Subarcsec optical and radio obsercations of the gravitationally lensed systmen B1422 + 23.1

Autor:	S. T. Garrington, A. R. Patnaik, C. E. Akujor
Rok vydání:	2007
Předmět:	Radio map Physics Brightness I band Astrophysics::High Energy Astrophysical Phenomena Astronomy Quasar Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Nordic Optical Telescope Radio spectrum Gravitational lens Astrophysics::Galaxy Astrophysics MERLIN
Zdroj:	Nigerian Journal of Physics; Vol 18, No 2 (2006); 191-196
ISSN:	1595-0611
DOI:	10.4314/njphy.v18i2.38102
Popis:	Optical observations of the multiple-component gravitational lens candidate B1422+23.1 using the 2.5m Nordic Optical Telescope and a MERLIN image at 1658 MHz are presented. The radio image at L-band and B, V, R and I band images with a 0.6 arcsec seeing resolve the components. These observations show that the brightness ratio of the components at optical bands is similar to those at radio bands. This strengthens the case for a gravitational lens hypothesis for the source. Keywords : keyword; Gravitational lensing quasar, radio map, optical image Nigerian Journal of Physics Vol. 18 (2) 2006: pp. 191-196
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a412aace1c796316a6b7087922eef925 https://doi.org/10.4314/njphy.v18i2.38102 Zobrazit plný text záznamu