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相关论文: How Temporal Symmetry Defines Morphology in BATSE …

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The prompt phase X- and $\gamma$-ray light curves of gamma-ray bursts (GRBs) exhibit erratic and complex behaviour, often with multiple pulses. The temporal shape of individual pulses is often modelled as 'fast rise exponential decay'…

高能天体物理现象 · 物理学 2025-07-14 A Gowri , A. Pe'er , F. Ryde , H. Dereli-Bégué

A simple test for time-asymmetry is devised and carried out on the brightest gamma-ray bursts detected by the Burst and Transient Source Experiment (BATSE) on board the {\it Compton} Gamma Ray Observatory. We show evidence that individual…

天体物理学 · 物理学 2009-10-22 R. J. Nemiroff , J. P. Norris , C. Kouveliotou , G. J. Fishman , C. A. Meegan , W. S. Paciesas

Tremendous information is hidden in the light curve of a gamma-ray burst (GRB). Based on CGRO/BATSE data, Hakkila (2021) found a majority of GRBs can be characterized by a smooth, single-peaked component superposed with a temporally…

高能天体物理现象 · 物理学 2023-07-25 Dong-Jie Liu , Yuan-Chuan Zou

Gamma-ray bursts (GRBs) are highly variable and exhibit strong spectral evolution. In particular, the emission properties vary from pulse to pulse in multipulse bursts. Here we present a time-resolved Bayesian spectral analysis of a…

高能天体物理现象 · 物理学 2021-12-20 Liang Li , Felix Ryde , Asaf Pe'er , Hoi-Fung Yu , Zeynep Acuner

The average peak-aligned profile of all bursts detected by BATSE with sufficient data quality has a simple ``stretched'' exponential shape, F ~ exp[-(t/t_0)^{1/3}], where $t$ is the time measured from the time for the peak flux of the…

天体物理学 · 物理学 2007-05-23 Boris Stern , Roland Svensson , Juri Poutanen

A study of a set of well-isolated pulses in Long and Intermediate gamma ray burst light curves indicates that simple pulse models having smooth and monotonic pulse rise and decay regions are inadequate. Examining the residuals of fits of…

高能天体物理现象 · 物理学 2015-06-18 Jon Hakkila , Robert D. Preece

A comprehensive temporal analysis has been performed on the 319 brightest GRBs with T90>2s from the BATSE current catalog. The rise times, fall times, full-widths at half maximum (FWHM), pulse amplitudes and pulse areas were measured and…

天体物理学 · 物理学 2009-11-07 F. Quilligan , B. McBreen , L. Hanlon , S. McBreen , K. J. Hurley , D. Watson

We observe strong correlations between the temporal properties of gamma ray bursts (GRBs) and their apparent peak brightness. The strongest effect (with a significance level of 10^{-6}) is the difference between the brightness distributions…

天体物理学 · 物理学 2011-07-13 Boris Stern , Juri Poutanen , Roland Svensson

Gamma-ray bursts (GRBs) come in two types, short and long. The distribution of logarithmic durations of long GRBs is asymmetric rather than Gaussian. Such an asymmetry, when modelled with a mixture of Gaussian distributions, requires an…

高能天体物理现象 · 物理学 2021-08-11 Mariusz Tarnopolski

Currently, the best available probe of the early phase of gamma-ray burst (GRB) jet attributes is the prompt gamma-ray emission, in which several intrinsic and extrinsic variables determine GRB pulse evolution. Bright, usually complex…

天体物理学 · 物理学 2009-11-10 J. P. Norris , J. T. Bonnell , D. Kazanas , J. D. Scargle , J. Hakkila , T. W. Giblin

We have investigated the bimodal distribution of the duration of BATSE gamma-ray bursts (GRBs) by analyzing light curves of 64 ms time resolution. We define the average pulse width of GRBs from the auto-correlation function of GRB profiles.…

天体物理学 · 物理学 2007-05-23 Wenfei Yu , Tipei Li , Mei Wu

We demonstrate that the `smoke' of limited instrumental sensitivity smears out structure in gamma-ray burst (GRB) pulse light curves, giving each a triple-peaked appearance at moderate signal-to-noise and a simple monotonic appearance at…

高能天体物理现象 · 物理学 2018-08-22 Jon Hakkila , Stephen Lesage , Stanley McAfee , Eric Hofesmann , Corinne Maly Taylor , Thomas Cannon

Brightness dependent correlations have been conclusively detected in the average time profiles of gamma-ray bursts (GRBs). Determining the time constants of the stretched exponential slopes of the average peak-aligned time profile of GRBs…

天体物理学 · 物理学 2009-10-30 Boris Stern , Juri Poutanen , Roland Svensson

In this paper, we study a sample of 65 short duration bursts contained in the 3B catalogue. We fit the time profiles of these GRBs with lognormal functions and study various temporal properties. In most of the multi-peaked bursts, our…

天体物理学 · 物理学 2007-05-23 Varsha Gupta , Patrick Das Gupta , P. N. Bhat

We analyze pulse properties of Short gamma-ray bursts (GRBs) from a new catalog containing 434 pulses from 387 BATSE Time-Tagged Event (TTE) GRBs. Short GRB pulses exhibit correlated properties of duration, fluence, hardness, and amplitude,…

高能天体物理现象 · 物理学 2018-03-28 Jon Hakkila , Istvan Horvath , Eric Hofesmann , Stephen Lesage

The discovery (Liang & Kargatis 1996), that the peak energy of time-resolved spectra of gamma-ray burst (GRB) pulses decays exponentially with fluence, is analytically shown to imply that the time-integrated photon number spectrum of a…

天体物理学 · 物理学 2009-10-30 Felix Ryde , Roland Svensson

We present the time integrated and time resolved spectral analysis of a sample of bright bursts selected from the BATSE archive. We fitted four different spectral models to the time integrated and time resolved spectra of the flux pulses.…

天体物理学 · 物理学 2009-11-07 G. Ghirlanda , A. Celotti , G. Ghisellini

A simple scheme delineates Long GRBs with similar time histories using the Internal Luminosity Function power-law index and the spectral lag. Several generalizations are made about time history morphologies: 1) GRBs with long spectral lags…

天体物理学 · 物理学 2008-11-26 Jon Hakkila , Timothy W. Giblin

A temporal analysis has been performed on a sample of 100 bright gamma-ray bursts (GRBs) with T90<2s from the BATSE current catalog. The GRBs were denoised using a median filter and subjected to an automated pulse selection algorithm as an…

天体物理学 · 物理学 2009-11-07 S. McBreen , F. Quilligan , B. McBreen , L. Hanlon , D. Watson

We demonstrate that distinguishable gamma-ray burst pulses exhibit similar behaviors as evidenced by correlations among the observable pulse properties of duration, peak luminosity, fluence, spectral hardness, energy-dependent lag, and…

高能天体物理现象 · 物理学 2015-05-27 Jon Hakkila , Robert D. Preece
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