Research
activities
Modelling, observation and interpretation
of gamma-ray emission from astrophysical sources.
* Modelling gamma-ray emissions
- Elaboration of methods to identify the explosion mechanism of type Ia
supernovae
and classical novae by the observation of their gamma-ray emission, in
collaboration
with J. Isern, M. Hernanz, J. Gómez-Gomar, J. José at the
I.E.E.C. (Barcelona/Spain).
-> Prospects for
Type
Ia Supernova explosion mechanism identification with gamma rays
->
Modelling the cumulative gamma-ray emission of O-Ne novae in the
Galaxy. Study of the frequency-spatial
distribution of novae
in the Galaxy.
-> Upper limit of
the
22Na yield of galactic novae
-> Galactic 1.275
MeV
emission from ONe novae and its detectability by INTEGRAL/SPI
-> Possibility of
the detection of classical novae with the shield of the INTEGRAL-spectrometer SPI
-> Galactic
distribution
of 1.275 MeV emission from O-Ne novae
-> Talk "Observation
de l'émission gamma des novae" (March, 5, 1999 - I.A.P).
-> Search for
prompt gamma-ray emission from novae with BAT/Swift
- Modelling the 2.2 MeV emission from astrophysical sources.
Collaboration with Nidhal Guessoum (American University of Sharjah,
UAE).
-> Neutron
capture
and 2.2 MeV emission in the atmosphere of the secondary of an X-ray
binary
- Modelling of the positron-electron annihilation emission in the
Galaxy
-> Spectral
distribution of the positron-electron annihilation emission
-> Study of
the spectral characteristics of the annihilation emission in the
Galactic bulge
-> Production of
positrons by dark matter particles
-> Production
of positrons in microquasars
-> Transport of positrons in
the interstellar
medium
* Instrumentation
- Study and modelling of instrumental background of existing Ge
gamma-ray spectrometer (HEXAGONE, HIREGS, GRIS).
An estimation of the HIREGS Ge spectrometer
background
- Active participation in the conception and the optimization of the
performances
of the futur INTEGRAL
observatory spectrometer SPI
(E.S.A. M2 mission).
Some estimations of the performances of SPI
- Participation in the conception of the first gamma-ray lens for
nuclear astrophysics - CLAIRE project.
- Estimation of the performances of a Compton-Telescope made with Ge
detectors
-> Abstract
see also : S.E. Boggs and P. Jean papers in the list of publication
- Performance estimation of the CHAMPAGNE experiment (unfortunatly
cancelled) which would be aboard of the futur ROSETTA spacecraft (E.S.A.
corner stone) and would measure the gamma-ray line intensity
emitted by a cometary nucleus in collaboration with C. d'Uston and
O. Gasnault (C.E.S.R.)
- Participation in the conception of a Laue diffraction lens for
nuclear astrophysics - MAX
- Participation in the conception of the Gamma-ray Imager - GRI
- Participation in the Compton Spectrometer and Imager (-> COSI at IRAP)
- Participation in the Cerenkov
Telescope Array project (-> NectarCAM)
* Gamma-ray observation of cosmic-sources
- Search for keV-MeV gamma-ray emission of classical novae with :
+ BATSE, in collaboration
with M. Hernanz (I.E.E.C), D.M.
Smith
(S.S.L.), G. Fishman (NASA/MSFC)...
+ COMPTEL, in collaboration
with
A. Iyudin (MPE/Garching),
J. Knoedlseder (IRAP), M. Hernanz (I.E.E.C)...
+ BAT/Swift, in
collaboration with G.K. Skinner (GSFC/Nasa), F. Senziani, M. Hernanz (I.E.E.C).
- Observation and analysis of high-energy gamma-ray (>100 MeV) emissions from classical and symbiotic novae with LAT-Fermi (e.g. V407 Cyg)
- Observation of >100 MeV gamma-ray emissions from nearby galaxies
with LAT-Fermi
- Analysis of SPI data
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Contact: e-mail: pjean@irap.omp.eu