Magnetic fields, turbulence and plasma effects in the intergalactic medium

• Grant number: 11/12909-8
• Support Opportunities: Regular Research Grants
• Duration: November 01, 2011 - October 31, 2013
• Field of knowledge: Physical Sciences and Mathematics - Astronomy - Extragalactic Astrophysics
• Principal Investigator: Diego Antonio Falceta Gonçalves
• Grantee: Diego Antonio Falceta Gonçalves
• Host Institution: Escola de Artes, Ciências e Humanidades (EACH). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

The intergalactic medium is composed by rarefied hot plasma, considered non-collisional in many cases, with complex dynamics. It is known that this plasma is also magnetized. However, the dynamics of magnetized non-collisional plasmas is not fully understood. In this work we will evaluate the role of plasma instabilities in the intergalactic medium. In particular, we will study the amplification of the magnetic energy, and the correlation lengths of the field lines, as well as the particle acceleration under these instabilities and the synchrotron and gamma emissions related. These models will be compared to the observations. Also, we will continue the study on AGN jets and their role on the dynamics of the intergalactic medium, as well as in the suppression of cooling flows. (AU)

Scientific publications

(11)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

FALCETA-GONCALVES, D.. On the theory of mass-loss in dwarf galaxies - I. Basic equations and the case of wave/thermal driven winds. Monthly Notices of the Royal Astronomical Society, v. 432, n. 1, p. 589-597, JUN 2013. (11/12909-8)

FALCETA-GONCALVES, D.; KOWAL, G.; FALGARONE, E.; CHIAN, A. C. -L.. Turbulence in the interstellar medium. Nonlinear Processes in Geophysics, v. 21, n. 3, p. 587-604, 2014. (11/12909-8, 13/04073-2)

ABRAHAM, ZULEMA; FALCETA-GONCALVES, DIEGO; BEAKLINI, PEDRO P. B.. eta CARINAE BABY HOMUNCULUS UNCOVERED BY ALMA. ASTROPHYSICAL JOURNAL, v. 791, n. 2, AUG 20 2014. (11/12909-8)

CAPRONI, A.; LANFRANCHI, G. A.; LUIZ DA SILVA, A.; FALCETA-GONCALVES, D.. THREE-DIMENSIONAL HYDRODYNAMICAL SIMULATIONS OF THE SUPERNOVAE-DRIVEN GAS LOSS IN THE DWARF SPHEROIDAL GALAXY URSA MINOR. ASTROPHYSICAL JOURNAL, v. 805, n. 2, JUN 1 2015. (15/06361-0, 09/54006-4, 11/12909-8)

FALCETA-GONCALVES, D.; MONTEIRO, H.. On the alignment of PNe and local magnetic field at the Galactic centre: magnetohydrodynamical numerical simulations. Monthly Notices of the Royal Astronomical Society, v. 438, n. 4, p. 2853-2863, MAR 2014. (11/12909-8)

SANTOS-LIMA, R.; DE GOUVEIA DAL PINO, E. M.; KOWAL, G.; FALCETA-GONCALVES, D.; LAZARIAN, A.; NAKWACKI, M. S.. MAGNETIC FIELD AMPLIFICATION AND EVOLUTION IN TURBULENT COLLISIONLESS MAGNETOHYDRODYNAMICS: AN APPLICATION TO THE INTRACLUSTER MEDIUM. ASTROPHYSICAL JOURNAL, v. 781, n. 2, FEB 1 2014. (13/18815-0, 09/54006-4, 13/15115-8, 11/12909-8, 13/04073-2, 06/50654-3, 10/50298-8, 09/50053-8)

RUIZ, L. O.; FALCETA-GONCALVES, D.; LANFRANCHI, G. A.; CAPRONI, A.. The mass-loss process in dwarf galaxies from 3D hydrodynamical simulations: the role of dark matter and starbursts. Monthly Notices of the Royal Astronomical Society, v. 429, n. 2, p. 1437-1449, FEB 2013. (11/12909-8)

ROCHA DA SILVA, G.; FALCETA-GONCALVES, D.; KOWAL, G.; DE GOUVEIA DAL PINO, E. M.. Ambient magnetic field amplification in shock fronts of relativistic jets: an application to GRB afterglows. Monthly Notices of the Royal Astronomical Society, v. 446, n. 1, p. 104-119, JAN 2015. (13/18815-0, 09/54006-4, 11/12909-8, 13/04073-2, 06/50654-3, 11/51275-4, 09/50053-8)

FALCETA-GONCALVES, D.; BONNELL, I.; KOWAL, G.; LEPINE, J. R. D.; BRAGA, C. A. S.. The onset of large-scale turbulence in the interstellar medium of spiral galaxies. Monthly Notices of the Royal Astronomical Society, v. 446, n. 1, p. 973-989, JAN 2015. (13/18815-0, 11/12909-8, 13/04073-2)

POIDEVIN, FREDERICK; FALCETA-GONCALVES, DIEGO; KOWAL, GRZEGORZ; DAL PINO, ELISABETE DE GOUVEIA; MAGALHAES, ANTONIO MARIO. MAGNETIC FIELD COMPONENTS ANALYSIS OF THE SCUPOL 850 mu m POLARIZATION DATA CATALOG. ASTROPHYSICAL JOURNAL, v. 777, n. 2, NOV 10 2013. (06/50654-3, 11/12909-8)

FALCETA-GONCALVES, D.; ABRAHAM, Z.. MHD numerical simulations of colliding winds in massive binary systems - I. Thermal versus non-thermal radio emission. Monthly Notices of the Royal Astronomical Society, v. 423, n. 2, p. 1562-1570, JUN 2012. (11/12909-8)