Orbital parameters of V 0332+53 from 2015 giant outburst data

Abstract

We present the updated orbital solution for the transient Be X-ray binary V 0332+53 comple- menting historical measurements with the data from the gamma-ray burst monitor onboard Fermi obtained during the outburst in June-October 2015. We model the observed changes in the spin- frequency of the pulsar and deduce the orbital parameters of the system. We significantly improve existing constrains and show that contrary to the previous findings no change in orbital parameters is required to explain the spin evolution of the source during the outbursts in 1983, 2005 and 2015. The reconstructed intrinsic spin-up of the neutron star during the latest outburst is found to be comparable with previosly observed values and predictions of the accretion torque theory.

3 pages, 2 figures, submitted to A&A

References in corpus (4)

• MHD simulations of accretion onto a dipolar magnetosphere. II. Magnetospheric ejections and stellar spin-down
• Accretion funnels onto weakly magnetized young stars
• Giant Outbursts in Be/X-ray Binaries
• Transient X-ray pulsar V0332+53: pulse phase-resolved spectroscopy and the reflection model

Cited by in corpus (19)

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• A universal relation for the propeller mechanisms in magnetic rotating stars at different scales
• Meta-stable low-level accretion rate states or neutron star crust cooling in the Be/X-ray transients V0332+53 and 4U 0115+63
• Correlation between the luminosity and spin-period changes during outbursts of 12 Be binary pulsars observed by the MAXI/GSC and the Fermi/GBM
• NuSTAR observations of the wind-fed X-ray pulsar GX 301--2 during an unusual spin-up event
• RX J0440.9+4431: another supercritical X-ray pulsar
• The Soft X-ray Spectrum of the High Mass X-Ray Binary V0332+53 in Quiescence
• Common patterns in pulse profiles of High Mass X-ray Binaries
• Two giant outbursts of V 0332+53 observed with INTEGRAL
• Pulsating iron spectral features in the emission of X-ray pulsar V0332+53
• Quiescent X-ray variability in the neutron star Be/X-ray transient GRO J1750-27
• Fast time optical variability in Be/X-ray binaries. Pulsation and rotation
• Energy-resolved pulse profile changes in V 0332+53: Indications of wings in the cyclotron absorption line profile
• SRG/ART-XC, Swift, NICER and NuSTAR study of different states of the transient X-ray pulsar MAXI J0903-531
• Observations of V0332+53 during the 2015 Outburst using Fermi/GBM, MAXI, Swift, and INTEGRAL
• Astrophysical parameters of LS 437 and the nature of X0726-260
• Long-term optical variability of high-mass X-ray binaries. III. Polarimetry