Atomic Carbon in the Central Molecular Zone of the Milky Way : Possible Cosmic-ray Induced Chemistry or Time-Dependent Chemistry Associated with SNR Sagittarius A East

Kunihiko Tanaka, Makoto Nagai, Kazuhisa Kamegai

Being one of the most abundant atomic/molecular species observed in dense molecular gas, atomic carbon (${\mathrm{C}}^0$) is a potential good tracer of molecular gas mass in many che…