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Nakwacki, M.S.; De Gouveia Dal Pino, E.M.; Kowal, G.; Santos-Lima, R. "The role of pressure anisotropy in the turbulent intracluster medium" (2012) 14th Latin American Workshop on Plasma Physics, LAWPP 2011. 370(1)
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Abstract:

In low-density plasma environments, such as the intracluster medium (ICM), the Larmour frequency is much larger than the ion-ion collision frequency. In such a case, the thermal pressure becomes anisotropic with respect to the magnetic field orientation and the evolution of the turbulent gas is more correctly described by a kinetic approach. A possible description of these collisionless scenarios is given by the so-called kinetic magnetohydrodynamic (KMHD) formalism, in which particles freely stream along the field lines, while moving with the field lines in the perpendicular direction. In this way a fluid-like behavior in the perpendicular plane is restored. In this work, we study fast growing magnetic fluctuations in the smallest scales which operate in the collisionless plasma that fills the ICM. In particular, we focus on the impact of a particular evolution of the pressure anisotropy and its implications for the turbulent dynamics of observables under the conditions prevailing in the ICM. We present results from numerical simulations and compare the results which those obtained using an MHD formalism.

Registro:

Documento: Conferencia
Título:The role of pressure anisotropy in the turbulent intracluster medium
Autor:Nakwacki, M.S.; De Gouveia Dal Pino, E.M.; Kowal, G.; Santos-Lima, R.
Ciudad:Mar del Plata
Filiación:Instituto de Astronomía, Geofísica e Ciências Atmosféricas, Universidade de São Paulo, Cidade Universitária, Rua do Matão 1226, 05508-090 São Paulo, Brazil
Instituto de Astronomía Y Física del Espacio, UBA-CONICET, 1428, Caba, Argentina
Palabras clave:Anisotropy; Collisionless plasmas; Computer hardware description languages; Magnetohydrodynamics; Fluid-like behavior; Intra-cluster medium; Ion-ion collision frequency; Low-density plasmas; Magnetic field orientations; Magnetic fluctuation; Perpendicular-plane; Pressure anisotropy; Magnetoplasma
Año:2012
Volumen:370
Número:1
DOI: http://dx.doi.org/10.1088/1742-6596/370/1/012043
Título revista:14th Latin American Workshop on Plasma Physics, LAWPP 2011
Título revista abreviado:J. Phys. Conf. Ser.
ISSN:17426588
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17426588_v370_n1_p_Nakwacki

Referencias:

  • Bonafede, A., Feretti, L., Murgia, M., Govoni, F., Giovannini, G., Vacca, V., (2010), ArXiv e-prints (Preprint 1009.1233); Schekochihin, A.A., Cowley, S.C., (2006) Physics of Plasmas, 13, p. 056501. , Preprint arXiv:astro-ph/0601246
  • Barakat, A.R., Schunk, R.W., (1982) Plasma Physics, 24, pp. 389-418
  • Krall N A and Trivelpiece A W 1973 USA: McGraw-Hill; Quest, K.B., Shapiro, V.D., (1996) Journal of Geophys. Res., 1012, pp. 24457-24470
  • Nakwacki, M.S., De Gouveia Dal Pino, E.M., Kowal, G., Santos-Lima, R., (2012), in preparation; Bogdanovíc, T., Reynolds, C.S., Massey, R., (2011) The Astrophysical Journal, 731, p. 7. , Preprint 1005.2193
  • Kowal, G., Falceta-Goņcalves, D.A., Lazarian, A., (2011) New Journal of Physics, 13, p. 053001. , Preprint 1012.5125
  • Chew, G.F., Goldberger, M.L., Low, F.E., (1956) Royal Society of London Proceedings Series A, 236, pp. 112-118
  • Kowal, G., Lazarian, A., (2010) The Astrophysical Journal, 720, pp. 742-756
  • Kowal, G., Lazarian, A., Beresnyak, A., (2007) The Astrophysical Journal, 658, pp. 423-445. , (Preprint arXiv:astro-ph/0608051)
  • Kowal, G., Lazarian, A., Vishniac, E.T., Otmianowska-Mazur, K., (2009) The Astrophysical Journal, 700, pp. 63-85. , Preprint 0903.2052
  • Falceta-Goņcalves, D., Lazarian, A., Kowal, G., (2008) The Astrophysical Journal, 679, pp. 537-551. , Preprint 0801.0279
  • Rosin, M.S., Schekochihin, A.A., Rincon, F., Cowley, S.C., (2011) MNRAS, 413, pp. 7-38. , Preprint 1002.4017
  • Schekochihin, A., Cowley, S., Kulsrud, R., Hammett, G., Sharma, P., Magnetised plasma turbulence in clusters of galaxies (2005) The Magnetized Plasma in Galaxy Evolution, pp. 86-92. , ed K T Chyzy, K Otmianowska-Mazur, M Soida, & R-J Dettmar
  • Howes, G.G., Cowley, S.C., Dorland, W., Hammett, G.W., Quataert, E., Schekochihin, A.A., (2006) The Astrophysical Journal, 651, pp. 590-614. , (Preprint arXiv:astro-ph/0511812)
  • Murgia, M., Govoni, F., Feretti, L., Giovannini, G., Dallacasa, D., Fanti, R., Taylor, G.B., Dolag, K., (2004) Astron. Astrophys., 424, pp. 429-446. , (Preprint arXiv:astro-ph/0406225)
  • Jones, T.W., Porter, D.H., Ryu, D., Cho, J., (2011) Memorie Della Societa Astronomica Italiana, 82, p. 588. , (Preprint 1101.4050)
  • Santos-Lima, R., De Gouveia Dal Pino, E.M., Lazarian, A., Kowal, G., Falceta-Goņcalves, D., Dynamo in the Intra-Cluster Medium: Simulation of CGL-MHD Turbulent Dynamo (2011) IAU Symposium, 274, pp. 482-484. , IAU Symposium (Preprint 1102.5139)
  • Santos-Lima, R., De Gouveia Dal Pino, E.M., Nakwacki, M.S., Falceta-Goņcalves, D., Lazarian, A., (2012) Kowal, , in preparationA4 - Agencia Nacional de Promocion Cientifica y Tecnologica (ANPCyT); Centro Latino-Americano de Fisica (CLAF); Comision Nacional de Energia Atomica (CNEA); Cons. Nac. Invest. Cient. Tec. (CONICET); et al.; Instituto de Fisica del Plasma (INFIP)

Citas:

---------- APA ----------
Nakwacki, M.S., De Gouveia Dal Pino, E.M., Kowal, G. & Santos-Lima, R. (2012) . The role of pressure anisotropy in the turbulent intracluster medium. 14th Latin American Workshop on Plasma Physics, LAWPP 2011, 370(1).
http://dx.doi.org/10.1088/1742-6596/370/1/012043
---------- CHICAGO ----------
Nakwacki, M.S., De Gouveia Dal Pino, E.M., Kowal, G., Santos-Lima, R. "The role of pressure anisotropy in the turbulent intracluster medium" . 14th Latin American Workshop on Plasma Physics, LAWPP 2011 370, no. 1 (2012).
http://dx.doi.org/10.1088/1742-6596/370/1/012043
---------- MLA ----------
Nakwacki, M.S., De Gouveia Dal Pino, E.M., Kowal, G., Santos-Lima, R. "The role of pressure anisotropy in the turbulent intracluster medium" . 14th Latin American Workshop on Plasma Physics, LAWPP 2011, vol. 370, no. 1, 2012.
http://dx.doi.org/10.1088/1742-6596/370/1/012043
---------- VANCOUVER ----------
Nakwacki, M.S., De Gouveia Dal Pino, E.M., Kowal, G., Santos-Lima, R. The role of pressure anisotropy in the turbulent intracluster medium. J. Phys. Conf. Ser. 2012;370(1).
http://dx.doi.org/10.1088/1742-6596/370/1/012043