The interaction of cosmic rays with galactic center molecular clouds
Yusef-Zadeh, Farhad
Loading…
Permalink
https://hdl.handle.net/2142/104233
Description
Title
The interaction of cosmic rays with galactic center molecular clouds
Author(s)
Yusef-Zadeh, Farhad
Issue Date
2019-06-17
Keyword(s)
Astrochemistry and astrobiology in the age of Atacama Large Millimeter/submillimeter Array (ALMA)
Abstract
Recent observations indicate that the cosmic rate ionization rate in the Galactic center is
higher than elsewhere in the Galaxy by one to two orders of magnitudes. These measurements are
based on infrared H3+ molecular spectroscopy studies. This interaction explains the ubiquitous
warm molecular gas observed throughout the Galactic center as well as the unusual chemistry of molecular gas, as indicated by the high abundance of methanol, SiO and HCO+/HCN intensity ratios. I will present preliminary results of
two molecular line surveys of the Galactic center that we have carried out using the CSO and ALMA. In particular, we discuss the
intensity ratios of several molecular lines in the context of cosmic ray driven gas chemistry.
Use this login method if you
don't
have an
@illinois.edu
email address.
(Oops, I do have one)
IDEALS migrated to a new platform on June 23, 2022. If you created
your account prior to this date, you will have to reset your password
using the forgot-password link below.
