/ 97 11 06 4 v 1 7 N ov 1 99 7 Is the Fuzziness of GRB 970228 constant ?
نویسندگان
چکیده
Abstract. In view of the data gathered in September 1997, we review the flux values collected so far for the ”fuzziness” seen in the optical counterpart of GRB970228. Comparison between the ground based data collected in March and the data of September 1997 suggests a fading of the fuzz. Given the diversity of the data in hand, the magnitude of the effect and its significance are not easy to quantify. Only new images, both from the ground and with the Space Telescope, directly comparable to the old ones could settle this problem.
منابع مشابه
ar X iv : a st ro - p h / 97 11 26 0 v 1 2 1 N ov 1 99 7 1 The optical light curve of GRB 970228 refined
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متن کاملX iv : a st ro - p h / 97 10 31 3 v 1 2 8 O ct 1 99 7 Did GRB 970228 and GRB 970508 present similar optical properties ?
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متن کاملar X iv : a st ro - p h / 97 10 31 3 v 2 3 1 O ct 1 99 7 Did GRB 970228 and GRB 970508 present similar optical properties ?
The analysis of the light curves of the optical counterparts of GRB 970228 and GRB 970508 points out remarkable similarities. The spectral distribution obtained from the color indices shows that both the transients became bluer during the increasing stage, and redder after the maximum. A main difference concerns the behaviour of the optical fading which is well fitted by a single power law in t...
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