2008ApJ...684L..99C

Query : 2008ApJ...684L..99C

2008ApJ...684L..99C - Astrophys. J., 684, L99-L102 (2008/September-2)

Swift observations of SAX J1808.4-3658: monitoring the return to quiescence.

CAMPANA S., STELLA L. and KENNEA J.A.

Abstract (from CDS):

The transient accreting millisecond pulsar SAX J1808.4-3658 has shown several outbursts to date but the transition from outburst to quiescence has never been investigated in detail. Thanks to the Swift observing flexibility, we monitored for the first time the decay to quiescence during the 2005 outburst. At variance with other transients, wide luminosity variations are observed. In addition, close to quiescence, SAX J1808.4-3658 seems to switch between two different states. We interpret them in terms of the accretion states accessible to a magnetized, fast-rotating neutron star.

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Journal keyword(s): Accretion, Accretion Disks - Stars: Individual: Alphanumeric: SAX J1808.4-3658 - Stars: Neutron

Simbad objects: 5

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Number of rows : 5
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 PSR J1740-5340 Psr 17 40 44.589 -53 40 40.90   17.43   16.25   ~ 157 2
2 [KRL2007b] 291 LXB 17 51 13.49 -30 37 23.4           ~ 262 0
3 SWIFT J1756.9-2508 LXB 17 56 57.35 -25 06 27.8           ~ 118 0
4 SAX J1808.4-3658 LXB 18 08 27.58 -36 58 43.9           ~ 1051 0
5 X Aql X-1 LXB 19 11 16.0571313336 +00 35 05.868232692           ~ 1186 1

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