Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-09-28
Astrophys.J. 580 (2002) L143-L146
Astronomy and Astrophysics
Astrophysics
4 pages. Accepted for publication on ApJ Letters. emulateapj5.sty macro used
Scientific paper
10.1086/345612
We report on the detection of variability from the proposed IR counterpart to the Anomalous X-ray Pulsar (AXP) 1E1048.1-5937 based on Chandra and ESO optical/IR deep observations carried out in 2001-2002. Within the narrow Chandra uncertainty region for 1E1048.1-5937 we found only one relatively faint (J=22.1+/-0.3, J-Ks=2.4) source, while the recently proposed IR counterpart was not detected down to a limiting Ks magnitude of about 20.7 (3sigma confidence level). This implies a remarkable IR brightening of this object, Delta Ks>1.3, on a timescale of about 50 days. Although our knowledge of the IR properties of AXPs is rather limited (there is only another source, 1E2259+586, for which IR variability has been detected), the observed IR variability of the proposed counterpart strengthens its association with 1E1048.1-5937. Our results make the IR (and presumably optical) variability a likely common characteristic of AXPs, and provide new constraints on this class of objects.
Angelini Leonardo
Burderi Luciano
Campana Sergio
Covino Stefano
Israel Gian Luca
No associations
LandOfFree
The detection of variability from the candidate IR counterpart to the Anomalous X-ray Pulsar 1E1048.1-5937 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 detection of variability from the candidate IR counterpart to the Anomalous X-ray Pulsar 1E1048.1-5937, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The detection of variability from the candidate IR counterpart to the Anomalous X-ray Pulsar 1E1048.1-5937 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-171289