<i>Hubble Space Telescope</i>Observations of the Host Galaxy of GRB 970508

Fruchter, A. S.; Pian, E.; Gibbons, R.; Thorsett, S. E.; Ferguson, Henry C.; Petro, L.; Sahu, Kailash C.; Livio, Mario; Caraveo, P. A.; Frontera, F.; Kouveliotou, C.; Macchetto, D.; Palazzi, E.; Pedersen, H.; Tavani, M.; Paradijs, J. van

doi:10.1086/317870

Cited by 42 publications

(39 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Predehl & Schmitt (1995) À0:24 mag. We find that the host galaxy emission is dominated by a very compact core, similar to, for example, the host of GRB 970508 (Fruchter et al 2000). Similar conclusions about the host galaxy properties were also reached by Fruchter et al (2001b) from an independent analysis of these same data.…”

Section: No 1 2003 Observations Of Grb 010222supporting

confidence: 90%

Hubble Space Telescopeand Ground‐based Optical and Ultraviolet Observations of GRB 010222

Galama

Reichart

Brown

et al. 2003

ApJ

View full text Add to dashboard Cite

We report on Hubble Space Telescope (HST) Wide Field Planetary Camera 2 optical and Space Telescope Imaging Spectrograph (STIS) near-ultraviolet MAMA observations and ground-based optical observations of GRB 010222, spanning 15 hr to 71 days. The observations are well described by a relativistic blast wave model with a hard electron energy distribution, p ¼ 1:57 þ0:04 À0:03 , and a jet transition at t Ã ¼ 0:93 þ0:15 À0:06 days. These values are slightly larger than previously found as a result of a correction for the contribution from the host galaxy to the late-time ground-based observations and the larger temporal baseline provided by the HST observations. The host galaxy is found to contain a very compact core (size <0>25), which coincides with the position of the optical transient. The STIS near-ultraviolet MAMA observations allow for an investigation of the extinction properties along the line of sight to GRB 010222. We find that the far-ultraviolet curvature component c 4 is rather large. In combination with the low optical extinction, A V ¼ 0:110 þ0:010 À0:021 mag, when compared with the hydrogen column inferred from X-ray observations, we suggest that this is evidence for dust destruction.

show abstract

Section: No 1 2003 Observations Of Grb 010222supporting

confidence: 90%

Hubble Space Telescopeand Ground‐based Optical and Ultraviolet Observations of GRB 010222

Galama

Reichart

Brown

et al. 2003

ApJ

View full text Add to dashboard Cite

show abstract

“…(31) to derive the expected intensity of the X-ray AG plateau of GRB 980425, see (Pian 1999;Pian et al 2000). The double success in deducing a "normal" GRB equivalent isotropic energy, and the intensity of the X-ray AG, constitutes a very strong support for the alleged association of SN1998bw with (a not exceptional) GRB 980425.…”

Section: Grb 980425 Is Not Exceptionalmentioning

confidence: 99%

On the optical and X-ray afterglows of gamma ray bursts

Dado

Dar

Rújula

2002

A&A

256

View full text Add to dashboard Cite

Abstract. We severely criticize the consuetudinary analysis of the afterglows of gamma-ray bursts (GRBs) in the conical-ejection fireball scenarios. We argue that, instead, recent observations imply that the long-duration GRBs and their afterglows are produced by highly relativistic jets of cannonballs (CBs) emitted in supernova explosions. The CBs are heated by their collision with the supernova shell. The GRB is the boosted surface radiation the CBs emit as they reach the transparent outskirts of the shell. The exiting CBs further decelerate by sweeping up interstellar matter (ISM). The early X-ray afterglow is dominated by thermal bremsstrahlung from the cooling CBs, the optical afterglow by synchrotron radiation from the ISM electrons swept up by the CBs. We show that this model fits simply and remarkably well all the measured optical afterglows of the 15 GRBs with known redshift, including that of GRB 990123, for which unusually prompt data are available. We demonstrate that GRB 980425 was a normal GRB produced by SN1998bw, with standard X-ray and optical afterglows. We find that the very peculiar afterglow of GRB 970508 can be explained if its CBs encountered a significant jump in density as they moved through the ISM. The afterglows of the nearest 8 of the known-redshift GRBs show various degrees of evidence for an association with a supernova akin to SN1998bw. In all other cases such an association, even if present, would have been undetectable with the best current photometric sensitivities. This gives strong support to the proposition that most, maybe all, of the long-duration GRBs are associated with supernovae. Although our emphasis is on optical afterglows, we also provide an excellent description of X-ray afterglows.

show abstract

“…It then started a power-law decline that could be followed for several hundred days , Djorgovski et al 1997, Garcia et al 1998, and eventually flattened off, revealing the presence of a host , Fruchter et al 2000.…”

Section: Solving the Grb Riddlementioning

confidence: 99%

Gamma-Ray Burst Afterglows

Paradijs

Kouveliotou

Wijers

2000

Annu. Rev. Astron. Astrophys.

322

248

View full text Add to dashboard Cite

The discovery of counterparts in X-ray and optical to radio wavelengths has revolutionized the study of γ -ray bursts, until recently the most enigmatic of astrophysical phenomena. We now know that γ -ray bursts are the biggest explosions in nature, caused by the ejection of ultrarelativistic matter from a powerful energy source and its subsequent collision with its environment. We have just begun to uncover a connection between supernovae and γ -ray bursts, and are finally constraining the properties of the ultimate source of γ -ray burst energy. We review here the observations that have led to this breakthrough in the field; we describe the basic theory of the fireball model and discuss the theoretical understanding that has been gained from interpreting the new wealth of data on γ -ray bursts.

show abstract

Hubble Space TelescopeObservations of the Host Galaxy of GRB 970508

Cited by 42 publications

References 38 publications

Hubble Space Telescopeand Ground‐based Optical and Ultraviolet Observations of GRB 010222

Hubble Space Telescopeand Ground‐based Optical and Ultraviolet Observations of GRB 010222

On the optical and X-ray afterglows of gamma ray bursts

Gamma-Ray Burst Afterglows

Contact Info

Product

Resources

About