81 citations · 107 across the 3 of their papers we have counts for
5 papers · 1 filter
Using Millimeter VLBI to Constrain RIAF Models of Sagittarius A*
Vincent L. Fish, Avery E. Broderick, Sheperd S. Doeleman +1
The recent detection of Sagittarius A* at lambda = 1.3 mm on a baseline from Hawaii to Arizona demonstrates that millimeter wavelength very long baseline interferometry (VLBI) can…
Effelsberg Observations of Excited-State (6.0 GHz) OH in Supernova Remnants and W3(OH)
Vincent L. Fish, Loránt O. Sjouwerman, Ylva M. Pihlström
While masers in the 1720 MHz transition of OH are detected toward many supernova remnants (SNRs), no other OH transition is seen as a maser in SNRs. We present a search for masers…
Excited-state OH Mainline Masers in AU Geminorum and NML Cygni
Lorant O. Sjouwerman, Vincent L. Fish, Mark J. Claussen +2
Excited-state OH maser emission has previously been reported in the circumstellar envelopes of only two evolved stars: the Mira star AU Geminorum and the hypergiant NML Cygni. We p…
Structure of W3(OH) from Very High Spectral Resolution Observations of 5 Centimeter OH Masers
Vincent L. Fish, Loránt O. Sjouwerman
Recent studies of methanol and ground-state OH masers at very high spectral resolution have shed new light on small-scale maser processes. The nearby source W3(OH), which contains…
Large Magnetic Fields and Motions of OH Masers in W75 N
Vincent L. Fish, Mark J. Reid
We report on a second epoch of VLBA observations of the 1665 and 1667 MHz OH masers in the massive star-forming region W75 N. We find evidence to confirm the existence of very stro…