2001A&A...380L..26I


C.D.S. - SIMBAD4 rel 1.7 - 2019.11.13CET06:53:02

2001A&A...380L..26I - Astronomy and Astrophysics, volume 380, L26-29 (2001/12-2)

Discovery of a 1247 s pulsar in the Be X-ray binary SAX J2239.3+6116.

IN'T ZAND J.J.M., SWANK J., CORBET R.H.D. and MARKWARDT C.B.

Abstract (from CDS):

A search for pulsations from the Be X-ray binary SAX J2239.3+6116, through observations with the Narrow Field Instruments on BeppoSAX and the Proportional Counter Array on RXTE, yielded the clear presence of a 1247 s coherent oscillation. Given the fairly high X-ray luminosity on previous occasions (up to a few times 1036erg/s in 2 to 28keV), the oscillation must be due to the spin of a neutron star. Assuming that the 262 day recurrence time is the orbital period, SAX J2239.3+6116 has both the longest orbital period and the longest pulse period of 24 Be X-ray binaries with measured orbital periods.

Abstract Copyright:

Journal keyword(s): stars: neutron - pulsars: individual: SAX J2239.3+6116 - X-rays: binaries

Simbad objects: 4

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Number of rows : 4

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 V* X Per HXB 03 55 23.0778791365 +31 02 45.045745259 6.090 6.840 6.720     O9.5III 898 0
2 HD 153919 HXB 17 03 56.7728262865 -37 50 38.912077679 6.06 6.78 6.51 6.08 5.90 O6Iafcp 744 1
3 4U 1850-03 HXB 18 48 17.7 -02 25 13           Be? 96 1
4 4U 2238+60 HXB 22 39 20.8444678371 +61 16 26.607919757   16.26 14.80 13.89 12.92 Be 42 0

    Equat.    Gal    SGal    Ecl

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2019.11.13-06:53:02

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