Hot Matter from Exploding Black Holes

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Hot Matter from Exploding Black Holes
Joseph Kapusta Phys. Rev. Lett. 86, 1670
(2001) Ramin Daghigh and Joseph Kapusta Phys.
Rev. D 65, 064028 (2002) Phys. Rev. D 67, 044006
(2003) and to be published.
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Hawking Radiation (1974-75)
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Will the emitted particles scatter from each
other, perhaps even forming a photosphere?
ltlt
m
T
electron
H

.
scattering
re

of

chance

No

tly.
independen

emitted

gravitons

,
?

,
?
_at_
m
T
H
electron
-

m.
equilibriu
any
for

small

too
but

plasma
Rarified
s


?
e
e

Thompson
_at_
MeV

100
T
H

some-
at

followed

pions,

muons,

electrons,

of

production

Copious

Strong

Tables.

Data

Particle
in

hadrons

all
with
higher
what
T
H
at these

collisions
ion
heavy
in
ation
thermaliz
of

evidence
es.
temperature
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Relativistic viscous fluid equations assuming
steady-state, spherically symmetric flow with no
net baryon number or electric charge and
neglecting gravity
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Is there local thermal equilibrium?
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Freezeout
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How far away can an explosion be seen?
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Neutrino emission
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Observability of the Neutrino Flux
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-

Hawking
Page

holes
black

c
microscopi
by

produced
radiation

(total
lt
radiation)

background
ray
-

observed




?
lt
-
-
1
3
-
yr
pc
10
1

?
local

from

rays

gamma

diffuse
in
y
(anisotrop

(1996)
Wright
GeV)

100
-
MeV

30

EGRET
lt
-
-
1
3
yr
pc
4
0

.
?
local
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TasksAntimatter (positron,
antiproton) production.Baryon number
violation.Refined cascade simulations.New
physics such as supersymmetric particles or extra
dimensions.Detection?!
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