2006ApJ...638L...5R

Query : 2006ApJ...638L...5R

2006ApJ...638L...5R - Astrophys. J., 638, L5-L8 (2006/February-2)

The anomalous early afterglow of GRB 050801.

RYKOFF E.S., MANGANO V., YOST S.A., SARI R., AHARONIAN F., AKERLOF C.W., ASHLEY M.C.B., BARTHELMY S.D., BURROWS D.N., GEHRELS N., GOCUS E., GUVER T., HORNS D., KIZILOGLU U., KRIMM H.A., McKAY T.A., OZEL M., PHILLIPS A., QUIMBY R.M., ROWELL G., RUJOPAKARN W., SCHAEFER B.E., SMITH D.A., SWAN H.F., VESTRAND W.T., WHEELER J.C., WREN J. and YUAN F.

Abstract (from CDS):

The ROTSE-IIIc telescope at the HESS site, Namibia, obtained the earliest detection of optical emission from a gamma-ray burst (GRB), beginning only 21.8 s from the onset of Swift GRB 050801. The optical light curve does not fade or brighten significantly over the first ∼250 s, after which there is an achromatic break and the light curve declines in typical power-law fashion. The Swift XRT also obtained early observations starting at 69 s after the burst onset. The X-ray light curve shows the same features as the optical light curve. These correlated variations in the early optical and X-ray emission imply a common origin in space and time. This behavior is difficult to reconcile with the standard models of early afterglow emission.

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Journal keyword(s): Gamma Rays: Bursts

Simbad objects: 8

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Number of rows : 8
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 GRB 041219 gB 00 24 27.7 +62 50 34           ~ 231 1
2 GRB 041006 gB 00 54 50.17 +01 14 07.0           ~ 202 2
3 GRB 050319 gB 10 16 47.900 +43 32 53.80   18.02 17.01     ~ 274 0
4 GRB 030418 gB 10 54 33.69 -07 01 40.8           ~ 69 0
5 GRB 050801 gB 13 36 35.000 -21 55 41.00 15.03 15.82 15.46     ~ 164 0
6 GRB 990123 gB 15 25 29 +44 45.0     8.95     ~ 1012 1
7 GRB 050401 gB 16 31 28.84 +02 11 14.5           ~ 348 0
8 SN 2005nc SN* 18 32 32.560 +26 20 22.34           SNIc: 400 1

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