PKS 1148−001
| PKS 1148−001 | |
|---|---|
 PKS 1148−001 as observed by the Sloan Digital Sky Survey | |
| Observation data (J2000.0 epoch) | |
| Constellation | Virgo |
| Right ascension | 11h 50m 43.871s |
| Declination | −00° 23′ 54.20″ |
| Redshift | 1.979562 |
| Characteristics | |
| Type | Optically variable, radio-loud quasar |
| Other designations | |
| UM 458, 4C −00.47, PGC 37034, QUEST 042860, MRC 1148−001, MG1 J115044−0024, OM -480, TXS 1148−001, 1RXS J115044.2−002349, CoNFIG 113 | |
PKS 1148−001, also known as UM 458 and 4C −00.47, is a quasar in the constellation of Virgo. It has a measured redshift of approximately 1.98, placing it at a cosmological distance of roughly 10 billion light-years from Earth, depending on the cosmological parameters used.[1]
PKS 1148−001 is classified as a radio-loud quasar and is a variable extragalactic radio source. High-resolution radio observations have revealed compact structure and a one-sided jet associated with the source.
Radio structure
Observations using interplanetary scintillation and very-long-baseline interferometry found that the radio source associated with PKS 1148−001 has an apparent angular size of approximately 0.1 arcsecond.[2]
Very-long-baseline observations have also detected a one-sided jet on milliarcsecond scales. The asymmetry of the observed jet is consistent with relativistic effects affecting emission from an active galactic nucleus. Radio jets in quasars are produced by material associated with an accreting supermassive black hole and can extend far beyond the central region of the host galaxy.[3]
See also
- Quasar
- Radio-loud quasar
- Blazar
- Active galactic nucleus
- Supermassive black hole
References
- ↑ "Your NED Search Results". NASA/IPAC Extragalactic Database. Retrieved 2 August 2026.
- ↑ Venugopal, V. R.; Ananthakrishnan, S.; Swarup, G.; Pynzar, A. V.; Udaltsov, V. A. (1 August 1985). "Structure of PKS 1148-001". Monthly Notices of the Royal Astronomical Society. 215 (4): 685–689. doi:10.1093/mnras/215.4.685.
- ↑ Kellermann, K. I.; Kovalev, Y. Y.; Lister, M. L.; Homan, D. C.; Kadler, M.; Cohen, M. H.; Ros, E.; Zensus, J. A.; Vermeulen, R. C.; Aller, M. F.; Aller, H. D. (10 October 2007). "Doppler boosting, superluminal motion, and the kinematics of AGN jets". Astrophysics and Space Science. 311 (1–3): 231–239. arXiv:0708.3219. Bibcode:2007Ap&SS.311..231K. doi:10.1007/s10509-007-9622-5.
