4U 1820-30 as a Potential Test of the Nonsymmetric Gravitational Theory of Moffat
Abstract
Recent observations of the X-ray burst source 4U 1820-30 have revealed a 685 s modulation of the luminosity. The author discusses how this system could provide a stringent test of the nonsymmetric gravitational theory (NGT) of Moffat, provided the observed periodicity is due to orbital motion of a binary system. The possible orbital period change predicted by general relativity may be detectable in this system.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- September 1987
- DOI:
- 10.1086/184974
- Bibcode:
- 1987ApJ...320L..47K
- Keywords:
-
- Stellar Gravitation;
- Stellar Luminosity;
- X Ray Binaries;
- Exosat Satellite;
- Neutron Stars;
- Astrophysics;
- GRAVITATION;
- RELATIVITY;
- STARS: BINARIES