GBT14B-056

The H2O MM sources NGC3079 and NGC4258 at high resolution

Abstract

NGC3079 and NGC4258 are the strongest nearby H2O MegaMaser sources that fall within the redshift observing windows of RadioAstron. Observations at higher resolutions than provided by terrestrial baselines will determine the highest brightness temperatures of masering spots in those galaxies, their spatial structure,
and the variation of the brightness temperature with resolution. This information is required for a detailed understanding of the physics of masers and the conditions for forming maser spots.

Investigators

Name Institution
Andrey Sobolev Ural Federal University
Sergey Parfenov Ural Federal University
Jim Moran Harvard University; Center for Astrophysics | Harvard & Smithsonian
Hiroshi Imai Kagoshima University
Chris Henkel Max-Planck-Institut für Radioastronomie
Tao An Shanghai Astronomical Observatory, CAS
Alexey Alakoz Lebedev Physical Institute
Willem Baan * Netherlands Institute for Radio Astronomy

* indicates the PI