1999/10/21 by T. Oosterbroek, Oosterbroek, T., M. Orlandini +15
Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9910384
Accepted for publication in Astronomy and Astrophysics Letters
arxiv created 1999/10/21 · arxiv updated 2009/12/01
A new pulsar, 1SAX J1452.8-5949, was discovered during a BeppoSAX galactic plane survey on 1999 July 20 at R.A.=14h 52m 49s, Dec=-59 49' 18'' (J2000) with a 90% confidence uncertainty radius of 50''. Coherent pulsations were detected with a barycentric period of a 437.4 +/- 1.4 s. The X-ray spectrum can be modeled by a power-law with a photon index of 1.4 +/- 0.6 and absorption consistent with the galactic value in the direction of the source (1.9 × 1022 atom cm-2). An Fe K line with a equivalent width of \approxgt1.3 keV may be present in the spectrum. The unabsorbed 2-10 keV flux is 9 × 10-13 erg cm-2s-1. The X-ray properties and lack of an obvious optical counterpart are consistent with a Be star companion at a distance of between approximately 6 and 12 kpc which implies a luminosity of (4-15)× 1033 erg s-1.