An anomalous concentration of QSOs around NGC 3079

Simple item page
dc.creatorBurbidge, E. M.
dc.creatorBurbidge, G.
dc.creatorArp, H. C.
dc.creatorNapier, W. M.
dc.date2005-10-28
dc.date.accessioned2026-07-07T06:44:04Z
dc.date.available2026-07-07T06:44:04Z
dc.descriptionIt is shown that there are at least 21 QSOs within 1 degree of the nearby active spiral galaxy NGC3079. Many of them are bright (mag<18) so that the surface density of those closer than 15 arc minutes to the galaxy centre is close to 100 times the average in the field. The probability that this is an accidental configuration is shown to be less or equal to one in a million. Discovery selection effects and microlensing fail by a large factor to explain the phenomenon, suggesting that the QSOs may lie in the same physical space as NGC3079. However, two of them make up the apparently lensed pair 0957+561A, B whose lensing galaxy lies at z=0.355. This problem is discussed in the concluding section.
dc.description5 pages, 4 figures, 2 tables
dc.identifierhttps://arxiv.org/abs/astro-ph/0510815
dc.identifierhttp://arxiv.org/abs/astro-ph/0510815
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/102654
dc.subjectAstrophysics
dc.titleAn anomalous concentration of QSOs around NGC 3079
dc.typetext

Files

Collections

arXiv