other query modes : |
Identifier query |
Coordinate query |
Criteria query |
Reference query |
Basic query |
Script submission |
TAP |
Output options |
Object types |
Help |
2007MNRAS.376..549M - Mon. Not. R. Astron. Soc., 376, 549-556 (2007/April-1)
Magnetic field limits and spectral variability in the Circinus galaxy H2O megamasers.
McCALLUM J.N., ELLINGSEN S.P. and LOVELL J.E.J.
Abstract (from CDS):
Rapid variability, thought to be due to interstellar scintillation, is a well-known feature of the Circinus H2 O megamasers. Our Stokes-I data show evidence for changes in the shape of the maser line spectral profiles, as well as their intensity. In addition to the rapid variations, the maser light curves also exhibit variations with a time-scale of the order of days (although our observations are too short to characterize this well). These behaviours support the hypothesis that the Circinus H2 O megamasers undergo diffractive interstellar scintillation, which has previously only been observed in pulsars and in one active galactic nucleus.
Abstract Copyright: 2007 The Authors. Journal compilation © 2007 RAS
Journal keyword(s): masers - polarization - scattering - galaxies: individual: Circinus
Simbad objects: 8
To bookmark this query, right click on this link: simbad:2007MNRAS.376..549M and select 'bookmark this link' or equivalent in the popup menu