Variability of the Radio Nucleus of the Galaxy M81

Preprint

2 September 1997

preprint
Published by arXiv in arXiv

Abstract

M81 is the nearest galaxy with an active galactic nucleus, with the possibly exception of Cen A. The nucleus is exceptionally compact. Here we present results from new VLA and VLBI observations of the nucleus of M81. The VLA shows that its flux density is variable by 50% on a timescale of weeks. The spectral index is also somewhat variable on the same timescale. The VLBI imaging results show that there is structure on scales <0.5 mas, and that this structure is variable, also on a timescale of weeks.

Keywords

TIMESCALE OF WEEKS
ACTIVE GALACTIC
NEAREST GALAXY
RADIO NUCLEUS
GALAXY M81
M81 M81
VLBI
VLA

All Related Versions

Version 1, 1997-09-02, ArXiv
Version 2, 1997-09-24, ArXiv

This publication has 0 references indexed in Scilit: