Results 41 to 50 of about 196,721 (333)

A kilonova following a long-duration gamma-ray burst at 350 Mpc [PDF]

Nature, 2022
Gamma-ray bursts (GRBs) are divided into two populations1,2; long GRBs that derive from the core collapse of massive stars (for example, ref. 3) and short GRBs that form in the merger of two compact objects4,5.
J. Rastinejad, B. Gompertz, A. Levan, W. Fong, M. Nicholl, G. Lamb, D. Malesani, A. Nugent, S. Oates, N. Tanvir, A. de Ugarte Postigo, C. Kilpatrick, C. Moore, B. Metzger, M. Ravasio, A. Rossi, G. Schroeder, J. Jencson, D. Sand, N. Smith, José Feliciano Agüí Fernández, E. Berger, P. Blanchard, R. Chornock, B. Cobb, M. De Pasquale, J. Fynbo, L. Izzo, D. A. Kann, T. Laskar, E. Marini, K. Paterson, A. R. Escorial, H. Sears, C. Thöne   +34 more
semanticscholar   +1 more source

A Broken “α–intensity” Relation Caused by the Evolving Photosphere Emission and the Nature of the Extraordinarily Bright GRB 230307A

The Astrophysical Journal Letters, 2023
GRB 230307A is one of the brightest gamma-ray bursts detected so far. With the excellent observation of GRB 230307A by the Fermi Gamma-ray Burst Monitor, we can reveal the details of prompt emission evolution.
Yun Wang, Zi-Qing Xia, Tian-Ci Zheng, Jia Ren, Yi-Zhong Fan   +4 more
doaj   +1 more source

Short-Duration Gamma-Ray Bursts [PDF]

, 2013
Gamma-ray bursts (GRBs) display a bimodal duration distribution with a separation between the short- and long-duration bursts at about 2 s. The progenitors of long GRBs have been identified as massive stars based on their association with Type Ic core ...
E. Berger
semanticscholar   +1 more source

A nearby long gamma-ray burst from a merger of compact objects [PDF]

Nature, 2022
Gamma-ray bursts (GRBs) are flashes of high-energy radiation arising from energetic cosmic explosions. Bursts of long (greater than two seconds) duration are produced by the core-collapse of massive stars1, and those of short (less than two seconds ...
E. Troja, Chris L. Fryer, B. O’Connor, G. Ryan, S. Dichiara, A. Kumar, N. Ito, R. Gupta, R. Wollaeger, J. Norris, N. Kawai, N. Butler, A. Aryan, K. Misra, R. Hosokawa, K. Murata, M. Niwano, S. Pandey, A. Kutyrev, H. van Eerten, E. Chase, Y.-D. Hu, M. Caballero-García, A. Castro-Tirado   +23 more
semanticscholar   +1 more source

GRB 221009A: Discovery of an Exceptionally Rare Nearby and Energetic Gamma-Ray Burst

The Astrophysical Journal Letters, 2023
We report the discovery of the unusually bright long-duration gamma-ray burst (GRB), GRB 221009A, as observed by the Neil Gehrels Swift Observatory (Swift), Monitor of All-sky X-ray Image, and Neutron Star Interior Composition Explorer Mission.
Maia A. Williams, Jamie A. Kennea, S. Dichiara, Kohei Kobayashi, Wataru B. Iwakiri, Andrew P. Beardmore, P. A. Evans, Sebastian Heinz, Amy Lien, S. R. Oates, Hitoshi Negoro, S. Bradley Cenko, Douglas J. K. Buisson, Dieter H. Hartmann, Gaurava K. Jaisawal, N. P. M. Kuin, Stephen Lesage, Kim L. Page, Tyler Parsotan, Dheeraj R. Pasham, B. Sbarufatti, Michael H. Siegel, Satoshi Sugita, George Younes, Elena Ambrosi, Zaven Arzoumanian, M. G. Bernardini, S. Campana, Milvia Capalbi, Regina Caputo, Antonino D’Aì, P. D’Avanzo, V. D’Elia, Massimiliano De Pasquale, R. A. J. Eyles-Ferris, Elizabeth Ferrara, Keith C. Gendreau, Jeffrey D. Gropp, Nobuyuki Kawai, Noel Klingler, Sibasish Laha, A. Melandri, Tatehiro Mihara, Michael Moss, Paul O’Brien, Julian P. Osborne, David M. Palmer, Matteo Perri, Motoko Serino, E. Sonbas, Michael Stamatikos, Rhaana Starling, G. Tagliaferri, Aaron Tohuvavohu, Silvia Zane, Houri Ziaeepour   +55 more
doaj   +1 more source

Bulk Lorentz factors of Gamma-Ray Bursts [PDF]

, 2017
Knowledge of the bulk Lorentz factor $\Gamma_{0}$ of GRBs allows us to compute their comoving frame properties shedding light on their physics. Upon collisions with the circumburst matter, the fireball of a GRB starts to decelerate, producing a peak or a
G. Ghirlanda, G. Ghirlanda, F. Nappo, G. Ghisellini, A. Melandri, G. Marcarini, L. Nava, O. Salafia, O. Salafia, S. Campana, R. Salvaterra   +10 more
semanticscholar   +1 more source

A long-duration gamma-ray burst with a peculiar origin [PDF]

Nature, 2022
It is generally believed that long-duration gamma-ray bursts (GRBs) are associated with massive star core collapse1, whereas short-duration GRBs are associated with mergers of compact star binaries2.
J. Yang, Shunke Ai, Binbin Zhang, Bing Zhang, Zibo Liu, X. Wang, Yu-Han Yang, Yi-Han Yin, Ye Li, Houjun Lu   +9 more
semanticscholar   +1 more source

CLOAKED GAMMA-RAY BURSTS [PDF]

The Astrophysical Journal, 2014
accepted for publication in the Astrophysical ...
openaire   +2 more sources

Model Constraints Based on the IceCube Neutrino Nondetection of GRB 221009A

The Astrophysical Journal, 2023
GRB 221009A is a bright gamma-ray burst (GRB) with isotropic energy larger than 10 ^54 erg. Its fairly low redshift makes it a promising candidate for high-energy neutrino detection.
Shunke Ai, He Gao
doaj   +1 more source

SHORT GAMMA-RAY BURSTS FROM THE MERGER OF TWO BLACK HOLES [PDF]

, 2016
Short gamma-ray bursts (GRBs) are explosions of cosmic origins believed to be associated with the merger of two compact objects, either two neutron stars or a neutron star and a black hole (BH).
R. Perna, D. Lazzati, B. Giacomazzo
semanticscholar   +1 more source