Photometry and Spectroscopy of the GRB 970508 Optical Counterpart-Reference-Cited by-同舟云学术

Photometry and Spectroscopy of the GRB 970508 Optical Counterpart

Published:1998-02-13 Issue:5353 Volume:279 Page:1011-1014
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Castro-Tirado Alberto J.¹²³⁴⁵,Gorosabel Javier¹²³⁴⁵,Benı́tez Narciso¹²³⁴⁵,Wolf Christian¹²³⁴⁵,Fockenbrock Ralf¹²³⁴⁵,Martı́nez-González Enrique¹²³⁴⁵,Kristen Helmuth¹²³⁴⁵,Broeils Adrick¹²³⁴⁵,Pedersen Holger¹²³⁴⁵,Greiner Jochen¹²³⁴⁵,Costa Enrico¹²³⁴⁵,Feroci Marco¹²³⁴⁵,Piro Luigi¹²³⁴⁵,Frontera Filippo¹²³⁴⁵,Nicastro Luciano¹²³⁴⁵,Palazzi Eliana¹²³⁴⁵,Bartolini Corrado¹²³⁴⁵,Guarnieri Adriano¹²³⁴⁵,Masetti Nicola¹²³⁴⁵,Piccioni Adalberto¹²³⁴⁵,Mignoli Marco¹²³⁴⁵,Wold Magrethe¹²³⁴⁵,Lacy Mark¹²³⁴⁵,Birkle Kurt¹²³⁴⁵,Broadhurst Tom¹²³⁴⁵,Brandt Søren¹²³⁴⁵,Lund Niels¹²³⁴⁵

Affiliation:

1. A. J. Castro-Tirado and J. Gorosabel, Laboratorio de Astrofı́sica Espacial y Fı́sica Fundamental, INTA, Madrid, Spain.

2. N. Benı́tez and E. Martı́nez-González, Instituto de Fı́sica de Cantabria, Santander, Spain.

3. C. Wolf, R. Fockenbrock, K. Birkle, Max-Planck-Institut für Astronomie, Heidelberg, Germany.

4. H. Kristen, A. Broeils, M. Wold, Stockholm Observatory, Saltsjobaden, Sweden.

5. H. Pedersen, Copenhagen University Observatory, Copenhagen, Denmark.

Abstract

An optical transient within the error box of the gamma ray burst GRB 970508 was imaged 4 hours after the event. It displayed a strong ultraviolet excess, and reached maximum brightness 2 days later. The optical spectra did not show any emission lines, and no variations on time scales of minutes were observed for 1 hour during the decline phase. According to the fireball and afterglow models, the intensity should rise monotonically before the observed optical maximum, but the data indicate that another physical mechanism may be responsible for the constant phase seen during the first hours after the burst.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference50 articles.

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