7 papers
Early Disk Evolution
Mark Wardle
A variety of processes play a role in the evolution of protostellar disks. Here I focus on the uncertain issue of magnetic field-disk coupling and its implications for magnetically…
Molecular Diagnostics of Supernova Remnant Shocks
J. S. Lazendic, M. Wardle, A. J. Green +2
We have undertaken a study of radio and infrared molecular-line emission towards several SNRs in order to investigate molecular signatures of SNR shocks, and to test models for OH…
Supernova OH (1720 MHz) Masers in Sgr A East, W28 and G359.1-0.5
F. Yusef-Zadeh, D. A. Roberts, G. Bower +1
A new class of OH (1720 MHz) masers unaccompanied by main-line transitions have recently been discovered (Frail, Goss and Slysh 1994). These masers lie at the interface between sup…
The Interaction of two Prominent Galactic Center Sources: Sgr A East and the Molecular Ring
F. Yusef-Zadeh, S. Stolovy, M. Burton +4
We present a synthesis of a number of recent observations in the near-IR H_2 and [Fe II] lines, OH (1720 MHz) maser line and various radio continuum measurements using the NICMOS o…
High velocity gas from the Galactic dark halo
Mark Walker, Mark Wardle
We present the germ of a new model for High Velocity Clouds, derived from the idea that the dark matter halo of our Galaxy is in the form of cold, planetary-mass gas clouds. In thi…
OH(1720 MHz) Masers at the Galactic Centre
Mark Wardle, Farhad Yusef-Zadeh, T. R. Geballe
OH(1720 MHz) masers permit direct measurements of the magnetic field strength at the Galactic Centre, and their angular broadening constrains models for the medium that scatters ra…