☆ 4.7 Article

Revisiting the non-thermal radiation from the Crab nebula: requiring two distinct electron components

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2015)

Journal

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY

Volume 451, Issue 3, Pages 3145-3150

Publisher

OXFORD UNIV PRESS

DOI: 10.1093/mnras/stv1140

Keywords

acceleration of particles; radiation mechanisms: non-thermal; ISM: individual objects: Crab Nebula; ISM: supernova remnants; gamma-rays: ISM

Categories

Astronomy & Astrophysics

Funding

National Natural Science Foundation of China (NSFC) [11433004, 11103016, 11173020]
Doctoral Fund of the Ministry of Education of China (RFDP) [20115301110005]
Key Project of the Chinese Ministry of Education [212160]
Top Talents Programme of Yunnan Province
Applied Basic Research Project of Yunnan Province [2011FB012]
Light of the Western Talent Training Project [W8090303]

Ask authors/readers for more resources

Protocol

Community support

Reagent

Community support

Abstract

We revisit the non-thermal radiation from the Crab nebula in the framework of a one-dimensional time-dependent model. In this model, two electron components are considered: a low-energy electron component, which has a power-law form, and a high-energy electron component, which has a power-lawform or a relativistic Maxwellian plus a high-energy power-law tail. After fitting the observed multiband data of the Crab nebula using the Levenberg-Marquardt method of the chi(2)-minimization procedure, we show the following. (i) Electron injection with a relativistic Maxwellian plus a power-law tail (i.e. one electron population) cannot account for the observed multiband emission of the Crab nebula. (ii) Two distinct electron populations are required, although their origins are still under debate, and moreover there would be a low-energy electron component having a power-law form with a slope of similar to 1.6 for the Crab nebula and Crab-like pulsar wind nebulae.

Authors

I am an author on this paper

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

Reviews

Primary Rating

4.7

Not enough ratings

Secondary Ratings

Novelty

-

Significance

-

Scientific rigor

-

Rate this paper

Recommended

Article Astronomy & Astrophysics

Cosmic ray electrons released by supernova remnants

G. Morlino, S. Celli

Summary: This study investigates the differences in spectra of cosmic ray electrons and protons, proposing two possible scenarios involving enhanced magnetic fields and time-dependent acceleration efficiency to explain the steeper electron spectra. The results indicate that both mechanisms are crucial in explaining the electron spectrum, and predict two additional spectral features in relation to existing observations.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2021)

Add to Collection

Article Astronomy & Astrophysics

Characterization of the gamma-ray emission from the Kepler supernova remnant with Fermi-LAT

F. Acero, M. Lemoine-Goumard, J. Ballet

Summary: A recent analysis confirmed the detection of GeV gamma-ray emission in the direction of the Kepler supernova remnant (SNR), which is consistent with other wavelength emissions and indicates interaction between accelerated particles and dense material in the SNR.

ASTRONOMY & ASTROPHYSICS (2022)

Add to Collection

Review Astronomy & Astrophysics

The Crab Pulsar and Nebula as Seen in Gamma-Rays

Elena Amato, Barbara Olmi

Summary: The detection of the Crab Nebula in Very High Energy gamma-ray astronomy over 30 years ago has continued to provide surprises and challenges to theories, with the recent discovery of photons with energy exceeding 1 PeV. These gamma-ray observations have significantly impacted our understanding of this extraordinary accelerator.

UNIVERSE (2021)

Add to Collection

Article Astronomy & Astrophysics

Cosmic ray protons and electrons from supernova remnants

P. Cristofari, P. Blasi, D. Caprioli

Summary: This study focuses on calculating the spectrum of cosmic ray protons and electrons released by supernovae of different types, taking into account various factors such as particle escape, adiabatic and radiative losses, and magnetic field amplification. The results show that the spectrum of electrons and protons released by a supernova remnant differ mainly at energies above 100-1000 GeV, which may be due to magnetic field amplification in the late stages of supernova remnant evolution. Further research is needed to determine whether this difference is caused by unknown acceleration effects or additional energy losses.

ASTRONOMY & ASTROPHYSICS (2021)

Add to Collection

Article Astronomy & Astrophysics

SOFIA/HAWC plus observations of the Crab Nebula: dust properties from polarized emission

Jeremy Chastenet, Ilse De Looze, Brandon S. Hensley, Bert Vandenbroucke, Mike J. Barlow, Jeonghee Rho, Aravind P. Ravi, Haley L. Gomez, Florian Kirchschlager, Juan Macias-Perez, Mikako Matsuura, Kate Pattle, Nicolas Ponthieu, Felix D. Priestley, Monica Relano, Alessia Ritacco, Roger Wesson

Summary: In this paper, the authors present the detection of polarized dust emission in the Crab pulsar wind nebula and constrain the composition and properties of the dust. They find the presence of large grains and the coexistence of carbonaceous and silicate grains in the Crab Nebula. The study also provides the temperature and mass ranges of the dust.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2022)

Add to Collection

Article Astronomy & Astrophysics

A source of gamma rays coincident with the shell of the supernova remnant CTB 80

M. Araya, C. Herrera

Summary: CTB 80 is a relatively old supernova remnant with a complex radio morphology, where GeV emissions are more significant at the location of the northern radio arm. The high-energy emission is believed to be produced by the interaction of GeV particles trapped or accelerated by the SNR with ambient material.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2021)

Add to Collection

Article Astronomy & Astrophysics

New estimation of the nuclear de-excitation line emission from the supernova remnant Cassiopeia A

Bing Liu, Rui-zhi Yang, Xin-yu He, Felix Aharonian

Summary: In this paper, we estimated the possible nuclear de-excitation lines from the young supernova remnant Cassiopeia A. The predicted fluxes of strong narrow line emissions from the remnant are highly model-dependent, and the detection probability of these line emissions against the MeV diffuse Galactic background was discussed under different assumptions of instrument response functions.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2023)

Add to Collection

Article Astronomy & Astrophysics

A study of GeV gamma-ray emission towards supernova remnant G51.26+0.11 and its molecular environment

Wen-Juan Zhong, Xiao Zhang, Yang Chen, Qian-Qian Zhang

Summary: In this study, the Fermi-LAT GeV gamma-ray emission in the SNR G51.26+0.11 region was reanalysed and its interstellar molecular environment was investigated using CO line data. The gamma-ray emission in this region was found to consist of a uniform-disc source ('Src A') and a point source (4FGL J1924.3+1628). The morphological coincidence between the SNR and the +54 km s(-1) molecular clouds, as well as the asymmetric or broad (CO)-C-12 line profiles near the SNR boundary, provide evidence for the interaction between the SNR and the molecular clouds.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2023)

Add to Collection

Article Engineering, Aerospace

A search for thermal X-ray emission from the composite supernova remnant G21.5-0.9 with Suzaku

Nergis C. Raycheva, Aytap Sezer

Summary: The study on G21.5-0.9 revealed that its X-ray spectrum includes both non-thermal and weak thermal components, with both models providing statistically acceptable fits. Simulations of the SNR using XRISM and Athena show the potential of these future missions in uncovering more about the thermal emission from G21.5-0.9.

ADVANCES IN SPACE RESEARCH (2022)

Add to Collection

Article Astronomy & Astrophysics

A Chandra X-ray study of supernova remnant N63A in the Large Magellanic Cloud

E. Karagoz, N. Alan, S. Bilir, S. Ak

Summary: We conducted extensive spectroscopy of the supernova remnant N63A in the Large Magellanic Cloud using Chandra archival data. The analysis of the spectra revealed abundance distributions for O, Ne, Mg, Si, and Fe. Evidence of enhanced O and possibly Ne and Mg were found in certain central regions, suggesting an asymmetric distribution of the ejecta. The average abundance ratios of the ejecta were consistent with the nucleosynthesis products from the explosion of a similar-mass progenitor.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2023)

Add to Collection

Article Astronomy & Astrophysics

Supernova remnant W51C: optical and X-ray emission analysis

J. Reyes-Iturbide, I Ramirez-Ballinas, M. Rosado, D. Nunez, P. Ambrocio-Cruz, L. Arias, R. Gabbasov

Summary: This paper presents observations of the optical and X-ray emissions from the Galactic supernova remnant W51C. The authors detected filaments that are part of the optical counterpart of the remnant and estimated various physical properties, including velocity and electron density. X-ray emission from the remnant was also explored, and a thermal model was fitted to estimate parameters such as temperature and luminosity. The derived initial energy and age of the supernova explosion were found to be in agreement with typical values for remnants.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2022)

Add to Collection

Article Astronomy & Astrophysics

A kinematic study of central compact objects and their host supernova remnants

Martin G. F. Mayer, Werner Becker

Summary: The study aims to systematically investigate the proper motion of all known central compact objects (CCOs), presenting new measurements for six CCOs. It also analyzes the expansion of three supernova remnants (SNRs) and confirms rapid expansion in one particular SNR, emphasizing the importance of an inhomogeneous circumstellar medium to explain its asymmetric appearance. A constraining upper limit of the system's age is obtained by combining expansion measurements with proper motion measurements for another SNR.

ASTRONOMY & ASTROPHYSICS (2021)

Add to Collection

Article Engineering, Aerospace

X-ray study of high Galactic latitude supernova remnant DA 530 with Suzaku

Cihad Deniz, Aytap Sezer, Hicran Bakis, Nergis C. Raycheva

Summary: DA 530 is a high Galactic latitude SNR located in a low-density medium with extremely faint X-ray emission. Analysis of archival Suzaku data revealed that the SE region spectrum can be well described by a single thermal model or a combination of thermal and nonthermal models, supporting the pulsar wind nebula scenario. The SNR is confirmed to be young, expanding in a low-density environment, and has a low X-ray-emitting mass.

ADVANCES IN SPACE RESEARCH (2022)

Add to Collection

Article Multidisciplinary Sciences

Peta-electron volt gamma-ray emission from the Crab Nebula The LHAASO Collaboration

Zhen Cao, F. Aharonian, Q. An, Axikegu, L. X. Bai, Y. X. Bai, Y. W. Bao, D. Bastieri, X. J. Bi, Y. J. Bi, H. Cai, J. T. Cai, Zhe Cao, J. Chang, J. F. Chang, B. M. Chen, E. S. Chen, J. Chen, Liang Chen, View Orcid ProfileLiang Chen, Long Chen, M. J. Chen, M. L. Chen, Q. H. Chen, S. H. Chen, S. Z. Chen, T. L. Chen, X. L. Chen, Y. Chen, N. Cheng, Y. D. Cheng, S. W. Cui, X. H. Cui, Y. D. Cui, B. D'Ettorre Piazzoli, B. Z. Dai, H. L. Dai, Z. G. Dai, Danzengluobu, D. della Volpe, X. J. Dong, K. K. Duan, J. H. Fan, Y. Z. Fan, Z. X. Fan, J. Fang, K. Fang, C. F. Feng, L. Feng, S. H. Feng, Y. L. Feng, B. Gao, C. D. Gao, L. Q. Gao, Q. Gao, W. Gao, M. M. Ge, L. S. Geng, G. H. Gong, Q. B. Gou, M. H. Gu, F. L. Guo, J. G. Guo, X. L. Guo, Y. Q. Guo, Y. Y. Guo, Y. A. Han, H. H. He, H. N. He, J. C. He, S. L. He, X. B. He, Y. He, M. Heller, Y. K. Hor, C. Hou, X. Hou, H. B. Hu, S. Hu, S. C. Hu, X. J. Hu, D. H. Huang, Q. L. Huang, W. H. Huang, X. T. Huang, X. Y. Huang, Z. C. Huang, F. Ji, X. L. Ji, H. Y. Jia, K. Jiang, Z. J. Jiang, C. Jin, T. Ke, D. Kuleshov, K. Levochkin, B. B. Li, Cheng Li, Cong Li, F. Li, H. B. Li, H. C. Li, H. Y. Li, Jian Li, Jie Li, K. Li, W. L. Li, X. R. Li, Xin Li, Xin Li, Y. Li, Y. Z. Li, Zhe Li, Zhuo Li, E. W. Liang, Y. F. Liang, S. J. Lin, B. Liu, C. Liu, D. Liu, H. Liu, H. D. Liu, J. Liu, J. L. Liu, J. S. Liu, J. Y. Liu, M. Y. Liu, R. Y. Liu, S. M. Liu, W. Liu, Y. Liu, Y. N. Liu, Z. X. Liu, W. J. Long, R. Lu, H. K. Lv, B. Q. Ma, L. L. Ma, X. H. Ma, J. R. Mao, A. Masood, Z. Min, W. Mitthumsiri, T. Montaruli, Y. C. Nan, B. Y. Pang, P. Pattarakijwanich, Z. Y. Pei, M. Y. Qi, Y. Q. Qi, B. Q. Qiao, J. J. Qin, D. Ruffolo, V Rulev, A. Saiz, L. Shao, O. Shchegolev, X. D. Sheng, J. Y. Shi, H. C. Song, Yu Stenkin, V Stepanov, Y. Su, Q. N. Sun, X. N. Sun, Z. B. Sun, P. H. T. Tam, Z. B. Tang, W. W. Tian, B. D. Wang, C. Wang, H. Wang, H. G. Wang, J. C. Wang, J. S. Wang, L. P. Wang, L. Y. Wang, R. N. Wang, Wei Wang, View Orcid ProfileWei Wang, X. G. Wang, X. J. Wang, X. Y. Wang, Y. Wang, Y. D. Wang, Y. J. Wang, Y. P. Wang, Z. H. Wang, Z. X. Wang, Zhen Wang, Zheng Wang, D. M. Wei, J. J. Wei, Y. J. Wei, T. Wen, C. Y. Wu, H. R. Wu, S. Wu, W. X. Wu, X. F. Wu, S. Q. Xi, J. Xia, J. J. Xia, G. M. Xiang, D. X. Xiao, G. Xiao, H. B. Xiao, G. G. Xin, Y. L. Xin, Y. Xing, D. L. Xu, R. X. Xu, L. Xue, D. H. Yan, J. Z. Yan, C. W. Yang, F. F. Yang, J. Y. Yang, L. L. Yang, M. J. Yang, R. Z. Yang, S. B. Yang, Y. H. Yao, Z. G. Yao, Y. M. Ye, L. Q. Yin, N. Yin, X. H. You, Z. Y. You, Y. H. Yu, Q. Yuan, H. D. Zeng, T. X. Zeng, W. Zeng, Z. K. Zeng, M. Zha, X. X. Zhai, B. B. Zhang, H. M. Zhang, H. Y. Zhang, J. L. Zhang, J. W. Zhang, L. X. Zhang, Li Zhang, Lu Zhang, P. F. Zhang, P. P. Zhang, R. Zhang, S. R. Zhang, S. S. Zhang, X. Zhang, X. P. Zhang, Y. F. Zhang, Y. L. Zhang, Yi Zhang, Yong Zhang, B. Zhao, J. Zhao, L. Zhao, L. Z. Zhao, S. P. Zhao, F. Zheng, Y. Zheng, B. Zhou, H. Zhou, J. N. Zhou, P. Zhou, R. Zhou, X. X. Zhou, C. G. Zhu, F. R. Zhu, H. Zhu, K. J. Zhu, X. Zuo

Summary: Gamma rays from the Crab Nebula source were detected with ultrahigh energies, indicating the presence of a pevatron electron accelerator with acceleration exceeding 15% of the theoretical limit. The production rate of peta-electron volt electrons and their potential contribution to the highest-energy gamma rays were also discussed in the study, shedding light on cosmic ray acceleration mechanisms.

SCIENCE (2021)

Add to Collection

Article Astronomy & Astrophysics

HESS J1858+020: A GeV-TeV source possibly powered by cosmic rays from SNR G35.6-0.4

Y. Cui, Y. Xin, S. Liu, P. H. T. Tam, G. Puehlhofer, H. Zhu

Summary: Through Fermi-LAT analysis and hadronic modeling, the study investigates the association between SNR cosmic rays and clouds, identifying a hard GeV source spatially coincident with HESS J1858+020 and a molecular cloud complex, as well as a soft GeV source at the northern edge of the SNR. The findings suggest a connection between the GeV and TeV emission at HESS J1858+020, supporting the argument for a middle-aged SNR with a lower diffusion coefficient.

ASTRONOMY & ASTROPHYSICS (2021)

Add to Collection

Article Astronomy & Astrophysics

Three-dimensional magnetohydrodynamic studies of the non-thermal X-ray morphologies of SN 1006

Huan Yu, Jun Fang, Peng Fei Zhang, Li Zhang

ASTRONOMY & ASTROPHYSICS (2015)

Add to Collection

Article Astronomy & Astrophysics

Three-dimensional magnetohydrodynamic studies of the non-thermal X-ray morphologies of SN 1006

Huan Yu, Jun Fang, Peng Fei Zhang, Li Zhang

ASTRONOMY & ASTROPHYSICS (2015)

Add to Collection

Article Astronomy & Astrophysics

Numerically modelling the Cygnus Loop as a remnant evolved in an anisotropic cavity

Jun Fang, Huan Yu, Li Zhang

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2017)

Add to Collection

Article Astronomy & Astrophysics

An explanation of the formation of the peculiar periphery of Tycho's supernova remnant

Jun Fang, Huan Yu, Li Zhang

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2018)

Add to Collection

Article Astronomy & Astrophysics

Multiband nonthermal radiative properties of pulsar wind nebulae

Bo-Tao Zhu, Li Zhang, Jun Fang

ASTRONOMY & ASTROPHYSICS (2018)

Add to Collection

Article Astronomy & Astrophysics

Multiband nonthermal radiative properties of pulsar wind nebulae

Bo-Tao Zhu, Li Zhang, Jun Fang

ASTRONOMY & ASTROPHYSICS (2018)

Add to Collection

Article Astronomy & Astrophysics

The structure of TeV-bright shell-type supernova remnants

Chuyuan Yang, Siming Liu, Jun Fang, Hui Li

ASTRONOMY & ASTROPHYSICS (2015)

Add to Collection

Article Astronomy & Astrophysics

An explanation for the peculiar periphery of supernova remnant G309.2-0.6

Huan Yu, Jun Fang

RESEARCH IN ASTRONOMY AND ASTROPHYSICS (2018)

Add to Collection

Article Astronomy & Astrophysics

Numerically investigating the morphology of the supernova remnant SN 1006 in the ambient medium with a density discontinuity

Jun Fang, Jingwen Yan, Lu Wen, Chunyan Lu, Huan Yu

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2020)

Add to Collection

Article Astronomy & Astrophysics

Investigating the multiband non-thermal emission of the 100 TeV source eHWC J2019+368 with a pulsar wind nebula scenario

Jun Fang, Lu Wen, Huan Yu, Songzhan Chen

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2020)

Add to Collection

Article Astronomy & Astrophysics

Radio and X-ray spectral properties of gamma-ray bursts and pulsar wind nebulae

Bo-Tao Zhu, Fang-Wu Lu, Bing Zhou, Jun Fang, Li Zhang

Summary: This study investigates the radio and X-ray properties of both gamma-ray bursts and pulsar wind nebulae, and finds correlations between the two. The results show that they have the same or similar particle acceleration mechanisms and radiation processes, namely synchrotron radiation.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2022)

Add to Collection

Article Astronomy & Astrophysics

Kinetic simulation of electron, proton and helium acceleration in a non-relativistic quasi-parallel shock

Jun Fang, Qi Xia, Shiting Tian, Liancheng Zhou, Huan Yu

Summary: Non-relativistic quasi-parallel shocks have the potential to accelerate electrons, protons, and helium ions. A 1D particle-in-cell simulation of a non-relativistic quasi-parallel shock with a helium-to-proton number density ratio relevant to Galactic cosmic rays reveals that energetic protons and helium ions can excite waves upstream of the shock, leading to the scattering and gradual acceleration of charged particles. The downstream spectra of charged particles are thermal with a non-thermal tail, and a significant amount of kinetic energy is transferred to non-thermal protons and helium ions.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2022)

Add to Collection

Article Astronomy & Astrophysics

Investigating the radiative properties of LHAASO J1908+0621

Keyao Wu, Liancheng Zhou, Yunlu Gong, Jun Fang

Summary: LHAASO J1908+0621 has been detected as a gamma-ray source emitting energies above 100 TeV, with a break appearing in the gamma-ray spectrum around 1 TeV. The properties of the source have been reanalyzed using 14 years of data from the Fermi-LAT. The results suggest that LHAASO J1908+0621 is associated with a pulsar wind nebula powered by the pulsar PSR J1907+0602, and gamma-rays with energy above 100 TeV are produced by electrons/positrons in the nebula via inverse Compton scattering.

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY (2023)

Add to Collection

Article Astronomy & Astrophysics

A Universal Relation between the Gamma-Ray Luminosity and Power of Relativistic Outflows

Bo-Tao Zhu, Li Zhang, Jun Fang

ASTROPHYSICAL JOURNAL (2019)

Add to Collection

No Data Available

© Peeref 2019-2024. All rights reserved.