Multiwavelength Observations of GRB 050820A: An Exceptionally Energetic Event Followed from Start to Finish

@article{Cenko2006MultiwavelengthOO,
  title={Multiwavelength Observations of GRB 050820A: An Exceptionally Energetic Event Followed from Start to Finish},
  author={S. Bradley Cenko and Mansi M. Kasliwal and Fiona A. Harrison and Valentin D. Pal'shin and Dale A. Frail and P. Brian Cameron and Edo Berger and Derek B. Fox and Avishay Gal-yam and Shrinivas R. Kulkarni and Dae-Sik moon and Ehud Nakar and Eran. O. Ofek and Bryan Edward Penprase and Paul A. Price and Re’em Sari and Brian P. Schmidt and Alicia Margarita Soderberg and R. L. Aptekar' and Dmitry D. Frederiks and Sergey Golenetskii and David N. Burrows and Roger A. Chevalier and N. C. Gehrels and Patrick McCarthy and J A Nousek and Tsvi Piran},
  journal={The Astrophysical Journal},
  year={2006},
  volume={652},
  pages={490 - 506}
}
We present observations of the unusually bright and long γ-ray burst GRB 050820A, one of the best sampled broadband data sets in the Swift era. The γ-ray light curve is marked by a soft precursor pulse some 200 s before the main event; the lack of any intervening emission suggests that it is due to a physical mechanism distinct from the GRB itself. The large time lag between the precursor and the main emission enabled simultaneous observations in the γ-ray, X-ray, and optical bandpasses… 

GRB 061121: Broadband Spectral Evolution through the Prompt and Afterglow Phases of a Bright Burst

Swift triggered on a precursor to the main burst of GRB 061121 (z = 1.314), allowing observations to be made from the optical to gamma-ray bands. Many other telescopes, including Konus-Wind,

GRB 070311: a direct link between the prompt emission and the afterglow

Context. The prompt emission of gamma-ray bursts is mostly thought to be produced in internal shocks of relativistic shells emitted by the progenitor at different times, whereas the late multi-band

PANCHROMATIC OBSERVATIONS OF THE TEXTBOOK GRB 110205A: CONSTRAINING PHYSICAL MECHANISMS OF PROMPT EMISSION AND AFTERGLOW

We present a comprehensive analysis of a bright, long-duration (T90 ∼ 257 s) GRB 110205A at redshift z = 2.22. The optical prompt emission was detected by Swift/UVOT, ROTSE-IIIb, and BOOTES

GRB 090727 AND GAMMA-RAY BURSTS WITH EARLY-TIME OPTICAL EMISSION

We present a multi-wavelength analysis of Swift gamma-ray burst GRB 090727, for which optical emission was detected during the prompt gamma-ray emission by the 2 m autonomous robotic Liverpool

A faint optical flash in dust-obscured GRB 080603A: implications for GRB prompt emission mechanisms

A faint optical flash is detected by the 2-m Faulkes Telescope North simultaneously with the second of two prompt γ-ray pulses in INTEGRAL gamma-ray burst (GRB) 080603A, and it is suggested that the optical flash could originate from the inhomogeneity of the relativistic flow.

A Comprehensive Study of GRB 070125, A Most Energetic Gamma-Ray Burst

We present a comprehensive multiwavelength analysis of the bright, long-duration gamma-ray burst GRB 070125, comprised of observations in gamma-ray, X-ray, optical, millimeter, and centimeter wave

OBSERVATIONS OF THE NAKED-EYE GRB 080319B: IMPLICATIONS OF NATURE'S BRIGHTEST EXPLOSION

The first gamma-ray burst (GRB) confirmed to be bright enough to be seen with the naked eye, GRB 080319B at redshift z = 0.937, allowed for exquisite follow-up observations across the electromagnetic

THE COLLIMATION AND ENERGETICS OF THE BRIGHTEST SWIFT GAMMA-RAY BURSTS

Long-duration gamma-ray bursts (GRBs) are widely believed to be highly collimated explosions (bipolar conical outflows with half-opening angle θ≈ 1°–10°). As a result of this beaming factor, the true

Precursors in Swift Gamma Ray Bursts with Redshift

We study a sample of gamma-ray bursts detected by the Swift satellite with known redshift which show a precursor in the Swift BAT light curve. We analyze the spectra of the precursors and compare

A unified picture for the γ‐ray and prompt optical emissions of GRB 990123

The prompt optical emission of GRB 990123 was uncorrelated to the γ-ray light curve and exhibited temporal properties similar to those of the steeply decaying, early X-ray emission observed by Swift
...

References

SHOWING 1-10 OF 86 REFERENCES

Panchromatic study of GRB 060124: From precursor to afterglow

We present observations of GRB 060124, the first event for which both the prompt and the afterglow emission could be observed simultaneously and in their entirety by the three Swift instruments.

The Early X-Ray Emission from GRBs

Observations of the early X-ray emission for a sample of 40 gamma-ray bursts obtained using the Swift satellite, for which the narrow-field instruments were pointed at the burst within 10 minutes of the trigger, show that theX-ray light curve can be well described by an exponential that relaxes into a power law.

Prompt and Delayed Emission Properties of Gamma-Ray Bursts Observed with BeppoSAX

We investigated the spectral evolution in the 2-700 keV energy band of gamma-ray bursts (GRBs) detected by the Gamma-Ray Burst Monitor (GRBM) and localized with the Wide Field Cameras (WFCs) aboard

Swift Observations of the X-Ray-Bright GRB 050315

Swift observations of the � -ray burst GRB 050315 from 80 s to 10 days after the onset of the burst suggest that the rapidly decaying, early X-ray emission was simply a continuation of the fading prompt prompt emission; this strongsimilarity to that of the prompt hard X-rays/� -ray emission is suggested.

Observations of GRB 990123 by the Compton Gamma Ray Observatory

GRB 990123 was the first burst from which simultaneous optical, X-ray, and gamma-ray emission was detected; its afterglow has been followed by an extensive set of radio, optical, and X-ray

Observation of contemporaneous optical radiation from a γ-ray burst

The origin of γ-ray bursts (GRBs) has been enigmatic since their discovery. The situation improved dramatically in 1997, when the rapid availability of precise coordinates, for the bursts allowed the

GRB 050408: A Bright Gamma-Ray Burst Probing an Atypical Galactic Environment

The bright GRB 050408 was localized by HETE-2 near local midnight in the Western Hemisphere, enabling an impressive ground-based follow-up effort, as well as space-based follow-up from Swift. The

The radio afterglow from the γ-ray burst of 8 May 1997

Important insight into the nature of γ-ray bursts (GRBs) has been gained in recent months mainly due to the immediate, precise localization of the bursts and the discovery of relatively long-lived

Discovery of a Radio Flare from GRB 990123

We report the discovery of a radio counterpart to GRB 990123. In contrast to previous well-studied radio afterglows that rise to peak flux on a timescale of a week and then decay over several weeks

The Anomalous Early Afterglow of GRB 050801

The ROTSE-IIIc telescope at the HESS site, Namibia, obtained the earliest detection of optical emission from a gamma-ray burst (GRB), beginning only 21.8 s from the onset of Swift GRB 050801. The
...