Position and pulse profile of the X-ray transient 4U 0115+63.
Abstract
The celestial position of the 3.6-s X-ray pulsar, 4U 0115 + 63, has been measured to a precision of 12 arcsec in one dimension with the scanning modulation collimator experiment on HEAO 1. This result, together with a position obtained with SAS 3, has led to the identification of an early-type star as the optical counterpart. An X-ray luminosity of approximately 3 by 10 to the 37th power erg/s (3-13 keV) is inferred from the observed flux of about 30% that of the Crab and an estimated distance of 5 kpc. The pulse profile over the energy range 3-13 keV is similar to that of Cen X-3.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- July 1978
- DOI:
- 10.1086/182731
- Bibcode:
- 1978ApJ...223L..71J
- Keywords:
-
- Early Stars;
- Position (Location);
- Pulsars;
- X Ray Sources;
- Collimators;
- Galactic Radiation;
- Luminous Intensity;
- Satellite Observation;
- Spaceborne Astronomy;
- Astronomy;
- Positions:X-Ray Pulsars;
- X-Ray Sources: Transient