GRB 980329 ROSAT observation
Abstract
A ROSAT target-of-opportunity observation was performed towards the position of GRB 980329 (IAUC 6853) between April 1--3, 1998. The total exposure time was 33.5 ksec. No X-ray source is detected within the WFC error box at the 3 sigma significance level or higher (upper limit of 0.0001 cts/s). Adopting a power law spectrum with photon index of 2.0 and only galactic absorption (9*10^20 cm^-2), this corresponds to a flux limit of 9.3E-15 erg/cm^2/s in the 0.1-2.4 keV band. The non-detection of the X-ray afterglow source 1SAX J0702.6+3850 as detected with the BeppoSAX NFI (IAUC 6854) implies that the X-ray flux of the GRB 980329 afterglow decayed according to t^-1.8 or steeper. An image of the ROSAT observation is available at http://www.obs.aip.de/~jcg/grb980329.html.
- Publication:
-
GRB Coordinates Network
- Pub Date:
- April 1998
- Bibcode:
- 1998GCN....59....1G