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Cited by 283

The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.

Optical and Radio Observations of the Afterglow from GRB 990510: Evidence for a Jet

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Harrison, F. A., Bloom, J. S., Frail, D. A., Sari, R., Kulkarni, S. R., Djorgovski, S. G., Axelrod, T., Mould, J., Schmidt, B. P., Wieringa, M. H., Wark, R. M., Subrahmanyan, R., McConnell, D., McCarthy, P. J., Schaefer, B. E., McMahon, R. G., Markze, R. O., Firth, E., Soffitta, P., Amati, L.·1999·The Astrophysical Journal

Abstract

We present multicolor optical and two-frequency radio observations of the bright BeppoSAX event GRB 990510. Neither the well-sampled optical decay nor the radio observations are consistent with simple spherical afterglow models. The achromatic steepening in the optical band and the early decay of the radio afterglow, which both occur at t ~ 1 day, are evidence for hydrodynamical evolution of the source and can be most easily interpreted by models in which the gamma-ray burst ejecta are collimated in a jet. Employing a simple jet model to explain the observations, we derive a jet opening angle of θ 0 = 0.08( n /1 cm -3 ) 1/8 , reducing the isotropic gamma-ray energy release of 2.9 × 10 53 ergs by a factor of ~300.

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Metadata

Authors
Harrison, F. A., Bloom, J. S., Frail, D. A., Sari, R., Kulkarni, S. R., Djorgovski, S. G., Axelrod, T., Mould, J., Schmidt, B. P., Wieringa, M. H., Wark, R. M., Subrahmanyan, R., McConnell, D., McCarthy, P. J., Schaefer, B. E., McMahon, R. G., Markze, R. O., Firth, E., Soffitta, P., & Amati, L.
Venue
The Astrophysical Journal
Published
1999-10-01
Volume
523
Issue
2
Pages
L121-L124
ISSN
0004-637X (ISSN-L)
OpenAlex
W2061817813
Cited by
283
References
1
FWCI
31.45
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Optical and Radio Observations of the Afterglow from GRB 990510: Evidence for a Jet. https://app.cochat.ai/papers/10.1086/312282
The paper
Harrison, F. A., Bloom, J. S., Frail, D. A., Sari, R., Kulkarni, S. R., Djorgovski, S. G., Axelrod, T., Mould, J., Schmidt, B. P., Wieringa, M. H., Wark, R. M., Subrahmanyan, R., McConnell, D., McCarthy, P. J., Schaefer, B. E., McMahon, R. G., Markze, R. O., Firth, E., Soffitta, P., & Amati, L. (1999). Optical and Radio Observations of the Afterglow from GRB 990510: Evidence for a Jet. The Astrophysical Journal. https://doi.org/10.1086/312282

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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