Early phases of different types of isolated neutron star

Ankay, A
Sahin, S
Karanfil, G
Yazgan, E
Two Galactic isolated strong X-ray pulsars seem to be in the densest environments compared to other types of Galactic pulsar. X-ray pulsar J1846-0258 can be in an early phase of anomalous X-ray pulsars and soft gamma repeaters if its average braking index is similar to 1.8-2.0. X-ray pulsar J1811-1925 must have a very large average braking index (similar to 11) if this pulsar was formed by SN 386AD. This X-ray pulsar can be in an early phase of the evolution of the radio pulsars located in the region P similar to 50-150 ms and P similar to 10(-14)-10(-16) ss(-1) of the P-P diagram. X-ray/radio pulsar J0540-69 seems to be evolving in the direction to the dim isolated thermal neutron star region on the P-P diagram. Possible progenitors of different types of neutron star are also discussed.


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In this paper, timing data for anomalous X-ray pulsars and soft gamma repeaters are compiled. Timing properties of these objects are investigated. The effect of bursts of soft gamma repeaters on their period history is investigated. The P-P diagram for pulsars, X-ray binaries, anomalous X-ray pulsars, soft gamma repeaters and dim radio quiet neutron stars is constructed. The possible evolutionary tracks for anomalous X-ray pulsars, soft gamma repeaters and dim radio quiet neutron stars are examined.
Citation Formats
A. Ankay, S. Sahin, G. Karanfil, and E. Yazgan, “Early phases of different types of isolated neutron star,” INTERNATIONAL JOURNAL OF MODERN PHYSICS D, pp. 1075–1082, 2005, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/67831.