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The Swift Gamma-Ray Burst Explorer, launched on 2004 November 20, is a multiwavelength, autonomous, rapid-slewing observatory for gamma-ray burst (GRB) astronomy. On 2004 December 23, during the activation phase of the mission, the Swift…

Lobster-ISS is an X-ray all-sky monitor experiment selected by ESA two years ago for a Phase A study (now almost completed) for a future flight (2009) aboard the Columbus Exposed Payload Facility of the International Space Station. The main…

Short gamma-ray bursts (SGRBs) observed by {\it Swift} are potentially revealing the first insight into cataclysmic compact object mergers. To ultimately acquire a fundamental understanding of these events requires pan-spectral observations…

宇宙学与河外天体物理 · 物理学 2015-06-04 David Coward , Eric Howell , Tsvi Piran , Giulia Stratta , Marica Branchesi , Omer Bromberg , Bruce Gendre , Ronald Burman , Dafne Guetta

Starting with models for the compact object merger event rate, the short-duration Gamma-ray Burst (sGRB) luminosity function, and the Swift/BAT detector, we calculate the observed Swift sGRB rate and its uncertainty. Our probabilistic sGRB…

高能天体物理现象 · 物理学 2023-05-31 Tzvetelina A. Dimitrova , Nathaniel R. Butler , Srihari Ravi

We present a systematic search for short-duration gamma-ray bursts (GRBs) in the local Universe based on 14 years of observations with the Neil Gehrels Swift Observatory. We cross-correlate the GRB positions with the GLADE catalogue of…

高能天体物理现象 · 物理学 2020-02-12 S. Dichiara , E. Troja , B. O'Connor , F. E. Marshall , P. Beniamini , J. K. Cannizzo , A. Y. Lien , T. Sakamoto

Compact binary system mergers are expected to generate gravitational radiation detectable by ground-based interferometers. A subset of these, the merger of a neutron star with another neutron star or a black hole, are also the most popular…

Gamma-ray bursts (GRBs) are intense, short-lived bursts of gamma-ray radiation observed up to a high redshift ($z \sim 10$) due to their luminosities. Thus, they can serve as cosmological tools to probe the early Universe. However, we need…

Being able to quickly select among gamma-ray bursts (GRBs) seen by the Swift satellite those which are high-z candidates would give ground-based observers a better chance to determine a redshift for such distant GRBs. Information about…

高能天体物理现象 · 物理学 2009-06-25 T. N. Ukwatta , T. Sakamoto , K. S. Dhuga , W. C. Parke , S. D. Barthelmy , N. Gehrels , M. Stamatikos , J. Tueller

Short Gamma-Ray Burst (SGRB) progenitors have long been thought to be coalescing binary systems of two Neutron Stars (NSNS) or a Neutron Star and a Black Hole (NSBH). The August 17$^{\rm th}$, 2017 detection of the GW170817…

高能天体物理现象 · 物理学 2021-07-19 Kentaro Mogushi , Marco Cavaglià , Karelle Siellez

With its rapid-response capability and multiwavelength complement of instruments, the Swift satellite has transformed our physical understanding of gamma-ray bursts (GRBs). Providing high-quality observations of hundreds of bursts, and…

高能天体物理现象 · 物理学 2014-11-20 N. Gehrels , E. Ramirez-Ruiz , D. B. Fox

We introduce a new capability of the Neil Gehrels Swift Observatory, dubbed `continuous commanding,' achieving 10 seconds latency response time on-orbit to unscheduled Target of Opportunity requests. This allows Swift to respond to early…

Gamma rays at rest frame energies as high as 90 GeV have been reported from gamma-ray bursts (GRBs) by the Fermi Large Area Telescope (LAT). There is considerable hope that a confirmed GRB detection will be possible with the upcoming…

We propose a new method for the classification of optically dark gamma-ray bursts (GRBs), based on the X-ray and optical-to-X-ray spectral indices of GRB afterglows, and utilizing the spectral capabilities of Swift. This method depends less…

高能天体物理现象 · 物理学 2010-03-19 A. J. van der Horst , C. Kouveliotou , N. Gehrels , E. Rol , R. A. M. J. Wijers , J. K. Cannizzo , J. Racusin , D. N. Burrows

The Gamma-Ray Monitor (GRM) is a key scientific payload onboard the Space-based Multi-band Variable Object Monitor (SVOM) satellite, designed specifically for the detection and study of gamma-ray bursts (GRBs). Launched into a 625 km…

The first simultaneous detection of a short gamma-ray burst (SGRB) with a gravitational-wave (GW) signal ushered in a new era of multi-messenger astronomy. In order to increase the number of SGRB-GW simultaneous detections, we need full sky…

Very few detections have been made of optical flashes contemporaneous with prompt high-energy emission from a gamma-ray burst (GRB). In this work, we present and analyze light curves of GRB-associated optical flashes and afterglows from the…

高能天体物理现象 · 物理学 2024-06-28 Rahul Jayaraman , Michael Fausnaugh , George R. Ricker , Roland Vanderspek

The gravitational wave GW170817 from a binary neutron star merger and the simultaneous electromagnetic detection of the GRB170817A by Fermi Gamma-Ray Space Telescope, opened a new era in the multi-messenger astronomy. Furthermore, the GRBs…

高能天体物理现象 · 物理学 2024-07-16 Alessandro Drago , Simone Bini , Mariangela Cestelli Guidi , Augusto Marcelli , Valerio Bocci , Emanuele Pace

Since it is not possible to predict when a Gamma-Ray Burst (GRB) will occur or when Active Galactic Nucleus (AGN) flaring activity starts, follow-up/monitoring ground telescopes must be located as uniformly as possible all over the world in…

高能天体物理现象 · 物理学 2015-05-20 T. Sakamoto , C. A. Wallace , D. Donato , N. Gehrels , T. Okajima , T. N. Ukwatta

The Gamma-Ray Burst Monitor (GBM) will significantly augment the science return from the Fermi Observatory in the study of Gamma-Ray Bursts (GRBs). The primary objective of GBM is to extend the energy range over which bursts are observed…

Gamma-ray bursts (GRBs) have been detected up to GeV energies and are predicted by many models to emit in the very high energy (VHE, > 100 GeV) regime too. Detection of such emission would allow us to constrain GRB models. Since its launch,…

天体物理学 · 物理学 2007-10-15 Milagro Collaboration , P. M. Saz Parkinson , B. L. Dingus