A New Young Galactic Supernova Remnant Containing a Compact Object: G15.9+0.2

Details A New Young Galactic Supernova Remnant Containing a Compact Object: G15.9+0.2 A New Young Galactic Supernova Remnant Containing a Compact Object: G15.9+0.2

2006-10-11

arxiv.org/abs/astro-ph/0610323v1

Astrophys.J.652:L45-L48,2006

Astronomy and Astrophysics

Astrophysics

4 pages, 3 figures. Accepted by ApJ Letters

Scientific paper

10.1086/510066

We identify the radio-emitting shell-type supernova remnant G15.9+0.2 as a relatively young remnant containing an X-ray point source that may be its associated neutron star. The integrated spectrum of the remnant shell obtained from our 30 ks exploratory Chandra observation shows very strong lines that require elevated element abundances from ejecta, in particular of sulfur. A plane-shock model fit gives a temperature $kT = 0.9 (0.8, 1.0)$ keV, an ionization timescale $n_et = 6 (4, 9) \times 10^{10}$ cm$^{-3}$ s, and a sulfur abundance of 2.1 (1.7, 2.7) times solar (90% confidence limits). Two-component models with one solar and one enriched component are also plausible, but are not well constrained by the data. Various estimates give a remnant age of order $10^3$ yr, which would make G15.9+0.2 among the dozen or so youngest remnants in the Galaxy. The sparse point source spectrum is consistent with either a steep $\Gamma \sim$ 4 power law or a $kT \sim$ 0.4 keV blackbody. The spectrum is absorbed by a H column density $N_H \sim 4 \times 10^{22}$ cm$^{-2}$ similar to that required for the remnant shell. The implied 2--9.5 keV source luminosity is about $10^{33}$ ergs s$^{-1}$ for an assumed distance of 8.5 kpc consistent with the high absorption column. We suggest that the point source is either a rotation-powered pulsar or a compact central object (CCO).

Affiliated with

Also associated with

No associations

Rating

A New Young Galactic Supernova Remnant Containing a Compact Object: G15.9+0.2 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 New Young Galactic Supernova Remnant Containing a Compact Object: G15.9+0.2, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A New Young Galactic Supernova Remnant Containing a Compact Object: G15.9+0.2 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-578256