Journals Digest RSS

P. M. Plewa et al 2017 ApJ 840 50

The evolution of the ionized gaseous component and the dusty component of G2, a gas cloud that approached the black hole Sgr A* in the galactic center in 2014, is examined in 2015–16 after the cloud’s approach.

Piero Madau and Tassos Fragos 2017 ApJ 840 39

New calculations show that the contribution of X-ray binaries to the ionization of the bulk IGM during the epoch of reionization is negligible; direct He I photoionizations are the main source of IGM heating.

1 2 3 4 5 77