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SDSS J124602.54+011318.8: A Highly Luminous Optical Transient at z=0.385
D. E. Vanden Berk, B. C. Lee, B. C. Wilhite +13
We report the discovery of a highly luminous optical transient (OT), SDSS J124602.54+011318.8, associated with a galaxy at a redshift of 0.385. In this paper we consider the possib…
The Unusually Long Duration Gamma-ray Burst GRB 000911
P. A. Price, E. Berger, S. R. Kulkarni +18
Of all the well localized gamma-ray bursts, GRB 000911 has the longest duration (T_90 ~ 500 s), and ranks in the top 1% of BATSE bursts for fluence. Here, we report the discovery o…
The bright optical afterglow of the long GRB 001007
J. M. Castro Cerón, A. J. Castro-Tirado, J. Gorosabel +35
We present optical follow up observations of the long GRB 001007 between 6.14 hours and ~468 days after the event. An unusually bright optical afterglow (OA) was seen to decline fo…
GRB 000301C: a possible short/intermediate duration burst connected to a DLA system
J. Gorosabel, J. U. Fynbo, B. L. Jensen +5
We discuss two main aspects of the GRB 000301C afterglow (Fynbo et al. 2000, Jensen et al. 2000); its short duration and its possible connection with a Damped Ly-alpha Absorber (DL…
Multi-wavelength observations of the Soft Gamma Repeater SGR 1900+14 during its April 2001 activation
C. Kouveliotou, A. Tennant, P. M. Woods +6
The soft-gamma repeater SGR 1900+14 became active on 18 April 2001 after about two years of quiescence; it had remained at a very low state of activity since the fall of 1998, when…
The X-ray afterglow of GRB000926 observed by BeppoSAX and Chandra: a mildly collimated fireball in a dense medium ?
L. Piro, G. Garmire, M. R. Garcia +8
We present X-ray observations of the afterglow of GRB000926 performed around and after the break observed in the optical light curve two days after the burst. The steep X-ray light…