V 0332+53

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Also known as EXO 0331+530 and V BQ Cam Simbad [1] [2]

Monitoring Data:

RXTE/ASM Swift/BAT MAXI Fermi/GBM pulsed flux

System Overview

Porb 34.25 days [3]
Pspin ~4.4 s [3]
B 2.7 x 1012 G [4]
a sin i 48±4 lt-sec [3]
eccentricity 0.31±0.03 [3]
ω 313±10 degree [3]
Τperiastron 2445652±1 JD [3]
distance ~7 kpc [5]

Description

V 0332+53 was first recognized in Tenma observations from late 1983 to January 1984 ([1], [2]). After the detection it was realized that it had been seen by Vela 5B in 1973 ([6]). Follow-up observations by EXOSAT discovered pulsations and allowed the determination of orbital parameters ([3]).

The Tenma observations already showed evidence for a cyclotron line at ~28 keV. Ginga observations (2–60 keV) during an outburst in 1989 found two lines at 28.5 and 53 keV ([7]). During the next bright outburst in 2004, INTEGRAL observations ([4]) found a third cyclotron line at ~74 keV.

References

  1. 1.0 1.1 Cite error: Invalid <ref> tag; no text was provided for refs named Tanaka83
  2. 2.0 2.1 Cite error: Invalid <ref> tag; no text was provided for refs named Makishima90b
  3. 3.0 3.1 3.2 3.3 3.4 3.5 3.6 Cite error: Invalid <ref> tag; no text was provided for refs named Stella85
  4. 4.0 4.1 Cite error: Invalid <ref> tag; no text was provided for refs named Pottschmidt05
  5. Cite error: Invalid <ref> tag; no text was provided for refs named Negueruela99
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  7. Cite error: Invalid <ref> tag; no text was provided for refs named Makishima90