dor_id: 4133119

506.#.#.a: Público

590.#.#.d: Los artículos enviados a la revista "Geofísica Internacional", se juzgan por medio de un proceso de revisión por pares

510.0.#.a: Consejo Nacional de Ciencia y Tecnología (CONACyT); Scientific Electronic Library Online (SciELO); SCOPUS, Dialnet, Directory of Open Access Journals (DOAJ); Geobase

561.#.#.u: https://www.geofisica.unam.mx/

650.#.4.x: Físico Matemáticas y Ciencias de la Tierra

336.#.#.b: article

336.#.#.3: Artículo de Investigación

336.#.#.a: Artículo

351.#.#.6: http://revistagi.geofisica.unam.mx/index.php/RGI

351.#.#.b: Geofísica Internacional

351.#.#.a: Artículos

harvesting_group: RevistasUNAM

270.1.#.p: Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

590.#.#.c: Open Journal Systems (OJS)

270.#.#.d: MX

270.1.#.d: México

590.#.#.b: Concentrador

883.#.#.u: https://revistas.unam.mx/catalogo/

883.#.#.a: Revistas UNAM

590.#.#.a: Coordinación de Difusión Cultural

883.#.#.1: https://www.publicaciones.unam.mx/

883.#.#.q: Dirección General de Publicaciones y Fomento Editorial

850.#.#.a: Universidad Nacional Autónoma de México

856.4.0.u: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1242/1220

100.1.#.a: Gomberoff, L.

524.#.#.a: Gomberoff, L. (1991). The semi-cold approximation in magnetospheric and solar wind physics. Geofísica Internacional; Vol. 30 Núm. 4: Octubre 1, 1991; 225-239. Recuperado de https://repositorio.unam.mx/contenidos/4133119

245.1.0.a: The semi-cold approximation in magnetospheric and solar wind physics

502.#.#.c: Universidad Nacional Autónoma de México

561.1.#.a: Instituto de Geofísica, UNAM

264.#.0.c: 1991

264.#.1.c: 1991-10-01

653.#.#.a: Física de plasmas; Magnetosfera; Viento solar; Ondas ion-ciclotrón; Plasma physics; Magnetosphere; Solar wind; Ion-cyclotron waves

506.1.#.a: La titularidad de los derechos patrimoniales de esta obra pertenece a las instituciones editoras. Su uso se rige por una licencia Creative Commons BY-NC-ND 4.0 Internacional, https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode.es, para un uso diferente consultar al responsable jurídico del repositorio por medio del correo electrónico revistagi@igeofisica.unam.mx

884.#.#.k: http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1242

001.#.#.#: 063.oai:revistagi.geofisica.unam.mx:article/1242

041.#.7.h: spa

520.3.#.a: During the past years, a method has been developed in order to study electromagnetic ion-cyclotron waves in multicomponent plasm·as. The method is reviewed and applied to ring current proton losses, and to the generation of electromagnetic ion-cyclotron waves at the geostacionary altitude. This method is also applied to the preferential acceleration of alpha particles in fast solar wind conditions. It is shown that a small positive drift velocity between Alpha particles and protons can result in an alpha particle acceleration to veloCities well in excess of the proton bulk velocity. During the acceleration process, which is assumed to take place at heliocentric distances less than 0.3 AU, the Alpha particle velocity should exceed the proton velocity; then the gap which exists around the alpha particle gyrofrequency disappears. For proton thermal anisotropies of the order of those observed in fast solar wind, the waves either grow or are not damped excessively, so the waves can exist and might lead to the observed differential speeds. The way in which the alpha particles exceed the proton velocity is not accounted for by this mechanism, but some ideas concerning this initial process are discussed.

773.1.#.t: Geofísica Internacional; Vol. 30 Núm. 4: Octubre 1, 1991; 225-239

773.1.#.o: http://revistagi.geofisica.unam.mx/index.php/RGI

022.#.#.a: ISSN-L: 2954-436X; ISSN impreso: 0016-7169

310.#.#.a: Trimestral

300.#.#.a: Páginas: 225-239

264.#.1.b: Instituto de Geofísica, UNAM

doi: https://doi.org/10.22201/igeof.00167169p.1991.30.4.1242

handle: 00ac1d74f7a02706

harvesting_date: 2023-06-20 16:00:00.0

856.#.0.q: application/pdf

file_creation_date: 2022-07-05 10:57:38.0

file_modification_date: 2022-07-24 03:01:45.0

file_creator: L. Gomberoff

file_name: 6b28212165a75de9e787429821ea95164d467427607adddd94fcccebe76bcb6f.pdf

file_pages_number: 16

file_format_version: application/pdf; version=1.6

file_size: 1780479

245.1.0.b: The semi-cold approximation in magnetospheric and solar wind physics

last_modified: 2023-06-20 16:00:00

license_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode.es

license_type: by-nc-nd

No entro en nada

No entro en nada 2

Artículo

The semi-cold approximation in magnetospheric and solar wind physics

Gomberoff, L.

Instituto de Geofísica, UNAM, publicado en Geofísica Internacional, y cosechado de Revistas UNAM

Licencia de uso

Procedencia del contenido

Entidad o dependencia
Instituto de Geofísica, UNAM
Revista
Repositorio
Contacto
Revistas UNAM. Dirección General de Publicaciones y Fomento Editorial, UNAM en revistas@unam.mx

Cita

Gomberoff, L. (1991). The semi-cold approximation in magnetospheric and solar wind physics. Geofísica Internacional; Vol. 30 Núm. 4: Octubre 1, 1991; 225-239. Recuperado de https://repositorio.unam.mx/contenidos/4133119

Descripción del recurso

Autor(es)
Gomberoff, L.
Tipo
Artículo de Investigación
Área del conocimiento
Físico Matemáticas y Ciencias de la Tierra
Título
The semi-cold approximation in magnetospheric and solar wind physics
Fecha
1991-10-01
Resumen
During the past years, a method has been developed in order to study electromagnetic ion-cyclotron waves in multicomponent plasm·as. The method is reviewed and applied to ring current proton losses, and to the generation of electromagnetic ion-cyclotron waves at the geostacionary altitude. This method is also applied to the preferential acceleration of alpha particles in fast solar wind conditions. It is shown that a small positive drift velocity between Alpha particles and protons can result in an alpha particle acceleration to veloCities well in excess of the proton bulk velocity. During the acceleration process, which is assumed to take place at heliocentric distances less than 0.3 AU, the Alpha particle velocity should exceed the proton velocity; then the gap which exists around the alpha particle gyrofrequency disappears. For proton thermal anisotropies of the order of those observed in fast solar wind, the waves either grow or are not damped excessively, so the waves can exist and might lead to the observed differential speeds. The way in which the alpha particles exceed the proton velocity is not accounted for by this mechanism, but some ideas concerning this initial process are discussed.
Tema
Física de plasmas; Magnetosfera; Viento solar; Ondas ion-ciclotrón; Plasma physics; Magnetosphere; Solar wind; Ion-cyclotron waves
Idioma
spa
ISSN
ISSN-L: 2954-436X; ISSN impreso: 0016-7169

Enlaces