Generation of scaled protogalactic seed magnetic fields in laser-produced shock waves

G. Gregori, A. Ravasio, C. D. Murphy, K. Schaar, A. Baird, A.R. Bell, A. Benuzzi-Mounaix, R. Bingham, C. Constantin, R. P. Drake, M. Edwards, E.T. Everson, C.D. Gregory, Y. Kuramitsu, W. Lau, J. Mithen, C. Niemann, H.-S Park, B.A. Remington, B. Reville & 7 others A.P.L. Robinson, D.D. Ryutov, Y. Sakawa, S. Yang, N.C. Woolsey, M. Koenig, F. Miniati

Research output: Contribution to journalLetter

78 Citations (Scopus)

Abstract

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 observations1–3. Although other mechanisms may also operate4,5, currents from
misaligned pressure and temperature gradients (the Biermann battery process) inevitably accompany the formation of galaxies in the absence of a primordial field. Driven by geometrical asymmetries in shocks6 associated with the collapse of protogalactic structures, the Biermann battery is believed to generate tiny seed fields to a level of about 10221 gauss (refs 7, 8). With the advent of high-power laser systems in the past two decades, a new area of research has opened in which, using simple scaling relations9,10, astrophysical environments can effectively be reproduced in the laboratory11,12. Here we report the results of an experiment that produced seed magnetic fields by the Biermann battery effect. We show that these results can be scaled to the intergalactic medium, where turbulence, acting on timescales of around 700 million years, can amplify the seed fields13,14 sufficiently to affect galaxy evolution.
Original languageEnglish
Pages (from-to)480-483
Number of pages4
JournalNature
Volume481
Early online date25 Jan 2012
DOIs
Publication statusPublished - 26 Jan 2012

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shock waves
seeds
electric batteries
magnetic fields
lasers
galaxies
interstellar magnetic fields
intergalactic media
pressure gradients
high power lasers
temperature gradients
astrophysics
turbulence
asymmetry
scaling

Keywords

  • criteria
  • magnetohydrodynamics
  • turbulence
  • experimental astrophysics
  • galaxies
  • laboratory simulations
  • scaled
  • protogalactic seed
  • magnetic fields
  • laser-produced
  • shock waves

Cite this

Gregori, G., Ravasio, A., Murphy, C. D., Schaar, K., Baird, A., Bell, A. R., ... Miniati, F. (2012). Generation of scaled protogalactic seed magnetic fields in laser-produced shock waves. Nature, 481, 480-483. https://doi.org/10.1038/nature10747
Gregori, G. ; Ravasio, A. ; Murphy, C. D. ; Schaar, K. ; Baird, A. ; Bell, A.R. ; Benuzzi-Mounaix, A. ; Bingham, R. ; Constantin, C. ; Drake, R. P. ; Edwards, M. ; Everson, E.T. ; Gregory, C.D. ; Kuramitsu, Y. ; Lau, W. ; Mithen, J. ; Niemann, C. ; Park, H.-S ; Remington, B.A. ; Reville, B. ; Robinson, A.P.L. ; Ryutov, D.D. ; Sakawa, Y. ; Yang, S. ; Woolsey, N.C. ; Koenig, M. ; Miniati, F. / Generation of scaled protogalactic seed magnetic fields in laser-produced shock waves. In: Nature. 2012 ; Vol. 481. pp. 480-483.
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title = "Generation of scaled protogalactic seed magnetic fields in laser-produced shock waves",
abstract = "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 observations1–3. Although other mechanisms may also operate4,5, currents frommisaligned pressure and temperature gradients (the Biermann battery process) inevitably accompany the formation of galaxies in the absence of a primordial field. Driven by geometrical asymmetries in shocks6 associated with the collapse of protogalactic structures, the Biermann battery is believed to generate tiny seed fields to a level of about 10221 gauss (refs 7, 8). With the advent of high-power laser systems in the past two decades, a new area of research has opened in which, using simple scaling relations9,10, astrophysical environments can effectively be reproduced in the laboratory11,12. Here we report the results of an experiment that produced seed magnetic fields by the Biermann battery effect. We show that these results can be scaled to the intergalactic medium, where turbulence, acting on timescales of around 700 million years, can amplify the seed fields13,14 sufficiently to affect galaxy evolution.",
keywords = "criteria, magnetohydrodynamics, turbulence, experimental astrophysics, galaxies, laboratory simulations, scaled , protogalactic seed, magnetic fields, laser-produced, shock waves",
author = "G. Gregori and A. Ravasio and Murphy, {C. D.} and K. Schaar and A. Baird and A.R. Bell and A. Benuzzi-Mounaix and R. Bingham and C. Constantin and Drake, {R. P.} and M. Edwards and E.T. Everson and C.D. Gregory and Y. Kuramitsu and W. Lau and J. Mithen and C. Niemann and H.-S Park and B.A. Remington and B. Reville and A.P.L. Robinson and D.D. Ryutov and Y. Sakawa and S. Yang and N.C. Woolsey and M. Koenig and F. Miniati",
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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, H-S, Remington, BA, Reville, B, Robinson, APL, Ryutov, DD, Sakawa, Y, Yang, S, Woolsey, NC, Koenig, M & Miniati, F 2012, 'Generation of scaled protogalactic seed magnetic fields in laser-produced shock waves', Nature, vol. 481, pp. 480-483. https://doi.org/10.1038/nature10747

Generation of scaled protogalactic seed magnetic fields in laser-produced shock waves. / Gregori, G.; Ravasio, A.; Murphy, C. D.; Schaar, K.; Baird, A.; Bell, A.R.; Benuzzi-Mounaix, A.; Bingham, R.; Constantin, C.; Drake, R. P.; Edwards, M.; Everson, E.T. ; Gregory, C.D. ; Kuramitsu, Y.; Lau, W.; Mithen, J.; Niemann, C.; Park, H.-S; Remington, B.A.; Reville, B.; Robinson, A.P.L.; Ryutov, D.D.; Sakawa, Y.; Yang, S.; Woolsey, N.C.; Koenig, M.; Miniati, F.

In: Nature, Vol. 481, 26.01.2012, p. 480-483.

Research output: Contribution to journalLetter

TY - JOUR

T1 - Generation of scaled protogalactic seed magnetic fields in laser-produced shock waves

AU - Gregori, G.

AU - Ravasio, A.

AU - Murphy, C. D.

AU - Schaar, K.

AU - Baird, A.

AU - Bell, A.R.

AU - Benuzzi-Mounaix, A.

AU - Bingham, R.

AU - Constantin, C.

AU - Drake, R. P.

AU - Edwards, M.

AU - Everson, E.T.

AU - Gregory, C.D.

AU - Kuramitsu, Y.

AU - Lau, W.

AU - Mithen, J.

AU - Niemann, C.

AU - Park, H.-S

AU - Remington, B.A.

AU - Reville, B.

AU - Robinson, A.P.L.

AU - Ryutov, D.D.

AU - Sakawa, Y.

AU - Yang, S.

AU - Woolsey, N.C.

AU - Koenig, M.

AU - Miniati, F.

PY - 2012/1/26

Y1 - 2012/1/26

N2 - 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 observations1–3. Although other mechanisms may also operate4,5, currents frommisaligned pressure and temperature gradients (the Biermann battery process) inevitably accompany the formation of galaxies in the absence of a primordial field. Driven by geometrical asymmetries in shocks6 associated with the collapse of protogalactic structures, the Biermann battery is believed to generate tiny seed fields to a level of about 10221 gauss (refs 7, 8). With the advent of high-power laser systems in the past two decades, a new area of research has opened in which, using simple scaling relations9,10, astrophysical environments can effectively be reproduced in the laboratory11,12. Here we report the results of an experiment that produced seed magnetic fields by the Biermann battery effect. We show that these results can be scaled to the intergalactic medium, where turbulence, acting on timescales of around 700 million years, can amplify the seed fields13,14 sufficiently to affect galaxy evolution.

AB - 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 observations1–3. Although other mechanisms may also operate4,5, currents frommisaligned pressure and temperature gradients (the Biermann battery process) inevitably accompany the formation of galaxies in the absence of a primordial field. Driven by geometrical asymmetries in shocks6 associated with the collapse of protogalactic structures, the Biermann battery is believed to generate tiny seed fields to a level of about 10221 gauss (refs 7, 8). With the advent of high-power laser systems in the past two decades, a new area of research has opened in which, using simple scaling relations9,10, astrophysical environments can effectively be reproduced in the laboratory11,12. Here we report the results of an experiment that produced seed magnetic fields by the Biermann battery effect. We show that these results can be scaled to the intergalactic medium, where turbulence, acting on timescales of around 700 million years, can amplify the seed fields13,14 sufficiently to affect galaxy evolution.

KW - criteria

KW - magnetohydrodynamics

KW - turbulence

KW - experimental astrophysics

KW - galaxies

KW - laboratory simulations

KW - scaled

KW - protogalactic seed

KW - magnetic fields

KW - laser-produced

KW - shock waves

U2 - 10.1038/nature10747

DO - 10.1038/nature10747

M3 - Letter

VL - 481

SP - 480

EP - 483

JO - Nature

JF - Nature

SN - 0028-0836

ER -

Gregori G, Ravasio A, Murphy CD, Schaar K, Baird A, Bell AR et al. Generation of scaled protogalactic seed magnetic fields in laser-produced shock waves. Nature. 2012 Jan 26;481:480-483. https://doi.org/10.1038/nature10747