INTEGRAL Observations of the Vela Region Focusing on Vela X-1

Details INTEGRAL Observations of the Vela Region Focusing on Vela X-1 INTEGRAL Observations of the Vela Region Focusing on Vela X-1

2007-01-23

arxiv.org/abs/astro-ph/0701641v1

Astronomy and Astrophysics

Astrophysics

4 pages, 11 figures. Accepted for publication in ESA SP-622 (Proceedings of the 6th INTEGRAL Workshop, Moscow, 2006 07 03-07)

Scientific paper

The Vela region has been observed for 1.7 Ms in November 2005 by the INTEGRAL satellite. We present preliminary spectral and temporal results of Vela X-1, an eclipsing neutron star hosted in a wind-accreting high-mass X-ray binary system. Using data from ISGRI, SPI and JEM-X, we firmly confirm the existence of cyclotron resonant scattering features (CRSF) at ~27 keV and ~54 keV, implying a neutron-star magnetic field of ~3 10^12 Gauss, and the presence of an iron emission line at ~6.5 keV. During two strong flares those parameters remained unchanged. Furthermore we measure the neutron-star spin period of 283.6 s, indicating a still constant trend.

Affiliated with

Also associated with

No associations

Rating

INTEGRAL Observations of the Vela Region Focusing on Vela X-1 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 INTEGRAL Observations of the Vela Region Focusing on Vela X-1, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and INTEGRAL Observations of the Vela Region Focusing on Vela X-1 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-205432