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 DEC-98 by the ROSAT PSPC. X-ray pulses are detected on a $4.5\sigma$ level and make the source the $11^{th}$ millisecond pulsar detected in the X-ray domain. The pulsed fraction is found to be $69\pm 18$. The X-ray pulse profile is characterized by two narrow peaks which match the gross pulse profile observed at 1.4 GHz. Assuming a Crab-like spectrum the X-ray flux is in the range $f_x=2-3\times 10^{-13}$ erg s${}^{-1}$ cm${}^{-2}$ ($0.1-2.4$ keV), implying an X-ray efficiency of $L_x/\dot{E}\sim 0.5-5\times 10^{-3}(d/0.23kpc{)}^2$.

Accepted for publication in ApJ

References in corpus (4)

• Observations of 20 millisecond pulsars in 47 Tucanae at 20 cm
• The Parkes Multibeam Pulsar Survey: PSR J1811-1736 - a pulsar in a highly eccentric binary system
• New Pulsars from an Arecibo Drift Scan Search
• ROSAT PSPC detection of soft X-ray absorption in GB 1428+4217: The most distant matter yet probed with X-ray spectroscopy

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• On the moment of inertia of PSR J0737-3039 A from LIGO/Virgo and NICER
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