X-Rays from the Nearby Solitary Millisecond Pulsar PSR J0030+0451: The Final ROSAT Observations
Abstract
We report on X-ray observations of the solitary 4.8 ms pulsar PSR J0030+0451. The pulsar was one of the last targets observed in 1998 December by the ROSAT PSPC. X-ray pulses are detected on a 4.5 σ level and make the source the 11th millisecond pulsar detected in the X-ray domain. The pulsed fraction is found to be 69%+/-18%. The X-ray pulse profile is characterized by two narrow peaks that match the gross pulse profile observed at 1.4 GHz. Assuming a Crab-like spectrum the X-ray flux is in the range fX=(2-3)×10-13 ergs s-1 cm-2 (0.1-2.4 keV), implying an X-ray efficiency of LX/E~(0.5-5)×10-3(d/0.23 kpc)2.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- December 2000
- DOI:
- 10.1086/317839
- arXiv:
- arXiv:astro-ph/0009110
- Bibcode:
- 2000ApJ...545.1015B
- Keywords:
-
- pulsars: individual (PSR J0030+0451);
- Radiation Mechanisms: Nonthermal;
- Stars: Neutron;
- X-Rays: Stars;
- Astrophysics
- E-Print:
- Accepted for publication in ApJ