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While the available set of Gamma-ray Burst (GRB) data with known redshift is currently limited, a much larger set of GRB data without redshift is available from different instruments. This data includes well-measured prompt gamma-ray flux…

高能天体物理现象 · 物理学 2024-03-25 Tamador Aldowma , Soebur Razzaque

We made statistical analysis of the Fermi GBM and Swift BAT observational material, accumulated over 15 years. We studied how GRB parameters (T$_{90}$ duration, fluence, peak flux) that were observed by only one satellite differ from those…

高能天体物理现象 · 物理学 2023-11-27 Sandor Pinter , Lajos G. Balazs , Zsolt Bagoly , L. Viktor Toth , Istvan I. Racz , Istvan Horvath

Different forms of long gamma-ray bursts (GRBs) Luminosity Functions are considered on the basis of an explicit physical model. The inferred flux distributions are compared with the observed ones from two samples of GRBs, Swift and Fermi…

高能天体物理现象 · 物理学 2021-11-17 Shreya Banerjee , David Eichler , Dafne Guetta

In this paper, we present the development and the results of a new search pipeline for short gamma-ray bursts (sGRBs) in the publicly available data from the Gamma-Ray Burst Monitor (GBM) on board the Fermi satellite. This pipeline uses…

高能天体物理现象 · 物理学 2025-10-21 Ariel Perera , Barak Zackay , Tejaswi Venumadhav

Gamma-ray bursts (GRBs) detected at high redshift can be used to trace the Hubble diagram of the Universe. However, the distance calibration of GRBs is not as easily as that of type Ia supernovae (SNe Ia). For the calibrating method based…

宇宙学与河外天体物理 · 物理学 2021-11-23 Li Tang , Xin Li , Hai-Nan Lin , Liang Liu

The classification of Gamma-Ray Bursts has long been an unresolved problem. Early long and short burst classification based on duration is not convincing due to the significant overlap in duration plot, which leads to different views on the…

高能天体物理现象 · 物理学 2024-12-10 Jia-Ming Chen , Ke-Rui Zhu , Zhao-Yang Peng , Li Zhang

We present a new particle tracking software algorithm designed to accurately track the motion of low-contrast particles against a background with large variations in light levels. The method is based on a polynomial fit of the intensity…

软凝聚态物质 · 物理学 2009-11-13 Salman S. Rogers , Thomas A. Waigh , Xiubo Zhao , Jian R. Lu

The accurate spatial location of gamma-ray bursts (GRBs) is crucial for both producing a detector response matrix (DRM) and follow-up observations by other instruments. The Fermi Gamma-ray Burst Monitor (GBM) has the largest field of view…

天体物理仪器与方法 · 物理学 2016-10-25 J. Michael Burgess , Hoi-Fung Yu , Jochen Greiner , Daniel J. Mortlock

In the context of time domain astronomy, we present an offline detection search of gamma-ray transients using a wild binary segmentation analysis called FWBSB targeting both short and long gamma-ray bursts (GRBs) and covering the soft and…

天体物理仪器与方法 · 物理学 2020-02-05 Sarah Antier , Kateryna Barynova , Piotr Fryzlewicz , Cyril Lachaud , Gerard Marchal-Duval

Given the possible repetitive nature of fast radio bursts (FRBs), their cosmological origin, and their high occurrence, detection of strongly lensed sources due to intervening galaxy lenses is possible with forthcoming radio surveys. We…

高能天体物理现象 · 物理学 2017-09-27 Liang Dai , Wenbin Lu

The capability of the Fermi Gamma-ray Burst Monitor (GBM) to localize gamma-ray bursts (GRBs) is evaluated for two different automated algorithms: the GBM Team's RoboBA algorithm and the independently developed BALROG algorithm. Through a…

One of the scientific objectives of NASA's Fermi Gamma-ray Space Telescope is the study of Gamma-Ray Bursts (GRBs). The Fermi Gamma-Ray Burst Monitor (GBM) was designed to detect and localize bursts for the Fermi mission. By means of an…

We propose an iterative scheme for feature-based positioning using a new weighted dissimilarity measure with the goal of reducing the impact of large errors among the measured or modeled features. The weights are computed from the…

机器学习 · 计算机科学 2019-05-31 Caifa Zhou , Andreas Wieser

The jet photosphere has been proposed as the origin for the gamma-ray burst (GRB) prompt emission. In many such models, characteristic features in the spectra appear below the energy range of the $\textit{Fermi}$ GBM detectors, so joint…

高能天体物理现象 · 物理学 2019-07-31 Björn Ahlgren , Josefin Larsson , Vlasta Valan , Daniel Mortlock , Felix Ryde , Asaf Pe'er

This paper discusses the Cosmic Background (CB) dipoles observations in the framework of the Planck mission. Dipoles observations can be used in three ways: (i) It gives a measurement of the peculiar velocity of our Galaxy which is an…

天体物理学 · 物理学 2009-11-07 M. Piat , G. Lagache , J. P. Bernard , M. Giard , J. L. Puget

It has been suggested that the prompt emission in gamma-ray bursts (GRBs) could be described by radiation from the photosphere in a hot fireball. Such models must be tested by directly fitting them to data. In this work we use data from the…

高能天体物理现象 · 物理学 2019-01-30 Björn Ahlgren , Josefin Larsson , Erik Ahlberg , Christoffer Lundman , Felix Ryde , Asaf Pe'er

The discovery and subsequent study of optical counterparts to transient sources is crucial for their complete astrophysical understanding. Various gamma ray burst (GRB) detectors, and more notably the ground--based gravitational wave…

天体物理仪器与方法 · 物理学 2022-09-29 Javed Rana , Akshat Singhal , Bhooshan Gadre , Varun Bhalerao , Sukanta Bose

Directional beamforming is a crucial component for realizing robust wireless communication systems using millimeter wave (mmWave) technology. Beam alignment using brute-force search of the space introduces time overhead while location aided…

信号处理 · 电气工程与系统科学 2021-02-23 Vishnu Raj , Nancy Nayak , Sheetal Kalyani

In this work, we analyze the most recent short gamma-ray burst (sGRB) sample detected by the \emph{Fermi} satellite to reassess the sGRB luminosity function and formation rate. Using the empirical redshift-luminosity correlation, we first…

高能天体物理现象 · 物理学 2025-09-03 Chong-Yu Gao , Jun-Jie Wei , Hou-Dun Zeng

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…