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pro vyhledávání: '"Fahr, H. J."'
In classical thermodynamics the entropy is an extensive quantity, i.e.\ the sum of the entropies of two subsystems in equilibrium with each other is equal to the entropy of the full system consisting of the two subsystems. The extensitivity of entrop
Externí odkaz:
http://arxiv.org/abs/1810.12645
Autor:
Fahr, H. J., Heyl, M.
Publikováno v:
Naturwissenschaften 94, 2007, 709
In the more recent literature on cosmological evolutions of the universe the cosmic vacuum energy has become a non-renouncable ingredient. The cosmological constant $\Lambda$, first invented by Einstein, but later also rejected by him, presently expe
Externí odkaz:
http://arxiv.org/abs/1610.08548
Autor:
Fahr, H. -J., Heyl, M.
According to present cosmological views the energy density of CMB (Cosmic Microwave Background) photons, freely propagating through the expanding cosmos, varies proportional to 1/S^4 with S being the scale factor of the universe. This behavior is exp
Externí odkaz:
http://arxiv.org/abs/1610.05609
In the present days of modern cosmology it is assumed that the main ingredient to cosmic energy presently is vacuum energy with an energy density $\epsilon_\mathrm{vac}$ that is constant over the cosmic evolution. In this paper here we show, however,
Externí odkaz:
http://arxiv.org/abs/1412.3667
Autor:
Siewert, M., Fahr, H. -J.
Understanding the outer heliospheric interface is a major challenge, especially in the light of recent observations by the IBEX and Voyager missions. We present further details on a new required theoretical correction that has been identified as subs
Externí odkaz:
http://arxiv.org/abs/1408.6082
Autor:
Fahr, H. -J., Siewert, M.
In a series of earlier papers, we have developed expressions for ion and electron velocity distribution functions and theirvelocity moments at the passage over the solar wind termination shock. As we have shown there, with introduction of appropriate
Externí odkaz:
http://arxiv.org/abs/1408.6081
In the heliosphere, especially in the inner heliosheath, mass-, momentum-, and energy loading induced by the ionization of neutral interstellar species plays an important, but for some species, especially Helium, an underestimated role. We discuss th
Externí odkaz:
http://arxiv.org/abs/1312.2455
Publikováno v:
A&A, 454, 797-810 (2006)
A stellar wind passing through the reverse shock is deflected into the astrospheric tail and leaves the stellar system either as a sub-Alfvenic or as a super-Alfvenic tail flow. An example is our own heliosphere and its heliotail. We present an analy
Externí odkaz:
http://arxiv.org/abs/1203.5500
Though pick-up ions (PUIs) are a well known phenomenon in the inner heliosphere their phase-space distribution nevertheless is a theoretically unsettled problem. Especially the question of how pick-up ions form their suprathermal tails, extending to
Externí odkaz:
http://arxiv.org/abs/0808.0822
Autor:
Müller, H. -R., Florinski, V., Heerikhuisen, J., Izmodenov, V. V., Scherer, K., Alexashov, D., Fahr, H. -J.
Publikováno v:
Astr. Astrophys. 491, 43-51 (2008)
Modeling of the global heliosphere seeks to investigate the interaction of the solar wind with the partially ionized local interstellar medium. Models that treat neutral hydrogen self-consistently and in great detail, together with the plasma, but th
Externí odkaz:
http://arxiv.org/abs/0804.0125