The Compact Central Source of the SNR G266.2-1.2

Details The Compact Central Source of the SNR G266.2-1.2 The Compact Central Source of the SNR G266.2-1.2

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...200.7202k&link_type=abstract

American Astronomical Society, 200th AAS Meeting, #72.02; Bulletin of the American Astronomical Society, Vol. 34, p.764

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We observed the compact central object CXOU J085201.4-461753 in the supernova remnant G266.2-1.2 (``Vela Junior'') with the Chandra ACIS detector in timing mode. The spectrum of this object is best described by a blackbody model with the temperature kT=404+/- 5 eV and radius of emitting region R=0.28+/- 0.01 km, at a distance of 1 kpc. Power-law and thermal plasma models do not fit the source spectrum. The spectrum shows a marginally significant feature at 1.68 keV. The significance of period candidates in the power spectrum is too low to claim the detection of a periodic signal. We set an upper limit of 13% on the pulsed fraction in the 0.001-100 Hz range. We find no evidence for long-term variability of the source flux, and no evidence for extended emission around the central object. We suggest that CXOU J085201.4-461753 is a neutron star, similar to the central source of the Cas A SNR. This work was partially supported by NASA grant NAG5-10865.

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