6533b7defe1ef96bd1275ca1
RESEARCH PRODUCT
Search for radio pulsations in four Anomalous X-ray Pulsars and discovery of two new pulsars
N. D'amicoT. Di SalvoG. L. IsraelNanda ReaM. BurgayLuciano BurderiLuigi StellaAndrea Possentisubject
Radio telescopePhysicsPulsarSpace and Planetary ScienceAstrophysics::High Energy Astrophysical PhenomenaSpin rateAstrophysics (astro-ph)FOS: Physical sciencesAstronomy and AstrophysicsAstrophysicsAstrophysics::Cosmology and Extragalactic AstrophysicsAstrophysicsSpin-½description
We report on observations of four southern Anomalous X-ray Pulsars, (1RXS J170849.0-400910, 1E 1048.1-5937, 1E 1841-045 and AX J1845-0258), obtained at 1.4 GHz using the Parkes radio telescope. Radio pulsations from these sources have been searched (i) by directly folding the time series at a number of trial periods centered on the value of the spin rate obtained from the X-ray observations; (ii) by performing a blind search; (iii) using a code sensitive to single dedispersed pulses, in the aim to detect signals similar to those of the recently discovered Rotating RAdio Transients. No evidence for radio pulsations with an upper limit of ~0.1 mJy for any of the four targets has been found. The blind search led to the serendipitous discovery of two new pulsars, rotating with a spin period of about 0.7 s and of 92 ms respectively, and to the further detection of 18 known pulsars, two of which were also detected in the single-pulse search.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2006-07-27 |