Results 91 to 100 of about 59,762 (195)

GAMCIT: A gamma ray burst detector [PDF]

The origin of celestial gamma ray bursts remains one of the great mysteries of modern astrophysics. The GAMCIT Get-Away-Special payload is designed to provide new and unique data in the search for the sources of gamma ray bursts. GAMCIT consists of three
Grunsfeld, John M., Surka, Derek M., Warneke, Brett A.   +2 more
core   +1 more source

Dark matter: the connection with gamma-ray astrophysics [PDF]

, 2007
We review the status of indirect Dark Matter searches, focusing in particular on the connection with gamma-ray Astrophysics, and on the prospects for detection with the upcoming space telescope GLAST and Air Cherenkov Telescopes such as CANGAROO, HESS, MAGIC and VERITAS.
openaire   +2 more sources

Synchrotron Self-Compton Radiation in the ICMART Model: Spectral Simulations and Application to the Record-breaking GRB 221009A

The Astrophysical Journal
This paper presents simulations of the synchrotron self-Compton (SSC) spectrum within the Internal-Collision-induced Magnetic Reconnection and Turbulence (ICMART) model.
Xueying Shao, He Gao
doaj   +1 more source

Relation between the keV–MeV and TeV Emission of GRB 221009A and Its Implications

The Astrophysical Journal Letters
Gamma-ray bursts (GRBs) are believed to launch relativistic jets, which generate prompt emission by internal processes, and produce long-lasting afterglows by driving external shocks into the surrounding medium.
Yan-Qiu Zhang, Haoxiang Lin, Shao-Lin Xiong, Zhuo Li, Ming-Yu Ge, Chen-Wei Wang, Shu-Xu Yi, Zhen Zhang, Shuang-Nan Zhang, Li-Ming Song, Chao Zheng, Wang-Chen Xue, Jia-Cong Liu, Wen-Jun Tan, Yue Wang, Wen-Long Zhang   +15 more
doaj   +1 more source

Fast-cooling Synchrotron Prompt Emission from Internal Shocks in GRB 241030A

The Astrophysical Journal
We present a time-resolved joint Swift–Fermi spectral study of GRB 241030A ( z = 1.411) that cleanly isolates the synchrotron origin of its prompt emission and favors a matter-dominated internal-shock scenario.
Varun, Bin-Bin Zhang, Xiao-Hong Zhao, Jun Yang, Run-Chao Chen, Vikas Chand   +5 more
doaj   +1 more source

Research in particle and gamma-ray astrophysics [PDF]

Research activities in cosmic rays, gamma rays, and astrophysical plasmas are covered. Each activity is described, followed by a bibliography. The research program is directed toward the investigation of the astrophysical aspects of cosmic rays and gamma
Davis, L., Jr., Mewaldt, R. A., Prince, T. A., Stone, E. C.   +3 more
core   +2 more sources

Gamma rays from extragalactic astrophysical sources

, 2011
10 pages, 2 figures, proceedings of the IX Scientific Meeting of the Spanish Astronomical Society held on September 13--17, 2010, in Madrid, Spain. M. R. Zapatero Osorio et al. (eds.)
openaire   +2 more sources

Generation of Large-scale Magnetic Fields Upstream of Gamma-Ray Burst Afterglow Shocks

The Astrophysical Journal
The origins of the magnetic fields that power gamma-ray burst (GRB) afterglow emission are not fully understood. One possible channel for generating these fields involves the pre-conditioning of the circumburst medium: in the early afterglow phase ...
Ryan Golant, Arno Vanthieghem, Daniel Grošelj, Lorenzo Sironi   +3 more
doaj   +1 more source

Gamma-ray lines in modern astrophysics

, 2019
6 pages in proceedings of the 12th INTEGRAL Conference, Geneva, Switzerland, Feb 11-15th ...
openaire   +2 more sources

Discovery of VHE gamma-rays from the vicinity of the shell-type SNR G318.2+0.1 with H.E.S.S

, 2010
The on-going H.E.S.S. Galactic Plane Survey continues to reveal new sources of VHE gamma-rays. In particular, recent re-observations of the region around the shell-type supernova remnant (SNR) G318.2+0.1 have resulted in the discovery of statistically ...
Chaves, R., de Ona Wilhelmi, E., Fiasson, A., for the H.E.S.S. Collaboration, Hofverberg, P., Kosack, K., Mehault, J.   +6 more
core   +1 more source