Astronomy and Astrophysics – Astronomy
Scientific paper
May 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21630104h&link_type=abstract
American Astronomical Society, AAS Meeting #216, #301.04; Bulletin of the American Astronomical Society, Vol. 41, p.846
Astronomy and Astrophysics
Astronomy
Scientific paper
Diffuse soft X-ray emission is observed from all directions in the sky. Below 1 keV, a major contributor to this emission is 1-3 million K gas in the Galactic halo, above and below the Galactic disk. The mechanism by which this gas was heated is uncertain, and remains a topic of active research. One possible mechanism is in situ heating by supernovae above the disk. Most of the supernova remnants (SNRs) caused by these extraplanar supernovae would be old and indistinct, but there should be 1 young, bright SNR at high Galactic latitudes in each hemisphere. A bright arc visible in the ROSAT All-Sky Survey maps in the southern Galactic hemisphere may be such a young remnant.
We have carried out X-ray spectroscopy of this bright arc, using the Suzaku satellite. The spectra and the size of the arc are consistent with the arc being the edge of a 100,000-yr old SNR located 1-2 kpc above the disk. This result supports the idea that extraplanar supernovae contribute to the heating of the million degree gas in the halo.
Henley David
Shelton Richard
No associations
LandOfFree
A Possible Supernova Remnant High Above the Galactic Disk 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 A Possible Supernova Remnant High Above the Galactic Disk, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Possible Supernova Remnant High Above the Galactic Disk will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1889681