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Detections of very-high-energy (VHE; > 100 GeV) photons from Gamma-ray bursts (GRBs) can provide fundamental information on the involved radiative processes, physical composition of the ejecta and acceleration processes. The High Altitude…

High Energy Astrophysical Phenomena · Physics 2019-08-22 Nissim Fraija , M. Magdalena González

We discuss INTEGRAL's capabilities to detect a high redshift population of Gamma-Ray Bursts (GRBs) in comparison to other high-energy missions. Emphasis is done on the study of the relative capabilities of IBIS on board INTEGRAL with…

Astrophysics · Physics 2007-05-23 J. Gorosabel , N. Lund , S. Brandt , N. J. Westergaard , J. M. Castro Cerón , ;

Millilensing of Gamma-Ray Bursts (GRBs) is expected to manifest as multiple emission episodes in a single triggered GRB with similar light-curve patterns and similar spectrum properties. Identifying such lensed GRBs could help improve…

High Energy Astrophysical Phenomena · Physics 2022-05-25 Shi-Jie Lin , An Li , He Gao , Lin Lin , Bin-Bin Zhang , Zi-Ke Liu , Jin-Hang Zou , Zhao Zhang , Huan Zhou , Zheng-Xiang Li , Lin Lan

The Zir\`e experiment onboard NUSES space mission has several science goals, including the measurements of charged particles and light nuclei from few up to hundreds of MeVs, for the study of low-energy cosmic rays, space weather phenomena,…

Instrumentation and Methods for Astrophysics · Physics 2025-09-23 Ritabrata Sarkar

The recent advances in Gravitational-wave astronomy have greatly accelerated the study of Multimessenger astrophysics. There is a need for the development of fast and efficient algorithms to detect non-astrophysical transients and noises…

Signal Processing · Electrical Eng. & Systems 2020-09-28 Rahul Nigam , Amit Mishra , Pranath Reddy

The division of Gamma-ray bursts (GRBs) into different classes, other than the "short" and "long", has been an active field of research. We investigate whether GRBs can be classified based on a broader set of parameters, including prompt…

High Energy Astrophysical Phenomena · Physics 2023-11-28 Shubham Bhardwaj , Maria G. Dainotti , Sachin Venkatesh , Aditya Narendra , Anish Kalsi , Enrico Rinaldi , Agnieszka Pollo

Detection of spectral line in gamma-ray bursts (GRBs) is importance for studying GRB physics, as it provides insights into the composition and physical conditions of the GRB environment. However, progress in detecting X-ray or gamma-ray…

High Energy Astrophysical Phenomena · Physics 2025-04-10 Lu-Yao Jiang , Yun Wang , Yu-Jia Wei , Da-Ming Wei , Xiang Li , Hao-Ning He , Jia Ren , Zhao-Qiang Shen , Zhi-Ping Jin

Gradient-weighted Class Activation Mapping (Grad- CAM), is an example-based explanation method that provides a gradient activation heat map as an explanation for Convolution Neural Network (CNN) models. The drawback of this method is that…

Computer Vision and Pattern Recognition · Computer Science 2022-04-13 Tanmay Chakraborty , Utkarsh Trehan , Khawla Mallat , Jean-Luc Dugelay

With the discovery of gravitational waves (GWs), Active Galactic Nuclei (AGN) disks have emerged as an interesting environment for hosting a fraction of their sources. AGN disks are conducive to forming both long and short Gamma-Ray Bursts…

High Energy Astrophysical Phenomena · Physics 2025-03-07 Hoyoung D. Kang , Rosalba Perna , Davide Lazzati , Yi-Han Wang

Previously we proposed a novel method to inspect the isotropy of the properties of gamma-ray bursts (GRBs) such as their duration, fluences and peak fluxes at various energy bands and different time scales, complementary to existing studies…

High Energy Astrophysical Phenomena · Physics 2019-05-07 Jakub Řípa , Arman Shafieloo

Gamma-ray bursts (GRBs) can be probes of the early universe, but currently, only 26% of GRBs observed by the Neil Gehrels Swift Observatory GRBs have known redshifts ($z$) due to observational limitations. To address this, we estimated the…

Fault detection in power distribution grids is critical for ensuring system reliability and preventing costly outages. Moreover, fault detection methodologies should remain robust to evolving grid topologies caused by factors such as…

Machine Learning · Computer Science 2025-10-07 Burak Karabulut , Carlo Manna , Chris Develder

In this paper, we design Graph Neural Networks (GNNs) with attention mechanisms to tackle an important yet challenging nonlinear regression problem: massive network localization. We first review our previous network localization method…

Machine Learning · Computer Science 2025-04-08 Wenzhong Yan , Feng Yin , Juntao Wang , Geert Leus , Abdelhak M. Zoubir , Yang Tian

Although it is generally assumed that there are two dominant classes of gamma-ray bursts (GRB) with different typical durations, it has been difficult to unambiguously classify GRBs as short or long from summary properties such as duration,…

High Energy Astrophysical Phenomena · Physics 2023-03-15 Charles L. Steinhardt , William J. Mann , Vadim Rusakov , Christian K. Jespersen

We have performed a systematic study of Gamma-Ray Bursts (GRBs), which have various values in the peak energy of the ${\nu}F_{\nu}$ spectrum of the prompt emission, $E_{{\rm peak}}$, observed by \textsl{Swift}/BAT and \textsl{Fermi}/GBM,…

High Energy Astrophysical Phenomena · Physics 2020-02-12 Daisuke Katsukura , Takanori Sakamoto , Makoto S. Tashiro , Yukikatsu Terada

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…

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…

We develop a graph active learning pipeline (GAP) to detect surface water and in-river sediment pixels in satellite images. The active learning approach is applied within the training process to optimally select specific pixels to generate…

Image and Video Processing · Electrical Eng. & Systems 2023-06-21 Bohan Chen , Kevin Miller , Andrea L. Bertozzi , Jon Schwenk

Complex organic molecules (COMs) are observed to be abundant in various astrophysical environments, in particular toward star forming regions they are observed both toward protostellar envelopes as well as shocked regions. Emission spectrum…

Instrumentation and Methods for Astrophysics · Physics 2026-01-14 Nina Kessler , Timea Csengeri , David Cornu , Sylvain Bontemps , Laure Bouscasse

Gravity inversion is the problem of estimating subsurface density distributions from observed gravitational field data. We consider the two-dimensional (2D) case, in which recovering density models from one-dimensional (1D) measurements…