Black holes as particle accelerators: a brief review
Rapidly rotating Kerr black holes can accelerate particles to arbitrarily high energy if the
angular momentum of the particle is fine-tuned to some critical value. This phenomenon is …
angular momentum of the particle is fine-tuned to some critical value. This phenomenon is …
Upper limits of particle emission from high-energy collision and reaction<? format?> near a maximally rotating Kerr black hole
T Harada, H Nemoto, U Miyamoto - Physical Review D—Particles, Fields …, 2012 - APS
The center-of-mass energy of two particles colliding near the horizon of a maximally rotating
black hole can be arbitrarily high if the angular momentum of either of the incident particles …
black hole can be arbitrarily high if the angular momentum of either of the incident particles …
Search for gamma-ray emission from -wave dark matter annihilation in the Galactic Center
Indirect searches for dark matter through Standard Model products of its annihilation
generally assume a cross section which is dominated by a term independent of velocity (s …
generally assume a cross section which is dominated by a term independent of velocity (s …
Energetics of particle collisions near dirty rotating extremal black holes:<? format?> Banados-Silk-West effect versus Penrose process
OB Zaslavskii - Physical Review D—Particles, Fields, Gravitation, and …, 2012 - APS
If two particles collide near the horizon of a rotating extremal black hole, under certain
conditions the energy E cm in the center-of-mass frame can grow without limit (the so-called …
conditions the energy E cm in the center-of-mass frame can grow without limit (the so-called …
High energy collision of two particles in wormhole spacetimes
N Tsukamoto, C Bambi - Physical Review D, 2015 - APS
We study the collision of two particles in the Teo wormhole spacetime, in which the
wormhole is stationary and axisymmetric. We show that a nonrotating Teo wormhole cannot …
wormhole is stationary and axisymmetric. We show that a nonrotating Teo wormhole cannot …
Infinite efficiency of the collisional Penrose process: Can a overspinning Kerr geometry be the source of ultrahigh-energy cosmic rays and neutrinos?
The origin of the ultrahigh-energy particles we receive on Earth from outer space such as
EeV cosmic rays and PeV neutrinos remains an enigma. All mechanisms known to us …
EeV cosmic rays and PeV neutrinos remains an enigma. All mechanisms known to us …
GAMMA-LIGHT: high-energy astrophysics above 10 MeV
A Morselli, A Argan, G Barbiellini, W Bonvicini… - Nuclear Physics B …, 2013 - Elsevier
Gamma-Light: High-Energy Astrophysics above 10 MeV Page 1 Gamma-Light: High-Energy
Astrophysics above 10 MeV Aldo Morsellia, Andrea Arganb, Guido Barbiellinic,d, Walter …
Astrophysics above 10 MeV Aldo Morsellia, Andrea Arganb, Guido Barbiellinic,d, Walter …
Enhanced line signals from annihilating Kaluza-Klein dark matter
Monochromatic gamma ray lines have long been known to provide potential smoking-gun
signals for annihilating dark matter. Here, we demonstrate that the situation is particularly …
signals for annihilating dark matter. Here, we demonstrate that the situation is particularly …
Monochromatic neutrino lines from sneutrino dark matter
C Arina, S Kulkarni, J Silk - Physical Review D, 2015 - APS
We investigate the possibility of observing monochromatic neutrino lines originating from
annihilation of dark matter. We analyze several astrophysical sources with overdensities of …
annihilation of dark matter. We analyze several astrophysical sources with overdensities of …
Faint dark matter annihilation signals and the Milky Way's supermassive black hole
BT Chiang, SL Shapiro, J Shelton - Physical Review D, 2020 - APS
A wide range of mechanisms predict present-day s-wave dark matter (DM) annihilation cross
sections that are orders of magnitude below current experimental sensitivity. We explore the …
sections that are orders of magnitude below current experimental sensitivity. We explore the …