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pro vyhledávání: '"Kozlovsky, B."'
We have studied the radioactive line emission expected from solar active regions after large flares, following the production of long-lived radioisotopes by nuclear interactions of flare-accelerated ions. This delayed X- and gamma-ray line emission c
Externí odkaz:
http://arxiv.org/abs/astro-ph/0604325
We discuss the highlights of our recent research, specifically the refractory vs. volatile interpretation of the rise of [O/Fe] with decreasing [Fe/H], and the issue of primary vs. secondary evolution of Be.
Comment: latex 2 pages, to be publish
Comment: latex 2 pages, to be publish
Externí odkaz:
http://arxiv.org/abs/astro-ph/0101432
Employing a Monte-Carlo based evolutionary code, we show that the delay of Fe deposition relative to O, due to the incorporation of supernova ejecta refractories in high velocity grains, can account for the rise of [O/Fe] with decreasing [Fe/H]. The
Externí odkaz:
http://arxiv.org/abs/astro-ph/0007273
By introducing a hitherto ignored Li-6 producing process, due to accelerated He-3 reactions with He-4, we show that accelerated particle interactions in solar flares produce much more Li-6 than Li-7. By normalizing our calculations to gamma-ray data
Externí odkaz:
http://arxiv.org/abs/astro-ph/0003356
We consider the three principal LiBeB evolutionary models, CRI in which the cosmic-ray source at all epochs of Galactic evolution is the average ISM, CRI+LECR in which metal enriched low energy cosmic rays (LECRs) are superimposed onto the CRI cosmic
Externí odkaz:
http://arxiv.org/abs/astro-ph/0001466
Using cosmic-ray energetics as a discriminator, we investigate evolutionary models of LiBeB. We employ a Monte Carlo code which incorporates the delayed mixing into the ISM both of the synthesized Fe, due to its incorporation into high velocity dust
Externí odkaz:
http://arxiv.org/abs/astro-ph/9909021
Publikováno v:
ApJ 504 (1998)
We have developed in detail the theory of X-ray line and continuum production due to atomic interactions of accelerated ions, incorporating in our calculations information from a broad range of laboratory measurements. We applied our calculations to
Externí odkaz:
http://arxiv.org/abs/astro-ph/9804269
We derive constraints on the cosmic rays responsible for the Be and part of the B observed in stars formed in the early Galaxy: the cosmic rays cannot be accelerated from the ISM; their energy spectrum must be relatively hard (the bulk of the nuclear
Externí odkaz:
http://arxiv.org/abs/astro-ph/9610255
Publikováno v:
Nucl.Phys. A621 (1997) 47c-51c
We present new calculations of LiBeB production by accelerated particles with various compositions and energy spectra ranging from low energies to relativistic energies, and various ambient medium metallicities ($Z/Z_\odot$). The observed, essentiall
Externí odkaz:
http://arxiv.org/abs/astro-ph/9608002
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