Superorbital Period Variations in the X-ray Pulsar LMC X-4
Abstract
We report the discovery of a decay in the superorbital period of the binary X-ray pulsar LMC X-4. Combining archival data and published long term X-ray light curves, we have found a decay in the third period in this system (P ∼ 30.3 day, P ∼ ‑2 × 10‑5 s s‑1). Along with this result, a comparison of the superorbital intensity variations in LMC X-4, Her X-1 and SMC X-1 is also presented.
- Publication:
-
Journal of Astrophysics and Astronomy
- Pub Date:
- March 2002
- DOI:
- 10.1007/BF02702462
- Bibcode:
- 2002JApA...23...33P
- Keywords:
-
- Accretion;
- accretion disks;
- stars: individual (LMC X-4);
- stars: neutron;
- X-rays: stars;
- binaries