RXJ 0921+4529: A Binary Quasar or a Gravitational Lens?

Bibcode
2010ApJ...721L.139P
DOI
10.1088/2041-8205/721/2/L139
Popović, L. Č.; Moiseev, A. V.; Mediavilla, E.; Jovanović, P.; Ilić, D.; Kovačević, J.; Muñoz, J. A.
Referencia bibliográfica

The Astrophysical Journal Letters, Volume 721, Issue 2, pp. L139-L142 (2010).

Fecha de publicación:
10
2010
Número de autores
7
Número de autores del IAC
1
Número de citas
5
Número de citas referidas
4
Descripción
We report the new spectroscopic observations of the gravitational lens RXJ 021+4529 with the multi-mode focal reducer SCORPIO of the SAO RAS 6 m telescope. The new spectral observations were compared with the previously observed spectra of components A and B of RXJ 0921+4529, i.e., the same components observed in different epochs. We found a significant difference in the spectrum between the components that cannot be explained with microlensing and/or spectral variation. We conclude that RXJ 0921+4529 is a binary quasar system, where redshifts of quasars A and B are 1.6535 ± 0.0005 and 1.6625 ± 0.0015, respectively.
Proyectos relacionados
Imagen del Proyecto
Astrofísica Relativista y Teórica
El estudio de las lentes gravitatorias proporciona poderosas herramientas en Astrofísica y Cosmología. Las principales aplicaciones de las lentes gravitatorias en las que se centra este proyecto son las siguientes: (i) estudiar la presencia de subestructura de materia obscura en las galaxias lente a partir de las anomalías en la magnificación de
Evencio
Mediavilla Gradolph
En ejecución
Tipo
Con árbitro
Cosmología y Astropartículas (CYA)
Galaxias
Cuásares

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