Finding the Needle in G18.95-1.1

Details Finding the Needle in G18.95-1.1 Finding the Needle in G18.95-1.1

Feb 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010head...11.1808t&link_type=abstract

American Astronomical Society, HEAD meeting #11, #18.08; Bulletin of the American Astronomical Society, Vol. 41, p.687

Other

Scientific paper

Utilizing the Chandra X-ray Observatory, we have pinpointed the location of a faint X-ray point source and an associated diffuse nebula in the composite supernova remnant G18.95-1.1. These objects appear to be the long-sought pulsar and its wind nebula. The X-ray spectrum of the pulsar is best described by an absorbed powerlaw model with Gamma=1.73 and an NH of about 6x1021cm-2. This model predicts a relatively low unabsorbed X-ray luminosity of about Lx=1.1x1031erg/s in the 0.35-8.0keV energy band and 54% of Lx is emitted above 2keV. The spectral characteristics of the pulsar wind nebula are very similar to the pulsar and agree within the uncertainties of the models. Based on a powerlaw model with Gamma=1.66 and an NH of 5x1021cm-2, the X-ray luminosity amounts to 2x1031erg/s with almost an identical fraction of Lx being emitted above 2keV. No radio or X-ray pulsations have been reported for CXO J182913.1-125113 which we associate with the pulsar. If we assume an age of about 4400-6100yr for G18.95-1.1 and use the observed X-ray luminosity for the pulsar and the relationship between spin-down luminosity and period, we expect the pulsar to have a period of 3.1s. Compared to other rotation-powered pulsars, a magnetic field of 2x1014G is implied by its location in the P-Pdot diagram, a value which is well above that of the quantum critical field.

Affiliated with

Also associated with

No associations

Rating

Finding the Needle in G18.95-1.1 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 Finding the Needle in G18.95-1.1, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Finding the Needle in G18.95-1.1 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1093196