SIMBAD references

1999A&A...351..177M - Astronomy and Astrophysics, volume 351, 177-184 (1999/11-1)

The isolated neutron star candidate RX J1605.3+3249.

MOTCH C., HABERL F., ZICKGRAF F.-J., HASINGER G. and SCHWOPE A.D.

Abstract (from CDS):

We report on X-ray and optical observations of a ROSAT X-ray source, RX J1605.3+3249, selected from the all-sky survey on the basis of its spectral softness and lack of bright optical counterpart. The ROSAT PSPC energy distribution is well fitted by a blackbody with kT=92±6eV and NH=1.1±0.4x1020cm–2. X-ray observations spanning 6.5 years fail to reveal any flux or spectral variability on any time scales. The ROSAT HRI error circle only contains a R = 23.25 M star which is unlikely to be associated with the X-ray source. We conclude that RX J1605.3+3249 is a probable nearby isolated neutron star detected from its thermal emission. The present data do not allow to unambiguously determine the X-ray powering mechanism, cooling from a young neutron star or heating by accretion from the interstellar medium onto an old neutron star. However, the long term stability of the X-ray flux favours the young neutron star hypothesis.

Abstract Copyright:

Journal keyword(s): stars: individual: RX J1605.3+3249 - stars: neutron - X-rays: general

Nomenclature: Fig.4, Table 2: [MHZ99] A (Nos A-D).

Simbad objects: 19

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