595 citations · 6.9k across the 158 of their papers we have counts for
11 papers · 2 filters
The Structure of the Cold Neutral ISM on 10-100 Astronomical Unit Scales
M. D. Faison, W. M. Goss
We have used the Very Long Baseline Array (VLBA) and the Very Large Array (VLA) to image Galactic neutral hydrogen in absorption towards four compact extragalactic radio sources wi…
Radio Variability of Sagittarius A* - A 106 Day Cycle
Jun-Hui Zhao, G. C. Bower, W. M. Goss
We report the presence of a 106-day cycle in the radio variability of Sgr A* based on an analysis of data observed with the Very Large Array (VLA) over the past 20 years. The pulse…
Proper Motion Measurements with the VLA: I. Wide-field Imaging and Pulse Gating Techniques
R. S. McGary, W. F. Brisken, A. S. Fruchter +2
The pulsar velocity distribution provides information about the binary history of pulsar progenitors as well as asymmetries of the supernova events in which pulsars are born. Studi…
Parallax and Kinematics of PSR B0919+06 from VLBA Astrometry and Interstellar Scintillometry
S. Chatterjee, J. M. Cordes, T. J. W. Lazio +3
Results are presented from a long-term astrometry program on PSR B0919+06 using the NRAO Very Long Baseline Array. With ten observations (seven epochs) between 1994--2000, we measu…
WSRT and VLA Observations of the 6 cm and 2 cm lines of H2CO in the direction of W 58 C1(ON3) and W 58 C2
H. R. Dickel, W. M. Goss, C. G. De Pree
Absorption in the J{K-K+} = 2{11}-2{12} transition of formaldehyde at 2 cm towards the ultracompact HII regions C1 and C2 of W 58 has been observed with the VLA with an angular res…
Power Spectrum of the density of cold atomic gas in the Galaxy towards Cas A and Cygnus A
A. A. Deshpande, K. S. Dwarakanath, W. M. Goss
We have obtained the power spectral description of the density and opacity fluctuations of the cold HI gas in the Galaxy towards Cas A, and Cygnus A. We have employed a method of d…
The location of the dense and ionized gas in the NGC 2023 PDR
F. Wyrowski, C. M. Walmsley, W. M. Goss +1
The VLA and the BIMA array were used to obtain high resolution (10-20") observations of C+, traced by the C91a recombination line at 8.6 GHz, and the dense molecular gas, traced by…
Measurement of the Parallax of PSR B0950+08 Using the VLBA
Walter F. Brisken, John M. Benson, A. J. Beasley +3
A new technique has been developed to remove the ionosphere's distorting effects from low frequency VLBI data. By fitting dispersive and non-dispersive components to the phases of…
RATAN-600 - VLA - BTA-6m ("BIG TRIO") Project: multicolour studying of distant radio galaxies
Yu. N. Parijskij, W. M. Goss, A. I. Kopylov +4
Powerful radio galaxies belong to the population of massive stellar systems that can be picked at high redshifts. With measured redshift, morphology and age determination these obj…
Starburst in the Ultra-luminous Galaxy Arp 220 - Constraints from Observations of Radio Recombination Lines and Continuum
K. R. Anantharamaiah, F. Viallefond, Niruj R. Mohan +2
We present observations of radio recombination lines from the starburst galaxy Arp 220 at 1.4, 8.1, 84, 96 and 207 GHz (sensitive upper limit for the 1.4 GHz line and firm detectio…
OH Zeeman Magnetic Field Detections Toward Five Supernova Remnants Using the VLA
C. L. Brogan, D. A. Frail, W. M. Goss +1
We have observed the OH (1720 MHz) line in five galactic SNRs with the VLA to measure their magnetic field strengths using the Zeeman effect. We detected all 12 of the bright ($S_ν…