1996/12/09 by R. P. Fender, Fender, R. P., P. Roche +11
Earth and Planetary Sciences · Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics (astro-ph) #FOS: Physical sciences #High-pressure geophysics and materials #Pulsars and Gravitational Waves Research
paper · pdf · doi:10.48550/arxiv.astro-ph/9612080
openalex publication_date 1996/12/09 · openalex created_date 2020/05/01 · openalex updated_date 2026/07/28
We present results from a deep search for radio emission from the X-ray\npulsar systems GX 1+4, GS 0834-430 and 4U 0115+63 which have variously been\nsuggested to possess radio jets and to be good candidates for propellor\nejection mechanisms. None of these sources is detected at their optical\npositions, to 3 sigma limits of a few hundred micro-Jy. This places upper\nlimits on their radio luminosities and thus on the internal energy and numbers\nof any relativistic electrons which are three to four orders of magnitude below\nthose of radio-bright X-ray binaries such as SS 433 and Cyg X-3. Spectral and\nstructural information on the proposed `radio lobes' of GX 1+4 make their\nassociation with the source unlikely. The lack of detected radio emission from\nany X-ray pulsar system is discussed statistically, and it is found that X-ray\npulsations and radio emission from X-ray binaries are strongly anti-correlated.\n