93 citations · 350 across the 16 of their papers we have counts for
18 papers · 1 filter
Detecting Flaring Structures in Sagittarius A* with (Sub)Millimeter VLBI
Vincent L. Fish, Sheperd S. Doeleman, Avery E. Broderick +2
Multiwavelength monitoring observations of Sagittarius A* exhibit variability on timescales of minutes to hours, indicating emission regions localized near the event horizon. (Sub)…
Excited-state OH Masers and Supernova Remnants
Ylva M. Pihlström, Vincent L. Fish, Loránt O. Sjouwerman +3
The collisionally pumped, ground-state 1720 MHz maser line of OH is widely recognized as a tracer for shocked regions and observed in star forming regions and supernova remnants. W…
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…
OH Masers in G11.904-0.141
Vincent L. Fish
The massive star-forming region G11.904-0.141 is one of only 11 sources to show maser emission in the highly-excited 13441 MHz transition of OH. VLBA observations of the 1665, 1667…
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…