Short-term effects of gamma ray bursts on Earth
نویسندگان
چکیده
منابع مشابه
Short-Hard Gamma-Ray Bursts
Two types of Gamma-ray bursts (GRBs) are observed: short duration hard spectrum GRBs and long duration soft spectrum GRBs. For many years long GRBs were the focus of intense research while the lack of observational data limited the study of short-hard GRBs (SHBs). In 2005 a breakthrough occurred following the first detections of SHB afterglows, longer wavelength emission that follows the burst ...
متن کاملShort-Duration Gamma-Ray Bursts
Gamma-ray bursts (GRBs) display a bimodal duration distribution, with a separation between the shortand long-duration bursts at about 2 sec. The progenitors of long GRBs have been identified as massive stars based on their association with Type Ic core-collapse supernovae, their exclusive location in starforming galaxies, and their strong correlation with bright ultraviolet regions within their...
متن کاملThe spectra of short Gamma–Ray Bursts
We present the results of the spectral analysis of a sample of short bright γ–ray bursts (GRB) detected by BATSE and compare them with the average and time resolved spectral properties of long bright bursts. While the spectral parameters of short GRBs confirm, as expected from previous works based on the hardness ratio, that they are harder than long events, we find that this difference is main...
متن کاملObservations of short gamma-ray bursts.
We review recent observations of short-hard gamma-ray bursts and their afterglows. The launch and successful ongoing operations of the Swift satellite, along with several localizations from the High-Energy Transient Explorer mission, have provoked a revolution in short-burst studies: first, by quickly providing high-quality positions to observers; and second, via rapid and sustained observation...
متن کاملSpectral Properties of Short Gamma-Ray Bursts
The distribution of GRB durations is bimodal, but there is little additional evidence to support the division of GRBs into short and long classes. Based on simple hardness ratios, several studies have shown a tendency for longer GRBs to have softer energy spectra. Using a database of standard model fits to BATSE GRBs, we compare the distributions of spectral parameters for short and long bursts...
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ژورنال
عنوان ژورنال: Astrophysics and Space Science
سال: 2009
ISSN: 0004-640X,1572-946X
DOI: 10.1007/s10509-009-0037-3