[ Previous | Next | ADS ]

IGR J06074+2205 - possible association with radio source

ATel #226; Guy Pooley (MRAO, Cavendish Lab, Cambridge UK)
on 30 Jan 2004; 10:00 UT
Credential Certification: Guy Pooley (ggp1@cam.ac.uk)

Subjects: Radio, X-ray, Transient

Referred to by ATel #: 682, 959

The radio source NVSS J060718+220452 (34.9 mJy at 1.4 GHz, resolution 45 arcsec: Condon et al AJ 115 1693 (1998)) lies some 80 arcsec from the reported position of the transient X-ray source IGR J06074+2205 (ATEL #223). While this is within the current uncertainty in the X-ray position, it may be a chance coincidence. An observation with the Ryle Telescope, Cambridge, at 15 GHz on 2004 Jan 29 shows an unresolved source (resolution 25 x 65 arcsec2) of 4.0 +/- 0.2 mJy. There is no other source above the noise level within the primary beam (6 arcmin FWHM). Assuming that the flux density at 1.4 GHz is unchanged, the radio spectral index is 0.9 (where positive spectral index means flux density decreasing with increasing frequency)