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Title: Gamma-Ray Emission of the Kes 73/1E 1841-045 Region Observed with the Fermi Large Area Telescope

Abstract

The supernova remnant (SNR) Kes 73 and/or the magnetar 1E 1841-045 at its center can deposit a large amount of energy to the surroundings and is potentially responsible for particle acceleration. Using the data taken with the Fermi Large Area Telescope (LAT), we confirmed the presence of an extended source whose centroid position is highly consistent with this magnetar/SNR pair. Its emission is intense from 100 MeV to >100 GeV. Its LAT spectrum can be decoupled into two components, which are respectively governed by two different mechanisms. According to the young age of this system, the magnetar is seemingly a necessary and sufficient source for the downward-curved spectrum below 10 GeV, as the observed <10 GeV flux is too high for the SNR to account for. On the other hand, the SNR is reasonably responsible for the hard spectrum above 10 GeV. Further studies of this region in the TeV regime is required so that we can perform physically meaningful comparisons of the >10 GeV spectrum and the TeV spectrum.

Authors:
;  [1];  [2];  [3];  [4];  [5]
  1. Institute of Astronomy and Department of Physics, National Tsing Hua University, Hsinchu, Taiwan (China)
  2. Institute of Astronomy and Space Science, Sun Yat-Sen University, Guangzhou 510275 (China)
  3. Department of Astronomy and Space Science, Chungnam National University, Daejeon 305-764 (Korea, Republic of)
  4. School of physics, Huazhong University of Science and Technology, Wuhan 430074 (China)
  5. Department of Physics, University of Hong Kong, Pokfulam Road (Hong Kong)
Publication Date:
OSTI Identifier:
22661319
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 837; Journal Issue: 1; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ACCELERATION; COSMIC GAMMA SOURCES; COSMIC RADIATION; EMISSION; GAMMA RADIATION; GEV RANGE; MEV RANGE; NEUTRON STARS; PULSARS; SPECTRA; SUPERNOVA REMNANTS; TELESCOPES; TEV RANGE

Citation Formats

Yeung, Paul K. H., Kong, Albert K. H., Tam, P. H. Thomas, Hui, C. Y., Takata, Jumpei, and Cheng, K. S., E-mail: paul2012@connect.hku.hk, E-mail: akong@phys.nthu.edu.tw, E-mail: tanbxuan@mail.sysu.edu.cn. Gamma-Ray Emission of the Kes 73/1E 1841-045 Region Observed with the Fermi Large Area Telescope. United States: N. p., 2017. Web. doi:10.3847/1538-4357/AA5DF1.
Yeung, Paul K. H., Kong, Albert K. H., Tam, P. H. Thomas, Hui, C. Y., Takata, Jumpei, & Cheng, K. S., E-mail: paul2012@connect.hku.hk, E-mail: akong@phys.nthu.edu.tw, E-mail: tanbxuan@mail.sysu.edu.cn. Gamma-Ray Emission of the Kes 73/1E 1841-045 Region Observed with the Fermi Large Area Telescope. United States. doi:10.3847/1538-4357/AA5DF1.
Yeung, Paul K. H., Kong, Albert K. H., Tam, P. H. Thomas, Hui, C. Y., Takata, Jumpei, and Cheng, K. S., E-mail: paul2012@connect.hku.hk, E-mail: akong@phys.nthu.edu.tw, E-mail: tanbxuan@mail.sysu.edu.cn. Wed . "Gamma-Ray Emission of the Kes 73/1E 1841-045 Region Observed with the Fermi Large Area Telescope". United States. doi:10.3847/1538-4357/AA5DF1.
@article{osti_22661319,
title = {Gamma-Ray Emission of the Kes 73/1E 1841-045 Region Observed with the Fermi Large Area Telescope},
author = {Yeung, Paul K. H. and Kong, Albert K. H. and Tam, P. H. Thomas and Hui, C. Y. and Takata, Jumpei and Cheng, K. S., E-mail: paul2012@connect.hku.hk, E-mail: akong@phys.nthu.edu.tw, E-mail: tanbxuan@mail.sysu.edu.cn},
abstractNote = {The supernova remnant (SNR) Kes 73 and/or the magnetar 1E 1841-045 at its center can deposit a large amount of energy to the surroundings and is potentially responsible for particle acceleration. Using the data taken with the Fermi Large Area Telescope (LAT), we confirmed the presence of an extended source whose centroid position is highly consistent with this magnetar/SNR pair. Its emission is intense from 100 MeV to >100 GeV. Its LAT spectrum can be decoupled into two components, which are respectively governed by two different mechanisms. According to the young age of this system, the magnetar is seemingly a necessary and sufficient source for the downward-curved spectrum below 10 GeV, as the observed <10 GeV flux is too high for the SNR to account for. On the other hand, the SNR is reasonably responsible for the hard spectrum above 10 GeV. Further studies of this region in the TeV regime is required so that we can perform physically meaningful comparisons of the >10 GeV spectrum and the TeV spectrum.},
doi = {10.3847/1538-4357/AA5DF1},
journal = {Astrophysical Journal},
number = 1,
volume = 837,
place = {United States},
year = {Wed Mar 01 00:00:00 EST 2017},
month = {Wed Mar 01 00:00:00 EST 2017}
}