Probing the Proper Motion of the Central Compact Object in Puppis-A

Details Probing the Proper Motion of the Central Compact Object in Puppis-A Probing the Proper Motion of the Central Compact Object in Puppis-A

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006iaujd...2e..60h&link_type=abstract

On the Present and Future of Pulsar Astronomy, 26th meeting of the IAU, Joint Discussion 2, 16-17 August, 2006, Prague, Czech Re

Astronomy and Astrophysics

Astronomy

Scientific paper

Max-Planck Institut fuer Extraterrestrische Physik, Garching, Germany Using two observations taken with the High Resolution Camera (HRC-I) aboard the Chandra X-ray satellite, we have examined the central compact object RX J0822-4300 for a possible proper motion. The position of RX J0822-4300 is found to be different by 0.553 ±0.212arcsec, implying a proper motion of 103.56 ±39.70 mas/yr with a position angle of 240 ±28 deg. For a distance of 2.2 kpc, this proper motion is equivalent to a recoil velocity of 1080.75 ±414.32 km/s. Both the magnitude and the direction of the proper motion are in agreement with the birth place of RX J0822-4300 being near to the optical expansion center of the supernova remnant. Although this is a promissing indication of a fast moving compact object in a supernova remnant, the relative large error prevents any constraining conclusion.

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