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pro vyhledávání: '"Dumin, Yurii V"'
Autor:
Dumin, Yurii V., Somov, Boris V.
Solar flares - which are the most prominent manifestation of the solar activity - typically manifest themselves as a single or a set of luminous arcs (magnetic flux tubes) rooted in regions of opposite polarity in the photosphere. However, a careful
Externí odkaz:
http://arxiv.org/abs/2309.16417
Starting from the beginning of their research in the early 2000's, the ultracold plasmas were considered as a promising tool to achieve considerable values of the Coulomb coupling parameter for electrons. Unfortunately, this was found to be precluded
Externí odkaz:
http://arxiv.org/abs/2308.15967
Publikováno v:
Physics of Plasmas, v.29, p.113506 (2022)
Ultracold plasmas are a promising candidate for the creation of strongly-coupled Coulomb systems. Unfortunately, the values of the coupling parameter Gamma_e actually achieved after photoionization of the neutral atoms remain relatively small because
Externí odkaz:
http://arxiv.org/abs/2204.00844
Publikováno v:
Physica D 436 (2022) 133320
The so-called "anemone" solar flares are an interesting type of the space plasma phenomena, where multiple null points of the magnetic field are connected with each other and with the magnetic sources by the separators, thereby producing the complex
Externí odkaz:
http://arxiv.org/abs/2111.06730
Autor:
Dumin, Yurii V.
The problem of solar corona heating remains one of key puzzles in astrophysics for a few decades; but none of the proposed mechanisms can give a definitive answer to this question. As a result, the novel scenarios are still suggested. Here, we perfor
Externí odkaz:
http://arxiv.org/abs/2002.08624
Autor:
Dumin, Yurii V., Somov, Boris V.
The chromospheric anemone microflares (AMF) are the transient solar phenomena whose emission regions have a multi-ribbon configuration. As distinct from the so-called "atypical" solar flares, also possessing a few ribbons, the temporal and spatial sc
Externí odkaz:
http://arxiv.org/abs/1904.09439
Autor:
Dumin, Yurii V.
It is commonly recognized now that Dark Energy (Lambda-term) is of crucial importance both at the early (inflationary) stage of cosmological evolution and at the present time. However, little is known about its nature and origin till now. In particul
Externí odkaz:
http://arxiv.org/abs/1805.05782
Autor:
Dumin, Yurii V.
One of hot topics in the last years is a systematic discrepancy in the determination of Hubble parameter by various methods. Namely, the values derived "directly" from the distance scale based on Cepheids and supernovae--and referring to the relative
Externí odkaz:
http://arxiv.org/abs/1804.00562
Autor:
Dumin, Yurii V.
Publikováno v:
Gravitation and Cosmology (Springer), vol.24, no.2, p.171 (2018)
An exact determination of the Hubble constant remains one of key problems in cosmology for almost a century. However, its modern values derived by various methods still disagree from each other by almost 10%; the greater values being obtained by meas
Externí odkaz:
http://arxiv.org/abs/1712.09340
Autor:
Dumin, Yurii V., Somov, Boris V.
Publikováno v:
Research Notes of the American Astronomical Society, Vol. 1, No. 1, Article Id. 15 (2017)
We report on observation of the unusual kind of solar microflares, presumably associated with the so-called "topological trigger" of magnetic reconnection, which was theoretically suggested long time ago by Gorbachev et al. (Sov. Ast. 1988, v.32, p.3
Externí odkaz:
http://arxiv.org/abs/1711.03140