Results 21 to 30 of about 196,721 (333)

Collapsars: Gamma-Ray Bursts and Explosions in “Failed Supernovae” [PDF]

, 1998
Using a two-dimensional hydrodynamics code (PROMETHEUS), we explore the continued evolution of rotating helium stars, Mα ≳ 10 M☉, in which iron-core collapse does not produce a successful outgoing shock but instead forms a black hole of 2-3 M☉. The model
A. MacFadyen, S. Woosley
semanticscholar   +1 more source

Very high-energy gamma-ray emission beyond 10 TeV from GRB 221009A [PDF]

Science Advances, 2023
The highest-energy gamma-rays from gamma-ray bursts (GRBs) have important implications for their radiation mechanism. Here we report the detection of gamma-rays up to 13 teraelectronvolts from the brightest GRB 221009A by the Large High Altitude Air ...
Z. Cao, F. Aharonian, Q. An, Axikegu, Y. Bai, Y. Bao, D. Bastieri, X. Bi, Y. Bi, J. Cai, Q. Cao, W. Cao, Z. Cao, J. Chang, J. Chang, A. M. Chen, E. Chen, Liang Chen, Lin Chen, Long Chen, M. Chen, M. Chen, Q. Chen, S. Chen, S. Z. Chen, T. Chen, Y. Chen, N. Cheng, Y. D. Cheng, M. Cui, S. Cui, X. Cui, Y. Cui, B. Dai, H. Dai, Z. Dai, Danzengluobu, D. D. Volpe, X. Dong, K. Duan, J. Fan, Y. Z. Fan, J. Fang, K. Fang, C. Feng, L. Feng, S. Feng, X. Feng, Y. Feng, S. Gabici, B. Gao, C. Gao, L. Gao, Q. Gao, W. Gao, W. Gao, M. Ge, L. Geng, G. Giacinti, G. Gong, Q. Gou, M. Gu, F. Guo, X. Guo, Y. Q. Guo, Y. Y. Guo, Y. Han, H. He, H. He, J. Y. He, X. He, Y. He, M. Heller, Y. Hor, B. Hou, C. Hou, X. Hou, H. Hu, Q. Hu, S. Hu, D. Huang, T. Q. Huang, W. J. Huang, X. Huang, X. Y. Huang, Y. Huang, Z. Huang, X. Ji, H. Jia, K. Jia, K. Jiang, X. W. Jiang, Z. Jiang, M. Jin, M. Kang, T. Ke, D. Kuleshov, K. Kurinov, B. Li, Cheng Li, Cong Li, D. Li, F. Li, H. Li, H. C. Li, H. Li, J. Li, Jian Li, Jie Li, K. Li, W. Li, X. Li, Xin Li, Y. Li, Zhe Li, Zhuo Li, E. Liang, Y. Liang, S. Lin, B. Liu, C. Liu, D. Liu, H. Liu, H. Liu, J. Liu, J. Liu, J. Liu, M. Y. Liu, R. Liu, S. M. Liu, W. Liu, Y. Liu, Y. Liu, R. Lu, Q. Luo, H. Lv, B. Ma, L. Ma, X. Ma, J. Mao, Z. Min, W. Mitthumsiri, H. Mu, Y. Nan, A. Neronov, Z. Ou, B. Pang, P. Pattarakijwanich, Z. Pei, M. Qi, Y. Qi, B. Qiao, J. Qin, D. Ruffolo, A. S'aiz, D. Semikoz, C. Shao, L. Shao, O. Shchegolev, X. Sheng, F. Shu, H. Song, Y. Stenkin, V. Stepanov, Y. Su, Q. N. Sun, X. N. Sun, Z. Sun, P. Tam, Q. Tang, Z. Tang, W. Tian, C. Wang, C. Wang, G. W. Wang, H. Wang, H. H. Wang, J. C. Wang, K. Wang, L. Wang, L. Y. Wang, P. Wang, R. Wang, Weicang Wang, X. Wang, X. Wang, Y. Wang, Y. Wang, Y. J. Wang, Z. H. Wang, Z. X. Wang, Zhen Wang, Zhenghan Wang, D. Wei, J. Wei, Y. J. Wei, T. Wen, C. Wu, H. Wu, S. Wu, X. F. Wu, Y. Wu, S. Xi, J. Xia, J. Xia, G. Xiang, D. Xiao, G. Xiao, G. Xin, Y. Xin, Y. Xing, Z. Xiong, D. Xu, R. Xu, R. Xu, W. Xu, L. Xue, D. Yan, J. Yan, T. Yan, C. Yang, F. Yang, F. Yang, H. W. Yang, J. Yang, L. L. Yang, M. Yang, R. Yang, S. B. Yang, Y. Yao, Z. Yao, Y. Ye, L. Yin, N. Yin, X. You, Z. You, Y. Yu, Q. Yuan, H. Yue, H. Zeng, T. Zeng, W. Zeng, M. Zha, B. Zhang, F. Zhang, H. M. Zhang, H. Zhang, J. Zhang, L. X. Zhang, Li Zhang, P. Zhang, P. P. Zhang, R. Zhang, S. B. Zhang, S. Zhang, S. Zhang, X. Zhang, X. Zhang, Y. Zhang, Yi. Zhang, Yong Zhang, B. Zhao, J. Zhao, L. Zhao, L. Zhao, S. Zhao, F. Zheng, B. Zhou, H. Zhou, J. Zhou, M. Zhou, P. Zhou, R. Zhou, X. Zhou, C. G. Zhu, F. Zhu, H. Zhu, K. Zhu, X. Zuo   +278 more
semanticscholar   +1 more source

Gamma-Ray Burst Progenitors [PDF]

Space Science Reviews, 2016
We review our current understanding of the progenitors of both long and short duration gamma-ray bursts (GRBs). Constraints can be derived from multiple directions, and we use three distinct strands; i) direct observations of GRBs and their host galaxies, ii) parameters derived from modeling, both via population synthesis and direct numerical ...
Levan, Andrew, Crowther, Paul, de Grijs, Richard, Langer, Norbert, Xu, Dong, Yoon, Sung-Chul   +5 more
openaire   +6 more sources

Off-axis Prompt X-Ray Transients from the Cocoon of Short Gamma-Ray Bursts [PDF]

, 2017
We present the results of numerical simulations of the prompt emission of short-duration gamma-ray bursts. We consider emission from the relativistic jet, the mildly relativistic cocoon, and the non-relativistic shocked ambient material. We find that the
D. Lazzati, D. López-Cámara, M. Cantiello, B. Morsony, R. Perna, Jared C. Workman   +5 more
semanticscholar   +1 more source

The Diversity of Kilonova Emission in Short Gamma-Ray Bursts [PDF]

Astrophysical Journal, 2017
The historic first joint detection of both gravitational-wave and electromagnetic emission from a binary neutron star merger cemented the association between short gamma-ray bursts (SGRBs) and compact object mergers, as well as providing a well-sampled ...
B. Gompertz, A. Levan, N. Tanvir, J. Hjorth, S. Covino, P. Evans, A. Fruchter, C. Gonzalez-Fernandez, Zhiping Jin, J. Lyman, S. Oates, P. O’Brien, K. Wiersema   +12 more
semanticscholar   +1 more source

Gamma-Ray Burst Afterglows [PDF]

Annual Review of Astronomy and Astrophysics, 2000
▪ Abstract  The discovery of counterparts in X-ray and optical to radio wavelengths has revolutionized the study of γ-ray bursts, until recently the most enigmatic of astrophysical phenomena. We now know that γ-ray bursts are the biggest explosions in nature, caused by the ejection of ultrarelativistic matter from a powerful energy source and its ...
van Paradijs, J.A., Kouveliotou, C., Wijers, R.A.M.J.   +2 more
openaire   +2 more sources

Early optical observations of seven gamma-ray bursts in comparison to their gamma X-ray characteristics in the MSU MASTER Global Robotic Telescopes Net

Геодинамика и тектонофизика, 2019
Seven gamma-ray bursts – GRB 130907A, GRB 140311B, GRB 140129B, GRB 160227A, GRB 120404A, GRB 110801A, and GRB 120811C were observed by the MSU MASTER (Mobile Astronomical System of TElescope Robots) Global Network.
V. M. Lipunov, N. V. Tyurina, V. G. Kornilov, E. S. Gorbovskoy, V. V. Vladimirov, A. S. Kuznetzov, P. V. Balanutsa, D. S. Zimnukhov, V. V. Chazov, D. M. Vlasenko, A. G. Tlatov, V. A. Senik, O. A. Ershova, O. A. Gress, N. M. Budnev, S. A. Yazev, O. B. Chvalaev, V. A. Poleshchuk, Yu. V. Ishmuhametova, V. V. Yurkov, A. V. Gabovich, Yu. P. Sergienko, R. Podesta, C. Lopez, F. Podesta, H. Levato, R. R. Lopez, M. Serra-Ricart, N. Lodieu, G. Israelian, L. Suarez-Andrez, D. Buckley   +31 more
doaj   +1 more source

Gamma-ray burst cosmology [PDF]

New Astronomy Reviews, 2015
21 pages, 24 figures, Accepted for publication by New Astronomy ...
Wang, F. Y., Dai, Z. G., Liang, E. W.
openaire   +2 more sources

Black Hole Accretion in Gamma Ray Bursts

Galaxies, 2017
We study the structure and evolution of the hyperaccreting disks and outflows in the gamma ray bursts central engines. The torus around a stellar mass black hole is composed of free nucleons, Helium, electron-positron pairs, and is cooled by neutrino ...
Agnieszka Janiuk, Michal Bejger, Petra Sukova, Szymon Charzynski   +3 more
doaj   +1 more source

GRB 221009A with an Unconventional Precursor: A Typical Two-stage Collapsar Scenario?

The Astrophysical Journal, 2023
As the brightest gamma-ray burst (GRB) ever detected, GRB 221009A may offer a chance that reveals some interesting features that are hidden in those bursts that are not so bright.
Xin-Ying Song, Shuang-Nan Zhang
doaj   +1 more source