Abstract
Since the discovery of fading X-rays from Gamma-Ray Bursts (GRBs) with BeppoSAX (Piro et al. 1997, Costa et al. 1997), world-wide follow-up observations in optical band have achieved the fruitful results. The case of GRB 970228, there was an optical transient, coincides with the BeppoSAX position and faded (Paradijs et al. 1997, Sahu et al. 1997). These optical observations also confirmed the extended component, which was associated with the optical transient. The new transient are fading with a power-law j function in time and the later observation of HST confirmed the extended emission is stable (Fruchter et al. 1997). This extended object seems to be a distant galaxy and strongly suggests to be the host.
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Murakami, T. et al. (1998). Quick Observations of the Fading X-Rays from Gamma-Ray Bursts with ASCA. In: Koyama, K., Kitamoto, S., Itoh, M. (eds) The Hot Universe. International Astronomical Union / Union Astronomique Internationale, vol 188. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-4970-9_40
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DOI: https://doi.org/10.1007/978-94-011-4970-9_40
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