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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/55870
- Discovery of a 136 millisecond radio and X-ray pulsar in supernova remnant G54.1+0.3
- Camilo, F.; Lorimer, D. R.; Bhat, N. D. R.; Gotthelf, E. V.; Halpern, J. P.; Wang, Q. D.; Lu, F. J.; Mirabal, N.
- We report the discovery of a pulsar with period P = 136 ms and dispersion measure 308 cm-3 pc in a deep observation of the supernova remnant (SNR) G54.1+0.3 with the Arecibo radio telescope. Timing measurements of the new pulsar, J1930+1852, reveal a characteristic age of P/2P = 2900 yr and a spin-down luminosity of Ė = 1.2 × 1037 ergs s -1. We have subsequently searched archival ASCA X-ray data of this SNR and detect pulsations with a consistent period. These findings ensure that PSR J1930+1852 is the pulsar that powers the 'Crab-like' SNR G54.1+0.3. Together with existing Chandra observations of the SNR, we derive an X-ray pulsed fraction (2-10 keV) of ≈27%. We also find that the cooling efficiency of the pulsar wind nebula (PWN) is intermediate between those of the Vela and Crab PWNe: Lx(2-10 keV) ∼ 0.002Ė. PSR J1930+1852 is a very weak radio source, with a period-averaged flux density at 1180 MHz of 60 μJy. For a distance of 5 kpc, its luminosity, ∼1 mJy kpc2, is among the lowest for known young pulsars.
- Publication type
- Journal article
- The Astrophysical Journal, Vol. 574, no. (Jul 2002), pp. L71-L74
- Publication year
- FOR Code(s)
- 0201 Astronomical and Space Sciences
- ISM; G54.1+0.3; PSR J1930+1852; Pulsar wind nebula; PWN; Pulsars; Supernova remnants
- University of Chicago Press
- Publisher URL
- Copyright © 2002 American Astronomical Society. All rights reserved.
- Peer reviewed