Italia and Russia at Dubna

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• Italia and Russia at Dubna
• Round Table 4
• Black Holes
• in Mathematics and Physics
• December 15-18, 2011

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Small, dark, and heavy But is it a black
hole?Trust but verify!

• Plamen Fiziev, Dmitrii Shirkov
• BLTF, JINR, Dubna

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Black Holes

• The term Black Hole in GR
• Born on 29 December 1967
  
• West Ballroom, NY Hilton Hotel
  
• by John Wheeler
• (09.06.1911-13.04.2008)
  
• 
  
  

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arXiv0901.4365v2 gr-qc Matt Visser, Black holes in general relativity Do black holes exist ?
This innocent question is more subtle than one
might expect, and the answer depends very
much on whether one is thinking as an
observational astronomer, a classical general
relativist, or a theoretical physicist.
Astronomers have certainly seen things that are
small, dark, and heavy. Classical general
relativist Eternal black holes certainly
exist mathematically. Theoretical
physicist We have not seen direct
observational evidence of the event horizon.
The mathematical solutions
suffer essential physical
shortcomings !
Visser M, Barcelo C, Liberati S, Sonego S
gr-qc/0902.0346 Small, dark, and heavy But is
it a black hole?

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Roy Patrick Kerr arXiv0706.1109, in The Kerr
Spacetime", Eds D.L. Wiltshire, M. Visser and
S.M. Scott, Cambridge Univ. Press,2009. However
, the Kruskal extension has no application to a
real black hole formed by the collapse of a
spherically symmetric body and the same is true
for Kerr. What I believe to be more likely is
that the inner event horizon never actually
forms. Many theorems have been claimed
stating that a singularity must exist if certain
conditions are satisfied, but they all make
assumptions that may not be true for collapse to
a black hole.
PRL, 28, 452 (1972)
Ya.B. Zeldovich, Phys. Lett. A 59, 254 (1976)
Zh. Eksp. Teor. Fiz. 72, 18 (1977). Proton decay
can be mediated by a virtual BH.
According to common belief, the decay/evaporation
of BHs does not conserve any global U(1)-quantum
numbers and, in particular, baryonic, B, and
leptonic, L, charges. F. C. Adams, G. Laughlin,
M. Mbonye, Phys.Rev. D 58 (1998) 083003.
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• A.A. Logunov, M. A. Mestvirishvili,
• S.S. Gershtein (2010-11),
• claim
• Hilberts Causality Principle
• Baryon Number Conservation
• and
• Equations of General Relativity
• Exclude a Possibility of the Black Hole Formation
• A TOUGH CHOICE FOR ME
• (remember Hamlets doubt)
• BLACK HOLES or Standard Conservation Laws ???
• And for YOU ???

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?
arXiv0801.2786 C.Bambi, A. D. Dolgov, and A.
A. Petrov Many production mechanisms have been
suggested, but so far no one is completely
satisfactory.
BH mimikers
George Chapline Black holes 'do not
exist These mysterious objects are dark-energy
stars, physicist claims. (march,
2005)
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 arXivhep-ph/0511217
Scott A. Hughes
Trust but verify The case for astrophysical
black holes
GW?
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M87 jet versus HH46-47 jet
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astro-ph/0803.0322 Ramesh Narayan, Jeffrey E.
McClintock
Eddington-scaled luminosities (0.510 keV) of
BH transients (filled circles) and NS transients
(open circles) versus the orbital period .
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How to see the event horizon
Detweiler S., Black holes and gravitational
waves. III - The resonant frequencies of rotating
holes, ApJ 239, 292-295, (1980).
Dreyer O., Kelly B., Krishnan B., Finn L. S.,
Garrison D., Lopez- Aleman R., Black-hole
spectroscopy testing general relativity through
gravitational-wave observations, Class. Quantum
Grav. 21, 787-803 (2004)
Chirenti C. B. M. H., Rezzolla L., How to tell a
gravastar from a black hole, CQG 24,I.16 pp.
4191-4206
PF CQG, 23, 2006. JPC, 2007 Grav-modes
using the Heun functions

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EM modes
PF, D Staicova ASS, PRD 2010-11
using the Heun functions
Kerr EM modes for primary jets
Kerr EM QNM
 
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arXiv0905.1028 astro-ph.HE
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Wolfgang Kund

arXiv0905.1028
arXiv0902.351 Critical Thoughts on
Cosmology
old yang
arXiv0911.1355
62,185 quazars
15,180 quazars
Original ApJ Lett. 674 L1-4, 2008, MASS
FUNCTIONS OF THE ACTIVE BLACK HOLES IN DISTANT
QUASARS FROM THE SLOAN DIGITAL SKY SURVEY DATA
RELEASE 3 M. Vestergaard, X. Fan, C. A.
Tremonti, Patrick S. Osmer, and Gordon T.
Richards
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Neutron Star Discovered Where a Black Hole Was
Expect (November, 2005), Westerlund 1
A very massive star collapsed to form a neutron
star and not a black hole as expected, according
results from NASA's Chandra X-ray Observatory.
This discovery shows that nature has a harder
time making black holes than previously thought.
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ArXiv0903.010
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Testing black hole no-hair theorem with OJ287,
arXiv1108.586 OJ 287 binary black hole system,
arXiv1112.1162
The light curve of the quasar OJ 287 extends from 1891 up today. The correctness of General Relativity has now been demonstrated up to the third Post-Newtonian order .
 
In


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One of the
results of Columbus expedition

• We are still
  speaking about (American)
• Indians
  who have never seen India
• 
  It was Amerigo Vespucci who first had
• 
  recognized that they have
• 
  discovered not India, but
• SOMETHING MUCH
  MORE INTERSTING
• A NEW CONTINENT
• AMERICA

?
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Thank You