Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...285..209m&link_type=abstract
Astronomy and Astrophysics 285, 209-212 (1994)
Astronomy and Astrophysics
Astrophysics
9
Stars: Individual (Exo 2030+375), Stars: Neutron, X-Rays: Stars
Scientific paper
The X-ray transient pulsar EXO 2030+375 was observed by ROSAT in November 1990 during the All-Sky survey. The observation took place very close to periastron passage and the source was clearly visible over an interval of two days. The average flux level suggests an active companion star although the ROSAT flux is lower than the observed flux in most of the EXOSAT observations. The spectrum is heavily absorbed below 1 keV and the hardness ratio indicates a column density of 2-3 x 10^22^ cm^-2^, consistent with previous measurements. The amount of pulsed flux in the soft X-ray band and the absence of a soft excess in EXOSAT archival data suggest that the soft X-rays originate from the immediate vicinity of the neutron star. Joint spectral fits of soft and hard X-ray EXOSAT data further show that the neutral column density, intrinsic to the source, is of the order of 10^22^ cm^-2^.
No associations
LandOfFree
Soft X-ray observations of EXO 2030+375 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 Soft X-ray observations of EXO 2030+375, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Soft X-ray observations of EXO 2030+375 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-879770