HOW LONG DOES A BURST BURST?

@article{Zhang2014HOWLD,
  title={HOW LONG DOES A BURST BURST?},
  author={Binbin Zhang and Bing Zhang and Kohta Murase and Valerie Connaughton and Michael S. Briggs},
  journal={The Astrophysical Journal},
  year={2014},
  volume={787}
}
Several gamma-ray bursts (GRBs) last much longer (∼hours) in γ-rays than typical long GRBs (∼minutes), and it has recently been proposed that these “ultra-long GRBs” may form a distinct population, probably with a different (e.g., blue supergiant) progenitor than typical GRBs. However, Swift observations suggest that many GRBs have extended central engine activities manifested as flares and internal plateaus in X-rays. We perform a comprehensive study on a large sample of Swift GRBs with X-Ray… 

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References

SHOWING 1-10 OF 51 REFERENCES

ARE ULTRA-LONG GAMMA-RAY BURSTS DIFFERENT?

The discovery of a number of gamma-ray bursts (GRBs) with duration exceeding 1000 s has opened the debate on whether these bursts form a new class of sources, the so-called ultra-long GRBs, or if

A NEW POPULATION OF ULTRA-LONG DURATION GAMMA-RAY BURSTS

We present comprehensive multiwavelength observations of three gamma-ray bursts (GRBs) with durations of several thousand seconds. We demonstrate that these events are extragalactic transients; in

GRB 091024A AND THE NATURE OF ULTRA-LONG GAMMA-RAY BURSTS

We present a broadband study of gamma-ray burst (GRB) 091024A within the context of other ultra-long-duration GRBs. An unusually long burst detected by Konus–Wind (KW), Swift, and Fermi, GRB 091024A

THE ULTRA-LONG GRB 111209A. II. PROMPT TO AFTERGLOW AND AFTERGLOW PROPERTIES

The “ultra-long” gamma-ray burst GRB 111209A at redshift z = 0.677 is the longest GRB ever observed thus far, with a rest frame prompt emission duration of ∼4 hr. In order to explain the burst

BATSE Observations of Gamma-Ray Burst Tails

With the discovery of low-energy radiation appearing to come from the site of gamma-ray bursts in the hours to weeks after the initial burst of gamma rays, it would appear that astronomers have seen

“Late Prompt” Emission in Gamma-Ray Bursts?

The flat decay phase in the first 102-104 s of the X-ray light curve of gamma-ray bursts (GRBs) has not yet been convincingly explained. The fact that the optical and X-ray light curves are often

Extended Power-Law Decays in BATSE Gamma-Ray Bursts: Signatures of External Shocks?

The connection between gamma-ray bursts (GRBs) and their afterglows is currently not well understood. Afterglow models of synchrotron emission generated by external shocks in the GRB fireball model

Flares in Long and Short Gamma-Ray Bursts: A Common Origin in a Hyperaccreting Accretion Disk

Early-time X-ray observations of gamma-ray bursts (GRBs) with the Swift satellite have revealed a more complicated phenomenology than was known before. In particular, the presence of flaring activity

DISCERNING THE PHYSICAL ORIGINS OF COSMOLOGICAL GAMMA-RAY BURSTS BASED ON MULTIPLE OBSERVATIONAL CRITERIA: THE CASES OF z = 6.7 GRB 080913, z = 8.2 GRB 090423, AND SOME SHORT/HARD GRBs

The two high-redshift gamma-ray bursts, GRB 080913 at z = 6.7 and GRB 090423 at z = 8.2, recently detected by Swift appear as intrinsically short, hard GRBs. They could have been recognized by BATSE

BLUE SUPERGIANT MODEL FOR ULTRA-LONG GAMMA-RAY BURST WITH SUPERLUMINOUS-SUPERNOVA-LIKE BUMP

Long gamma-ray bursts (LGRBs) have a typical duration of ∼30 s, and some of them are associated with hypernovae, such as Type Ic SN 1998bw. Wolf–Rayet stars are the most plausible LGRB progenitors,
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