The anomalous X-ray pulsars

Details The anomalous X-ray pulsars The anomalous X-ray pulsars

Mar 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002pabei..20...45c&link_type=abstract

Progress in Astronomy (ISSN 1000-8349), Vol. 20, No. 1, p. 45 - 58 (2002)

Astronomy and Astrophysics

Astronomy

Pulsars, Neutron Stars, Stars: Magnetic Field, Accretion, X-Ray Sources

Scientific paper

In the last few years it has been recognized that a group of X-ray pulsars have peculiar properties which set them apart from the majority of accreting pulars in X-ray binaries. They are called the Anomalous X-ray Pulsars (AXP). These objects are characterized by very soft X-ray spectra with low and steady X-ray fluxes, narrow-distributed spin periods, steady spin-down, no optical/infrared counterparts. Some of them may associate with supernova remnants. The nature of AXP remains mysterious. It has been suggested that AXP are accreting neutron stars, or solitary "magnetars", neutron stars with super strong magnetic fields (≍1010-1011T). In this paper we review the recent progress in the studies of AXP, and discuss the possible implications from comparison of AXP with other neutron stars, such as radio pulsars, radio quiet X-ray pulsar candidates and soft γ-ray repeaters.

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