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Short gamma-ray bursts are expected to be associated with compact object mergers, such as binary neutron star or neutron star-black hole systems, and are key high-energy multimessenger events. The detection of GRB 170817A, coinciding with…

High Energy Astrophysical Phenomena · Physics 2025-07-25 I. F. Giudice , L. Izzo , R. Martone , M. T. Botticella , E. Cappellaro , R. De Rosa , M. Della Valle

We introduce a fusion of GPU accelerated primal heuristics for Mixed Integer Programming. Leveraging GPU acceleration enables exploration of larger search regions and faster iterations. A GPU-accelerated PDLP serves as an approximate LP…

Optimization and Control · Mathematics 2025-10-31 Akif Çördük , Piotr Sielski , Alice Boucher , Kumar Aatish

This study presents a reconstruction of the Gaussian Beam Tracing solution using CUDA, with a particular focus on the utilisation of GPU acceleration as a means of overcoming the performance limitations of traditional CPU algorithms in…

Performance · Computer Science 2025-01-24 Zhang Sheng , Lishu Duan , Hanbo Jiang

Searching for sources of electromagnetic emission in spectral-line radio astronomy interferometric data is a computationally intensive process. Parallel programming techniques and High Performance Computing hardware may be used to improve…

Instrumentation and Methods for Astrophysics · Physics 2015-07-20 Stefan Westerlund , Christopher Harris

The temporal and spectral evolution of gamma-ray burst (GRB) afterglows can be used to infer the density and density profile of the medium through which the shock is propagating. In long-duration (core-collapse) GRBs, the circumstellar…

High Energy Astrophysical Phenomena · Physics 2022-07-06 A. A. Chrimes , B. P. Gompertz , D. A. Kann , A. J. van Marle , J. J. Eldridge , P. J. Groot , T. Laskar , A. J. Levan , M. Nicholl , E. R. Stanway , K. Wiersema

In 2017, the LIGO and Virgo gravitational wave (GW) detectors, in conjunction with electromagnetic (EM) astronomers, observed the first GW multi-messenger astrophysical event, the binary neutron star (BNS) merger GW170817. This marked the…

High Energy Astrophysical Phenomena · Physics 2023-11-20 Geoffrey Mo , Rahul Jayaraman , Michael Fausnaugh , Erik Katsavounidis , George R. Ricker , Roland Vanderspek

In the field of multi-messenger astronomy, Bayesian inference is commonly adopted to compare the compatibility of models given the observed data. However, to describe a physical system like neutron star mergers and their associated…

High Energy Astrophysical Phenomena · Physics 2021-10-01 En-Tzu Lin , Fergus Hayes , Gavin P. Lamb , Ik Siong Heng , Albert K. H. Kong , Michael J. Williams , Surojit Saha , John Veitch

The central engine that powers gamma-ray bursts (GRBs), the most powerful explosions in the universe, is still not identified. Besides hyper-accreting black holes, rapidly spinning and highly magnetized neutron stars, known as millisecond…

Gamma-ray bursts (GRBs), the brightest electromagnetic bursts in the universe, are believed to originate from ultra-relativistic jets launched by the rapidly rotating central engine, either a disk-surrounded newly formed black hole (BH) or…

High Energy Astrophysical Phenomena · Physics 2025-07-02 Tian-Ci Zheng , Stefano Covino , Yun Wang , Xiang-Dong Li , Da-Ming Wei , Zhi-Ping Jin

We describe the design and deployment of GREENBURST, a commensal Fast Radio Burst (FRB) search system at the Green Bank Telescope. GREENBURST uses the dedicated L-band receiver tap to search over the 960$-$1920 MHz frequency range for…

The birth of gravitational-wave / electromagnetic astronomy was heralded by the joint observation of gravitational waves (GWs) from a binary neutron star (BNS) merger by Advanced LIGO and Advanced Virgo, GW170817, and of gamma-rays from the…

Mitigating data gaps in Gamma-ray bursts (GRBs) light curves (LCs) is crucial for cosmological research, enhancing the precision of parameters, assuming perfect satellite conditions for complete LC coverage with no gaps. This analysis…

Coherent WaveBurst is a generic, multidetector gravitational wave burst search based on the excess power approach. The coherent WaveBurst algorithm currently employed in the all-sky short-duration gravitational wave burst search uses a…

General Relativity and Quantum Cosmology · Physics 2022-04-12 Dixeena Lopez , V. Gayathri , Archana Pai , Ik Siong Heng , Chris Messenger , Sagar Kumar Gupta

Gamma-ray bursts (GRBs) are one of the main targets for the observations of the MAGIC telescopes. As a result of the effort in improving the sensitivity of the instrument and the automatic follow-up strategy, MAGIC detected two GRBs in the…

Significant human and observational resources have been dedicated to electromagnetic followup of gravitational-wave events detected by Advanced LIGO and Virgo. As the sensitivity of LIGO and Virgo improves, the rate of sources detected will…

Instrumentation and Methods for Astrophysics · Physics 2020-12-16 Daniel Finstad , Duncan A. Brown

Cusps of superconducting strings can serve as GRB engines. A powerful beamed pulse of electromagnetic radiation from a cusp produces a jet of accelerated particles, whose propagation is terminated by the shock responsible for GRB. A single…

Astrophysics · Physics 2010-11-15 V. Berezinsky , B. Hnatyk , A. Vilenkin

The joint detection of the gravitational wave (GW) event GW170817 and the short-duration gamma-ray burst (SGRB) event GRB 170817A, marked the beginning of GW multi-messenger astronomy and confirmed that binary neutron star mergers are…

High Energy Astrophysical Phenomena · Physics 2024-05-31 Luyanda Mazwi , Soebur Razzaque , Lutendo Nyadzani

Gamma-ray bursts (GRBs), as a possible probe to extend the Hubble diagram to high redshifts, have attracted much attention recently. In this paper, we select two samples of GRBs that have a plateau phase in X-ray afterglow. One is short…

Cosmology and Nongalactic Astrophysics · Physics 2021-08-11 J. P. Hu , F. Y. Wang , Z. G. Dai

We present a robust and efficient methodology for parameter estimation of gravitational waves generated during the post-merger phase of binary neutron star mergers. Our approach leverages an analytic waveform model combined with empirical…

General Relativity and Quantum Cosmology · Physics 2026-01-13 Stamatis Vretinaris , Georgios Vretinaris , Christos Mermigkas , Minas Karamanis , Nikolaos Stergioulas