Polarimetry, Peculiar Mode and X-Ray Alignment of PSR B1821-24.

Details Polarimetry, Peculiar Mode and X-Ray Alignment of PSR B1821-24. Polarimetry, Peculiar Mode and X-Ray Alignment of PSR B1821-24.

Oct 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aj....114.1539b&link_type=abstract

The Astronomical Journal, v. 114, p. 1539.

Astronomy and Astrophysics

Astronomy

20

Pulsars: Individual: Psr B1821-24, X-Rays: Stars

Scientific paper

PSR B1821-24 is a 3.05-ms isolated pulsar located in the globular cluster M28. Its large apparent rotational energy loss rate of 2.2X1036 erg s-1 led Danner et al. (1994, ApJ, 436, L153) and, more recently, Saito et al. (1997, ApJ, 477, L77) to observe and detect this pulsar as an X-ray emitting neutron star. We report here on 800-MHz observations of B1821-24 from a polarimetry program designed to explore the magnetospheric structure of millisecond pulsars. We discuss possible alignments between the radio and X-ray beam components in the context of one and two pole emission models. We also find erratic emission from one of the components of the B1821-24 profile at 1400 MHz, but not at 800 MHz, on time scales of hours and possibly days.

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