SIMBAD references

2002ApJ...570L..75R - Astrophys. J., 570, L75-L78 (2002/May-2)

A deep search for pulsations from the nearby isolated neutron star RX J1856.5-3754.

RANSOM S.M., GAENSLER B.M. and SLANE P.O.

Abstract (from CDS):

We present the results of a deep search for pulsations from the nearby isolated neutron star RX J1856.5-3754 using the 450 ks director's discretionary time Chandra observation completed on 2001 October 15. No pulsations were detected. We find a 99% confidence upper limit on the pulsed fraction of ∼4.5% for worst-case sinusoidal pulsations with frequency ≲50 Hz and frequency derivatives -5x10–10 Hz s–1≤f{dot}≤0 Hz s–1. The nondetection of pulsations is most likely due to an unfavorable viewing angle or emitting geometry. Such emitting geometries are much more likely to occur for more ``compact'' neutron stars, which show increased gravitational light-bending effects. In this case, the nondetection implies a radius-to-mass ratio for RX J1856.5-3754 of R/M≲10 km.M–1.

Abstract Copyright:

Journal keyword(s): Stars: Individual: Alphanumeric: RX J1856.5-3754 - Stars: Neutron - X-Rays: Stars

Simbad objects: 6

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2021.06.22-15:03:18

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