Astronomy and Astrophysics – Astrophysics
Scientific paper
2000-07-14
Astrophys.J.545:271-276,2004
Astronomy and Astrophysics
Astrophysics
Accepted for publication in The Astrophysical Journal. 12 pages; citations & references updated; minor textual changes
Scientific paper
10.1086/317816
We report near-infrared and optical follow-up observations of the afterglow of the Gamma-Ray Burst 000418 starting 2.5 days after the occurrence of the burst and extending over nearly seven weeks. GRB 000418 represents the second case for which the afterglow was initially identified by observations in the near-infrared. During the first 10 days its R-band afterglow was well characterized by a single power-law decay with a slope of 0.86. However, at later times the temporal evolution of the afterglow flattens with respect to a simple power-law decay. Attributing this to an underlying host galaxy we find its magnitude to be R=23.9 and an intrinsic afterglow decay slope of 1.22. The afterglow was very red with R-K=4 mag. The observations can be explained by an adiabatic, spherical fireball solution and a heavy reddening due to dust extinction in the host galaxy. This supports the picture that (long) bursts are associated with events in star-forming regions.
Bartolini Corrado
Benetti Stefano
Butler Dan
Castro Cerón José María
Castro-Tirado Alberto
No associations
LandOfFree
The very red afterglow of GRB 000418 - further evidence for dust extinction in a GRB host galaxy does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The very red afterglow of GRB 000418 - further evidence for dust extinction in a GRB host galaxy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The very red afterglow of GRB 000418 - further evidence for dust extinction in a GRB host galaxy will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-15082