Astronomy:Anomalous X-ray pulsar

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Anomalous X-ray Pulsars (AXPs) are now widely believed to be magnetars—young, isolated, highly magnetized neutron stars. These energetic X-ray pulsars are characterized by slow rotation periods of ~2–12 seconds and large magnetic fields of ~1013–1015 gauss (1 to 100 gigateslas). There are currently ((As of 2017)) 12 confirmed and 2 candidate AXPs.[1] The identification of AXPs with magnetars was motivated by their similarity to another enigmatic class of sources, the soft gamma repeaters.

A list of AXP candidates and their estimated rotation period in seconds, as of 2003, follows:
AXP 1E 2259+586 6.98  
AXP 1E 1048-59 6.45  
AXP 4U 0142+61 8.69  
AXP 1RXS 1708-40 11.0  
AXP 1E 1841-045 11.8  
AXP AXJ1844-0258 6.97  
AXP CXJ0110-7211 5.44  
Please note that the second, fourth, and last names were abbreviated


  1. SGR/AXP Online Catalog (An online catalog of SGR/AXP properties maintained by the pulsar group at McGill University)


External links