@InProceedings{AlvesJSSMSSPMSKW:2018:ReOuRa,
author = "Alves, Livia Ribeiro and Jauer, Paulo Ricardo and Silva, Ligia
Alves da and Silva, Graziela Belmira Dias da and Marchezi,
Jos{\'e} Paulo and Souza, Vitor M. and Silva, Marlos Rockenbach
da and P{\'a}dua, Marcelo Banik de and Medeiros, Cl{\'a}udia and
Sibeck, David G. and Kanekal, Shrikanth G. and Wygant, John R.",
affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {Instituto Nacional de Pesquisas
Espaciais (INPE)} and {Instituto Nacional de Pesquisas Espaciais
(INPE)} and {} and {Instituto Nacional de Pesquisas Espaciais
(INPE)} and {Instituto Nacional de Pesquisas Espaciais (INPE)} and
{Instituto Nacional de Pesquisas Espaciais (INPE)}",
title = "Relativistic outer radiation belt electrons outward diffused due
to ulf waves in the pc5 frequency range observed deep in
magnetosphere",
year = "2018",
organization = "Cospar Scientific Assembly, 42.",
abstract = "Field line resonances in the magnetic pulsations frequency range
named Pc 5 are known to be oscillations of magnetospheric field
lines. It is observed as a combination of three fundamental modes,
namely poloidal, toroidal and compressional. Such a disturbance
may have their energy sources arising from external high dynamic
pressure solar wind pulsation that induces waves in the day-side
sector magnetosphere. Also, low-frequency instabilities of the
ring current ions are candidates to promote ultra-low frequency
(ULF) waves in the Pc5 frequency range. The toroidal mode is
mainly due to upstream solar wind disturbances and it is observed
in the dawndusk flanks, while compressional and poloidal modes can
be originated from local disturbances and they can be observed
everywhere in the night side sector. On July 19, 2016, at 2309 UT,
the ground magnetometers registered a sudden impulse due to an
interplanetary coronal mass ejection (ICME) shock arrival. The
solar wind parameters registered by ACE satellite showed a sharp
increase in the density and velocity, reaching 40 cm-3 and 450
km/s, respectively. GOES15(13) satellite that was at noon-to-dusk
(dusk-to-midnight) sector noted a major (minor) increase in the
magnetic field, followed by oscillations in the horizontal
magnetic field. Data from plasma parameters measured by the
Themis-D satellite agreed that the geomagnetic field was
compressed, the results from empirical models lead to
magnetospheric standoff position compressed to 6.5 Re. In the
following, results from the instruments on board the Van Allen
Probes A, which traveled from midnight to dawn sector observed a
relativistic electron flux dropout two orders of magnitude long,
occurred throughout 3 hours following the shock arrival. The ULF
waves in a Pc5 frequency range are observed both at the location
of the satellite and on the ground, the different magnetometers
show that ULF waves reached midi-to-low latitudes with
considerable power spectral densities. Regarding the ULF waves are
known to contribute with relativistic particles outward diffusion
in the Van Allen belts, including through magnetopause shadowing
events, we investigate the ability of the different solar wind
parameters to be energy sources to generate Pc5 frequency waves in
different modes deep inside the magnetosphere.",
conference-location = "Pasadena, California",
conference-year = "14-22 July",
language = "en",
targetfile = "alves_relativistic.pdf",
urlaccessdate = "04 maio 2024"
}