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We study the spectral and energetics properties of 47 long-duration gamma-ray bursts (GRBs) with known redshift, all of them detected by the Swift satellite. Due to the narrow energy range (15-150 keV) of the Swift-BAT detector, the…

天体物理学 · 物理学 2009-11-13 J. I. Cabrera , C. Firmani , V. Avila-Reese , G. Ghirlanda , G. Ghisellini , L. Nava

We calculate durations and spectral paramaters for 218 Swift bursts detected by the BAT instrument between and including GRBs 041220 and 070509, including 77 events with measured redshifts. Incorporating prior knowledge into the spectral…

天体物理学 · 物理学 2009-11-13 Nathaniel R. Butler , Daniel Kocevski , Joshua S. Bloom , Jason L. Curtis

We investigated the dependence of spectral lag on energy band based on 28 bright GRBs detected by the SPI and IBIS/ISGRI instruments on the INTEGRAL observatory. It is found that for simple structured bursts or well separated pulses of…

高能天体物理现象 · 物理学 2013-04-02 P. Minaev , A. Pozanenko , S. Grebenev , S. Molkov

Event cameras output asynchronous events to represent intensity changes with a high temporal resolution, even under extreme lighting conditions. Currently, most of the existing works use a single contrast threshold to estimate the intensity…

计算机视觉与模式识别 · 计算机科学 2020-12-18 Ziwei Wang , Yonhon Ng , Pieter van Goor , Robert Mahony

The power spectrum of cosmic infrared background (CIB) anisotropies is sensitive to the connection between star formation and dark matter halos over the entire cosmic star formation history. Here we develop a model that associates…

宇宙学与河外天体物理 · 物理学 2015-05-30 Cien Shang , Zoltán Haiman , Lloyd Knox , S. Peng Oh

We discuss the suite of STIS calibration programs executed during HST Cycle 30, covering the period 2022 Nov 07 through 2023 Nov 05. For each of the 19 current regular calibration programs, we provide brief descriptions of the objectives,…

天体物理仪器与方法 · 物理学 2026-01-27 D. Welty , R. Bohlin , J. Carlberg , M. Dallas , S. Hernandez , A. Jones , S. Lockwood , S. Medallon , E. Rickman , D. Stapleton , T. Wheeler

The SPectrometer for Internal Conversion Electrons (SPICE) has been commissioned for use in conjunction with the TIGRESS $\gamma$-ray spectrometer at TRIUMF's ISAC-II facility. SPICE features a permanent rare-earth magnetic lens to collect…

SPI-ACS/INTEGRAL is one of the most sensitive orbital gamma-ray detectors in energy range above 80 keV. Since 2002 it registered several thousands of gamma-ray bursts, including the bursts associated with LIGO-Virgo gravitational wave…

高能天体物理现象 · 物理学 2023-08-22 P. Yu. Minaev , A. S. Pozanenko

The IBIS telescope onboard INTEGRAL, the ESA gamma-ray space mission to be launched in 2002, is a soft gamma-ray (20 keV - 10 MeV) device based on a coded aperture imaging system. We describe here basic concepts of coded masks, the imaging…

天体物理学 · 物理学 2007-05-23 A. Goldwurm , P. Goldoni , A. Gros , J. Stephen , L. Foschini , F. Gianotti , L. Natalucci , G. De Cesare , M. Del Santo

In this paper, we investigate the intelligent reflecting surface (IRS)/reconfigurable intelligent surface (RIS)-aided integrated sensing and communication (ISAC) system based on sensing mutual information (MI). Specifically, the base…

信号处理 · 电气工程与系统科学 2025-04-03 Jin Li , Gui Zhou , Tantao Gong , Nan Liu , Rui Zhang

Although Gamma Ray Bursts (GRBs) have been detected for many decades, the lack of knowledge regarding the radiation mechanism that produces the energetic flash of radiation, or prompt emission, from these events has prevented the full use…

高能天体物理现象 · 物理学 2022-02-23 Tyler Parsotan , Davide Lazzati

Test beam studies of ITk pixel sensors and full modules are an essential tool for assessing their performance and operational behavior. In the 2025 test beam campaigns, quad and triplet modules equipped with both pre-production and…

We expect that at least one Gamma-Ray Burst per month will be detected in the field of view of INTEGRAL instruments and localized with an accuracy of a few arcminutes. IBIS (the Imager on board INTEGRAL) will be the most sensitive…

天体物理学 · 物理学 2007-05-23 D. Gotz , S. Mereghetti

We present a preliminary calibration and flight performance of the Long-Slit Imaging Dual Order Spectrograph (LIDOS), a rocket-borne instrument with a large dynamic range in the 900 - 1700A bandpass. The instrument observes UV-bright…

High speed mid-wave infrared (MWIR) photodetectors have important applications in the emerging areas such high-precision frequency comb spectroscopy and light detection and ranging (LIDAR). In this work, we report a high-speed…

This paper studies the active intelligent reflecting surface (IRS)-enabled integrated sensing and communications (ISAC), in which an active IRS is deployed to assist the base station (BS) in serving multiple communication users (CUs) and…

信息论 · 计算机科学 2025-08-04 Yuan Fang , Xianxin Song , Huazhou Hou , Ziguo Zhong , Xianghao Yu , Jie Xu , Yongming Huang

In this paper, we report all results obtained with a fiber scrambler on the Hamilton spectrograph at Lick Observatory. We demonstrate an improvement in the stability of the instrumental profile using this fiber scrambler. Additionally, we…

天体物理仪器与方法 · 物理学 2015-06-15 Julien F. P. Spronck , Debra A. Fischer , Zachary A. Kaplan , Christian Schwab , Andrew Szymkowiak

In the late afternoon of November 25, 2002 a gamma-ray burst (GRB) was detected in the partially coded field of view (about 7.3 deg from the centre) of the imager IBIS on board the INTEGRAL satellite. The instruments on-board INTEGRAL…

Integral Field Spectroscopy (IFS) is a technique that gives simultaneously the spectrum of each spatial sampling element in a given object field. It is a powerful tool which rearranges the data cube (x, y, lambda) represented by two spatial…

天体物理仪器与方法 · 物理学 2016-12-07 Florence Laurent , Francois Henault

The following paper introduces Dual beam-similarity awaRe Integrated sensing and communications (ISAC) with controlled Peak-to-average power ratio (DRIP) waveforms. DRIP is a novel family of space-time ISAC waveforms designed for dynamic…

信号处理 · 电气工程与系统科学 2026-05-19 Dexin Wang , Ahmad Bazzi , Marwa Chafii