHYSICAL JOURNAL
(2021)
Article
Astronomy & Astrophysics
Tsun Hin Navin Tsung, S. Peng Oh, Yan-Fei Jiang
Summary: Recently, it has been found that cosmic rays can drive galactic winds and small-scale processes can affect global wind properties. By studying the effects of phase-shifted cosmic ray forces and cosmic ray heating on sound waves, it has been discovered that non-linear sound wave growth can lead to a series of propagating shocks and create cosmic ray bottlenecks. The presence of bottlenecks and their interaction with gas pressure gradients can significantly impact mass outflow rates and induce thermal instability and observable shocks on scales similar to kpc.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Donald C. Warren, Catherine A. A. Beauchemin, Maxim Barkov, Shigehiro Nagataki
Summary: The study examines electron interactions with shocks in the presence of microturbulent fields through Monte Carlo simulations, determining factors influencing maximum electron momentum and estimating methods through analysis of parameter space.
ASTROPHYSICAL JOURNAL
(2021)
Article
Astronomy & Astrophysics
Matteo Lucca, Laura Sagunski, Federico Guercilena, Christian M. Fromm
Summary: This paper establishes a simple toy model to study the gravitational dynamics of binary neutron star systems, validating the model through numerical simulations and spectral analysis, further exploring the source of low-frequency peaks in the gravitational wave power spectrum. Additionally, two relations between the initial properties of the system and the angular momentum of the post-merger remnant are presented.
JOURNAL OF HIGH ENERGY ASTROPHYSICS
(2021)
Article
Astronomy & Astrophysics
Alberto Sciaccaluga, Fabrizio Tavecchio
Summary: This article discusses the characteristics and radiation mechanisms of extreme TeV BL Lac blazars, proposing a new scenario in which non-thermal particles interact with turbulence in the jet. By solving a system of nonlinear coupled Fokker-Planck equations, the interaction is simulated and compared with observational data.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2022)
Article
Astronomy & Astrophysics
Kyle Parfrey, Anatoly Spitkovsky, Andrei M. Beloborodov
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2017)
Article
Astronomy & Astrophysics
Lorenzo Sironi, Anatoly Spitkovsky
ASTROPHYSICAL JOURNAL LETTERS
(2009)
Article
Astronomy & Astrophysics
Xue-Ning Bai, Anatoly Spitkovsky
ASTROPHYSICAL JOURNAL
(2010)
Article
Astronomy & Astrophysics
Yan-Fei Jiang, Luca Ciotti, Jeremiah P. Ostriker, Anatoly Spitkovsky
ASTROPHYSICAL JOURNAL
(2010)
Article
Astronomy & Astrophysics
Mario A. Riquelme, Anatoly Spitkovsky
ASTROPHYSICAL JOURNAL
(2010)
Article
Astronomy & Astrophysics
Xue-Ning Bai, Anatoly Spitkovsky
ASTROPHYSICAL JOURNAL
(2010)
Article
Astronomy & Astrophysics
Dimitrios Giannios, Anatoly Spitkovsky
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
(2009)
Article
Physics, Fluids & Plasmas
M. Gedalin, M. Medvedev, A. Spitkovsky, V. Krasnoselskikh, M. Balikhin, A. Vaivads, S. Perri
PHYSICS OF PLASMAS
(2010)
Article
Physics, Multidisciplinary
Alexander Philippov, Andrey Timokhin, Anatoly Spitkovsky
PHYSICAL REVIEW LETTERS
(2020)
Article
Astronomy & Astrophysics
Fabio Cruz, Thomas Grismayer, Alexander Y. Chen, Anatoly Spitkovsky, Luis O. Silva
Summary: In this study, simulations of pair cascades in pulsar polar caps show that the plasma self-consistently develops an inclination with respect to the local magnetic field, favoring the generation of coherent electromagnetic modes consistent with pulsar radio emission. The emission peaks along the magnetic axis and near the polar cap edge, potentially explaining the core and conal components of pulsar radio emission.
ASTROPHYSICAL JOURNAL LETTERS
(2021)
Article
Astronomy & Astrophysics
J. F. Mahlmann, A. A. Philippov, A. Levinson, A. Spitkovsky, H. Hakobyan
Summary: One possible scenario for the generation of fast radio bursts (FRBs) is magnetic reconnection in a current sheet of the magnetar wind. The study investigates this scenario using simulations and finds that a fraction of the reconnected magnetic field energy can be converted into high-frequency magnetosonic waves, which escape as radio emissions.
ASTROPHYSICAL JOURNAL LETTERS
(2022)
Article
Astronomy & Astrophysics
Rui Xu, Anatoly Spitkovsky, Damiano Caprioli
ASTROPHYSICAL JOURNAL LETTERS
(2020)
Article
Astronomy & Astrophysics
Ilya Kuzichev, Ivan Y. Vasko, Angel Rualdo Soto-Chavez, Yuguang Tong, Anton Artemyev, Stuart D. Bale, Anatoly Spitkovsky
ASTROPHYSICAL JOURNAL
(2019)
Article
Astronomy & Astrophysics
Cole Holcomb, Anatoly Spitkovsky
ASTROPHYSICAL JOURNAL
(2019)
Proceedings Paper
Astronomy & Astrophysics
Robyn Scott, Brian Reville, Anatoly Spitkovsky
HIGH ENERGY GAMMA-RAY ASTRONOMY
(2017)