IAU Symposium No. 217 Recycling of Intergalactic and Interstellar Matter
نویسندگان
چکیده
منابع مشابه
The Magellanic Clouds, Past, Present and Future - A Summary of IAU Symposium No.190
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Long-baseline interferometry at optical and near-infrared wavelengths is an emerging technology which is quickly becoming a useful tool to investigate stellar atmospheres and to compare observations with models. Stellar atmosphere models have so far mainly been constrained by comparisons with stellar spectra which are integrated over the stellar disks. Interferometric observations provide spati...
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We raise the question of whether velocities of left and right circularly-polarized photons might be different (for reasons other than the well-known Faraday effect). Such a difference could manifest itself either in the time profiles of pulsed or bursting astronomical sources or in the rotation of the direction of polarization of linearly polarized radiation from them. The existing observations...
متن کاملIntergalactic Matter And Cocoons of Radio Galaxies
The cocoons surrounding powerful radio sources can be extensive if the jet that feeds the cocoon is light and supersonic. They have been shown to remain overpressured with respect to the ambient medium for most of the life time of the sources. The observed lobes of the radio sources form parts of these extensive cocoons. We show that observations of the lobes of giant radio sources allow one to...
متن کاملIntergalactic medium heating by dark matter
We derive the evolution of the energy deposition in the intergalactic medium (IGM) by dark matter (DM) decays/annihilations for both sterile neutrinos and light dark matter (LDM) particles. At z > 200 sterile neutrinos transfer a fraction fabs ∼ 0.5 of their rest mass energy into the IGM; at lower redshifts this fraction becomes < ∼ 0.3 depending on the particle mass. The LDM particles can deca...
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ژورنال
عنوان ژورنال: TRENDS IN THE SCIENCES
سال: 2004
ISSN: 1884-7080,1342-3363
DOI: 10.5363/tits.9.5_76