BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Memento EPFL//
BEGIN:VEVENT
SUMMARY:Relativistic axions from collapsing Bose stars
DTSTART:20160704T140000
DTEND:20160704T150000
DTSTAMP:20260408T115644Z
UID:660d9962ef4d79fa37a0b7917a42886f7eb33f398d9efa920e8efb81
CATEGORIES:Conferences - Seminars
DESCRIPTION:D.G. Levkov (INR RAS)\nThe smallest-scale substructures of lig
 ht bosonic (axion-like) dark matter may Bose-condense into compact and gr
 avitationally bound Bose stars. We study collapses of the critical-mass s
 tars caused by attractive self-interaction of the axion-like particles an
 d find that these processes proceed in an  unexpected universal way. Fir
 st\, nonlinear self-similar evolution (wave collapse) forces the particle
 s to fall onto the star center. Second\, collisions in the dense center 
 create an outgoing stream of mildly  relativistic particles which carrie
 s away an essential part of the star mass. The collapse stops when the st
 ar remnant is no longer able to support the self-similar infall feeding t
 he collisions. We discuss possible astrophysical and cosmological implicat
 ions of these phenomena.
LOCATION:cubotron 727
STATUS:CONFIRMED
END:VEVENT
END:VCALENDAR