https://doi.org/10.1140/epja/i2014-14007-0
Regular Article - Theoretical Physics
Explosive nucleosynthesis at strong magnetic field
1
Physics Department, Taras Shevchenko National University of Kiev, UA-03022, Bielefeld, Ukraine
2
Physics Department, Bielefeld University, D-33615, Bielefeld, Germany
* e-mail: vkondrat@i.ua
Received:
20
September
2013
Revised:
29
November
2013
Accepted:
11
December
2013
Published online:
30
January
2014
The effect of a strong magnetic field on the synthesis of chemical elements is considered at conditions of nuclear statistical equilibrium. The possibility to employ the produced radionuclides to probe the transient ultra-magnetized astrophysical plasma in supernovae and near neutron stars is analyzed. For iron group nuclides the magnetic modification of the nuclear structure shifts a maximum of nucleosynthesis products towards smaller mass numbers approaching titanium. Signals of 44Ti radioactive decay in the gamma-spectra of the supernova remnant Cassiopeia A are revealed from the Integral IBIS/ISGRI observational data. The determined gamma-ray fluxes for 44Sc* lines with energies 67.9keV and 78.4keV correspond to the initial 44Ti volume (3.3 −0.7 +0.9 ) × 10−4 solar masses that corroborates the magnetic enhancement of isotope production at a field constrained on conditions of supernova explosion.
© SIF, Springer-Verlag Berlin Heidelberg, 2014