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Time-resolved turbulent dynamo in a laser plasma.
Bott AFA, Tzeferacos P, Chen L, Palmer CAJ, Rigby A, Bell AR, Bingham R, Birkel A, Graziani C, Froula DH, Katz J, Koenig M, Kunz MW, Li C, Meinecke J, Miniati F, Petrasso R, Park HS, Remington BA, Reville B, Ross JS, Ryu D, Ryutov D, Séguin FH, White TG, Schekochihin AA, Lamb DQ, Gregori G. Bott AFA, et al. Proc Natl Acad Sci U S A. 2021 Mar 16;118(11):e2015729118. doi: 10.1073/pnas.2015729118. Proc Natl Acad Sci U S A. 2021. PMID: 33729988 Free PMC article.
However, the same framework proposes that the fluctuation dynamo should operate differently when [Formula: see text], the regime relevant to many astrophysical environments such as the intracluster medium of galaxy clusters. This paper reports an experiment that creates a …
However, the same framework proposes that the fluctuation dynamo should operate differently when [Formula: see text], the regime rele …
Mapping the self-generated magnetic fields due to thermal Weibel instability.
Zhang C, Wu Y, Sinclair M, Farrell A, Marsh KA, Petrushina I, Vafaei-Najafabadi N, Gaikwad A, Kupfer R, Kusche K, Fedurin M, Pogorelsky I, Polyanskiy M, Huang CK, Hua J, Lu W, Mori WB, Joshi C. Zhang C, et al. Proc Natl Acad Sci U S A. 2022 Dec 13;119(50):e2211713119. doi: 10.1073/pnas.2211713119. Epub 2022 Dec 5. Proc Natl Acad Sci U S A. 2022. PMID: 36469770 Free PMC article.
The origin of the seed magnetic field that is amplified by the galactic dynamo is an open question in plasma astrophysics. Aside from primordial sources and the Biermann battery mechanism, plasma instabilities have also been proposed as a possible source of seed mag …
The origin of the seed magnetic field that is amplified by the galactic dynamo is an open question in plasma astrophysics. Aside from …
The origin, evolution and signatures of primordial magnetic fields.
Subramanian K. Subramanian K. Rep Prog Phys. 2016 Jul;79(7):076901. doi: 10.1088/0034-4885/79/7/076901. Epub 2016 May 31. Rep Prog Phys. 2016. PMID: 27243368
An intriguing possibility is that these observed magnetic fields are a relic from the early universe, albeit one which has been subsequently amplified and maintained by a dynamo in collapsed objects. We review here the origin, evolution and signatures of primordial magneti …
An intriguing possibility is that these observed magnetic fields are a relic from the early universe, albeit one which has been subsequently …
Generation of scaled protogalactic seed magnetic fields in laser-produced shock waves.
Gregori G, Ravasio A, Murphy CD, Schaar K, Baird A, Bell AR, Benuzzi-Mounaix A, Bingham R, Constantin C, Drake RP, Edwards M, Everson ET, Gregory CD, Kuramitsu Y, Lau W, Mithen J, Niemann C, Park HS, Remington BA, Reville B, Robinson AP, Ryutov DD, Sakawa Y, Yang S, Woolsey NC, Koenig M, Miniati F. Gregori G, et al. Nature. 2012 Jan 25;481(7382):480-3. doi: 10.1038/nature10747. Nature. 2012. PMID: 22281596
The standard model for the origin of galactic magnetic fields is through the amplification of seed fields via dynamo or turbulent processes to the level consistent with present observations. ...Driven by geometrical asymmetries in shocks associated with the collapse of pro …
The standard model for the origin of galactic magnetic fields is through the amplification of seed fields via dynamo or turbulent pro …
Laboratory evidence of Weibel magnetogenesis driven by temperature gradient using three-dimensional synchronous proton radiography.
Zhao Z, He S, An H, Lei Z, Xie Y, Yuan W, Jiao J, Zhou K, Zhang Y, Ye J, Xie Z, Xiong J, Fang Z, He X, Wang W, Zhou W, Zhang B, Zhu S, Qiao B. Zhao Z, et al. Sci Adv. 2024 Apr 5;10(14):eadk5229. doi: 10.1126/sciadv.adk5229. Epub 2024 Apr 3. Sci Adv. 2024. PMID: 38569034 Free PMC article.
The origin of the cosmic magnetic field remains an unsolved mystery, relying not only on specific dynamo processes but also on the seed field to be amplified. Recently, the diffuse radio emission and Faraday rotation observations reveal that there has been a microgauss-lev …
The origin of the cosmic magnetic field remains an unsolved mystery, relying not only on specific dynamo processes but also on the se …
Powering biomedical devices with body motion.
Romero E, Warrington RO, Neuman MR. Romero E, et al. Annu Int Conf IEEE Eng Med Biol Soc. 2010;2010:3747-50. doi: 10.1109/IEMBS.2010.5627542. Annu Int Conf IEEE Eng Med Biol Soc. 2010. PMID: 21096868
Energy harvesting from body motion is an alternative power source that can be used to energize miniature electronic biomedical devices. This technology can make it possible to recharge batteries to reduce the frequency of or eliminate surgeries to replace depleted cells. . …
Energy harvesting from body motion is an alternative power source that can be used to energize miniature electronic biomedical devices. This …
Generation of primordial magnetic fields on linear overdensity scales.
Naoz S, Narayan R. Naoz S, et al. Phys Rev Lett. 2013 Aug 2;111(5):051303. doi: 10.1103/PhysRevLett.111.051303. Epub 2013 Jul 29. Phys Rev Lett. 2013. PMID: 23952384
Residual free electrons left over after recombination tap into this vorticity to generate magnetic field via the Biermann battery process. Although the battery operates even in the absence of any relative velocity between dark matter and gas at the time of recombina …
Residual free electrons left over after recombination tap into this vorticity to generate magnetic field via the Biermann battery pro …
[La radiologie est entree avant l'electricite dans les hopitaux de Paris].
Pallardy G. Pallardy G. Hist Sci Med. 1999 Oct-Dec;33(4):333-42. Hist Sci Med. 1999. PMID: 11625611 French.
The solutions found to ensure the running of the indispensable high tension generators in the two hospitals without electricity are evoked: first, a hand operated electrostatic machine, then an induction coil energized by an accumulator battery that had to be recharched ou …
The solutions found to ensure the running of the indispensable high tension generators in the two hospitals without electricity are evoked: …
Experimental evidence for a transient Tayler instability in a cylindrical liquid-metal column.
Seilmayer M, Stefani F, Gundrum T, Weier T, Gerbeth G, Gellert M, Rüdiger G. Seilmayer M, et al. Phys Rev Lett. 2012 Jun 15;108(24):244501. doi: 10.1103/PhysRevLett.108.244501. Epub 2012 Jun 11. Phys Rev Lett. 2012. PMID: 23004276
The TI has been discussed as a possible ingredient of the solar dynamo mechanism and a source of the helical structures in cosmic jets. It is also considered as a size-limiting factor for liquid metal batteries. We report on a liquid metal TI experiment using a cyli …
The TI has been discussed as a possible ingredient of the solar dynamo mechanism and a source of the helical structures in cosmic jet …