The X-ray Halo of GX5-1

Details The X-ray Halo of GX5-1 The X-ray Halo of GX5-1

2006-05-08

arxiv.org/abs/astro-ph/0605199v1

Astrophys.J.648:452-460,2006

Astronomy and Astrophysics

Astrophysics

10 pages, accepted by ApJ

Scientific paper

10.1086/505650

Using Chandra observations we have measured the energy-resolved dust-scattered X-ray halo around the low-mass X-ray binary GX5-1, which shows signs of both singly- and multiply-scattered X-rays. We compared the observed X-ray halo at various energies to predictions from a range of dust models. These fits used both smoothly-distributed dust as well as dust in clumped clouds, with CO and 21 cm observations helping to determine the position of the clouds along the line of sight. We found that the BARE-GR-B model of Zubko, Dwek & Arendt (2004 generally led to the best results, although inadequacies in both the overall model and the data limit our conclusions. We also found that the composite dust models of Zubko, Dwek & Arendt (2004), especially the ``no carbon'' models, gave uniformly poor results. Although models using cloud positions and densities derived naively from CO and 21 cm data gave generally poor results, plausible adjustments to the distance of the largest cloud and the mass of a cloud in the expanding 3 kpc Arm lead to significantly improved fits. We suggest that combining X-ray halo, CO, and 21 cm observations will be a fruitful method to improve our understanding of both the gas and dust phases of the interstellar medium.

Affiliated with

Also associated with

No associations

Rating

The X-ray Halo of GX5-1 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 The X-ray Halo of GX5-1, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The X-ray Halo of GX5-1 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-463957