Enrico Ramirez - Ruiz studies stellar explosions, gamma - ray bursts and how material
accretes onto dense objects such as black holes and neutron stars.
«We find that the inner disk melt remains hot and volatile - poor as
it accretes onto the Moon.
Material is pulled from surrounding filaments and
accreted onto cores dotted along the cloud structure, converting gravitational potential energy into kinetic energy in the process.
These, the best such observations so far, reveal that the behaviour of the material being
accreted onto the black hole is very stable, and — so far — has not been disrupted by the arrival of material from the G2cloud.
Apparently the drillers had hit meltwater from the top of Lake Vostok that had slowly refrozen and
accreted onto the bottom of the overlying glacial ice sheet.
Only a tiny amount of gas is
accreting onto it.
In this theory material from the companion star is
accreted onto the white dwarf until its mass reaches a limit, leading to a dramatic explosion.
«That hot gas expands and doesn't
accrete onto the disc [that eventually forms the star],» says Harold Yorke, a member of the JPL team.
The researchers think Sgr A * may be an extremely energetic inner region of ionized gas
accreting onto a supermassive black hole.