Published March 10, 2010
| Version v1
Journal article
THE ORBITAL PERIOD OF SWIFT J1626.6-5156
- 1. METU, Physics Department, Ankara 06531 (Turkey)
- 2. Sabanci University, Faculty of Engineering and Natural Sciences, Orhanli-Tuzla, Istanbul 34956 (Turkey)
- 3. Department of Electrical and Electronics Engineering, Baskent University, Ankara 06530 (Turkey)
- 4. INAF-Osservatorio Astronomico di Brera, Via E. Bianchi 46, I-23807 Merate (Italy)
Description
We present the discovery of the orbital period of Swift J1626.6-5156. Since its discovery in 2005, the source has been monitored with Rossi X-Ray Timing Explorer, especially during the early stage of the outburst and into the X-ray modulating episode. Using a data span of ∼700 days, we obtain the orbital period of the system as 132.9 days. We find that the orbit is close to a circular shape with an eccentricity 0.08, that is one of the smallest among Be/X-ray binary systems. Moreover, we find that the timescale of the X-ray modulations varied, which led to earlier suggestions of orbital periods at about a third and half of the orbital period of Swift J1626.6-5156.
Availability note (English)
Available from http://dx.doi.org/10.1088/0004-637X/711/2/1306Additional details
Identifiers
Publishing Information
- Journal Title
- Astrophysical Journal
- Journal Volume
- 711
- Journal Issue
- 2
- Journal Page Range
- p. 1306-1309
- ISSN
- 0004-637X
- CODEN
- ASJOAB
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 41121765
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Descriptors DEI
- ACCRETION DISKS; NEUTRON STARS; NEUTRONS; ORBITS; X RADIATION
- Descriptors DEC
- BARYONS; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; FERMIONS; HADRONS; IONIZING RADIATIONS; NUCLEONS; RADIATIONS; STARS