MY PREVIOUS AND CURRENT RESEARCH
About 20 years of experience in theoretical
particle/high-energy astrophysics
and atomic and nuclear physics.
Currently working on the models of
cosmic-ray production and propagation, particle interactions with
fields and matter, diffuse X-, and gamma rays, dark matter,
gamma-ray emission from neutron stars, black holes, and AGNs.
Work with which I have been involved has been picked up by the media
on a couple of occasions: press coverage.
Past activities include studies of details of
structure of He atom and kinetics of formation
of muonic and hadronic atoms in He
and H-He isotope mixtures,
photonuclear reactions, and
physics of hot quark-gluon matter.
See my papers on
ADS.
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last update June 17, 2008 by imos
Particle/High-Energy Astrophysics and Nuclear Physics
Galactic cosmic rays and diffuse continuum gamma rays
In collaboration with A.Strong (MPE), we are developing a GALPROP model,
a state-of-the-art numerical model and a computer
code (C++) of cosmic ray propagation in the Galaxy and production of diffuse
gamma rays. The model (and the code) is widely used as a
basis for many studies in Astrophysics, Particle Physics, and
Cosmology, such as search for Dark Matter signatures, origin of
elements, the spectrum of Galactic and extragalactic diffuse
gamma-ray emission, heliospheric modulation studies etc. The code
or its parts are used by the members of major
experimental collaborations,
such as GLAST LAT, PAMELA, ACE, AMS, BESS, HEAT and requested by hundreds of other
researchers world-wide.
In collaboration with S.G.Mashnik (LANL), we are working
on the Nuclear Cross Section Project with an
aim at the development of publicly available evaluated
libraries of the nuclear cross sections for Astrophysical applications.
more
about the GALPROP project
REFERENCES,
see also
GALPROP Web-site
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Press coverage
Interview for "New Scientist" in the article " 'Frozen' stars could shed light on dark matter" 06/2008:
html
or pdf
"CERN Courier" features our work in the article "Milagro maps out gamma-ray frontier" 06/2008:
html
or pdf
"SLAC Today" features our work in the article "Looking for New Light" 06/2008:
html
or pdf
Interview for "Grani.ru" in the article "Criticizing conclusions of Auger collaboration" 05/2008:
html
or pdf
Interview for "New Scientist" in the article "Doubt cast on source of universe's mightiest particles" 05/2008:
html
or pdf
Interview for "New Scientist" in the article "Universe's first stars may have been dark" 12/2007:
html
or pdf
Interview for "SLAC Today" in the article "By the Light of the Moon" 10/2007:
html
or pdf
"Scientific American" in the article "Glow in the Dark" 4/2007:
pdf
Interview for "SLAC Today" in the article "Hey, WIMPs: Beware of Dwarf" 3/2007:
html
or pdf
Interview for "Terra Nova" (Russian journal) in the article "Astrophysics Today" 3/2007:
html
or pdf
Interview for Finnish magazine "Tähdet ja Avaruus" (Stars and Space) 12/2006:
pdf
"SLAC Today" features our work in the article
"Gamma Rays from the Sun: A New Way for Looking at the Solar System" 10/2006:
html
or pdf
Interview for "New Scientist" in the article " 'Dark matter burners' - a new type of star?" 9/2006:
html
or pdf
see also
www.physorg.com,
www.sciencenewsdaily.org,
wordpress.com,
news.softpedia.com: html,
pdf,
www.astroseti.org,
nol.hu,
rnd.cnews.ru,
www.riasamara.ru,
www.rosinvest.com,
www.ukrindustrial.com
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Hot Quark-Gluon Matter Physics
A new state equation for the
quark-gluon matter has been proposed,
where the interaction between quarks is described by a
density-dependent "mean field". The obtained results (critical
temperature, temperature dependence of the energy density and of the
energy of an isolated quark) are in qualitative agreement with the
lattice QCD predictions.
The "threshold effect" in the inclusive
spectra of mesons has been predicted. The calculated inclusive spectra
and multiplicities of pi-, rho-, eta-mesons etc.
are in a good agreement with the experimental data on
nucleon-antinucleon annihilation at low energies.
REFERENCES
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Formation of the Muonic and Hadronic Atoms
and Details of the He Atom Structure
Muonic and hadronic atoms
I have taken part in the study of kinetics and atomic capture of
negative muons and hadrons (pions, kaons etc.) in helium and
hydrogen-helium isotope mixtures using quantum coupling equations for
the two-particle channel and ionization channels. This is of interest
for such studies as the physics of hadronic atoms, details of atomic
structure, and the muon catalized fusion.
Details of He atom structure
Together with my colleagues, I have studied the sensivity of triply
differential generalized oscillator strengths and triply differential
cross sections of ionization He(e,2e)He+ to
various models of the He atom structure in the initial and final states
using distorted waves in the first Born approximation.
REFERENCES
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