Kuehnel: Created page with "Category:Accreting X-ray Pulsars [http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=+MXB+0656-072&submit=SIMBAD+search simbad] Transient source, discovered in 1975 by SA..."

2018-04-18T12:23:40Z

Created page with "Category:Accreting X-ray Pulsars [http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=+MXB+0656-072&submit=SIMBAD+search simbad] Transient source, discovered in 1975 by SA..."

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[[Category:Accreting X-ray Pulsars]]

[http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=+MXB+0656-072&submit=SIMBAD+search simbad]

Transient source, discovered in 1975 by SAS-3 (<ref name="Clark75" />).

In quiescence since 1975/1976, it became active again in 2003 with an outburst in October 2003 (<ref name="Remillard03" />).

New outburst detected in November 2007 (<ref name="Kreykenbohm07" />).

Monitoring data: [http://xte.mit.edu/XTE/asmlc/srcs/x0656-072.html RXTE/ASM],
[http://swift.gsfc.nasa.gov/docs/swift/results/transients/weak/MXB0656-072/ Swift/BAT],
[http://maxi.riken.jp/top/index.php?cid=1&jname=J0658-072 MAXI],
[http://www.batse.msfc.nasa.gov/gbm/science/pulsars/lightcurves/mxb0656.html Fermi/GBM ]

= Coordinates =

RA 06h 58m 16.80s, DEC -07° 12' 37.8'' (J2000)<br />
l 220.1283°, b -01.7694° (J2000)

= Optical companion =

O9.7Ve ([(biblio:Pakull03)]).

= Binary system =

Distance: 3.9 +/-0.1 kpc <ref name="McBride06" />

= Orbit =

The orbital period of the system was determined to '''101.2 d''' using the outburst spacing seen in RXTE/ASM and Swift/BAT (<ref name="Yan2012" />). The remaining orbital parameters of the system remain undetermined.
= Spectrum =

Continuum spectrum well described with a power law with an exponential cutoff.

Cyclotron line at ~35 keV discovered by <ref name="Heindl03b" /> with RXTE.

Study of the cyclotron line with RXTE in <ref name="McBride06" />.

= Pulse period =

Average pulse period of 160.4+/-0.4 s, spin-up Pdot=-0.0202+/-0.0003 s/day during the 2003 outburst.

Pulse period monitored with [http://www.batse.msfc.nasa.gov/gbm/science/pulsars/lightcurves/mxb0656.html Fermi/GBM ]

= Pulse profiles =

Single-peaked and sinusoidal in all energy ranges (2-60 keV).

Pulsed fraction (Fmax-Fmin/Fmax) increases steadily from 26% in the 2-5 keV band up to 40% in the 30-60 keV band <ref name="McBride06" />.

'''References'''

MXB 0656-07 - Revision history

Kuehnel: Created page with "Category:Accreting X-ray Pulsars [http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=+MXB+0656-072&submit=SIMBAD+search simbad] Transient source, discovered in 1975 by SA..."