The Optical Counterpart of the Isolated Neutron Star RX J1605.3+3249

Details The Optical Counterpart of the Isolated Neutron Star RX J1605.3+3249 The Optical Counterpart of the Isolated Neutron Star RX J1605.3+3249

2003-02-18

arxiv.org/abs/astro-ph/0302370v2

Astrophys.J.588:L33-L36,2003

Astronomy and Astrophysics

Astrophysics

5 pages, 4 figures. Uses emulateapj5.sty, onecolfloat5.sty. Accepted by ApJL. Small changes from ver. 1 following referee's re

Scientific paper

10.1086/375523

We have detected the optical counterpart to the nearby isolated neutron star RX J1605.3+3249 using observations from the Space Telescope Imaging Spectrometer aboard the Hubble Space Telescope. The counterpart, with m_{50CCD}=26.84+/-0.07 mag and very blue colors, lies close to the ROSAT HRI error circle and within the Chandra error circle. The spectrum is consistent with a Rayleigh-Jeans tail whose emission is a factor of ~14 above the extrapolation of the X-ray blackbody, and the source has an unabsorbed X-ray-to-optical flux ratio of log(fX/fopt)=4.4, similar to that of other isolated neutron stars. This confirms the classification of RX J1605.3+3249 as a neutron star.

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