The influence of magnetic field on the cold neutral medium mass fraction and its alignment with density structures

Autores
Villagran Azuara, Marco Adrian; Gazol, A.
Año de publicación
2018
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
To contribute to the understanding of the magnetic field's influence on the segregation of cold neutral medium (CNM) in the solar neighbourhood we analyse magnetohydrodynamic simulations that include themain physical characteristics of the local neutral atomic interstellar medium. The simulations have a continuous solenoidal Fourier forcing in a periodic box of 100 pc per side and an initial uniform magnetic field (B 0 ) with intensities ranging between ~0.4 and ~8 μG. Our main results are as follows. (i) The CNM mass fraction diminishes with the increase in magnetic field intensity. (ii) There is a preferred alignment between CNM structures and B in all our B 0 range but the preference weakens as B 0 increases. It is worth noticing that this preference is also present in two-dimensional projections making an extreme angle (0 or π/2) with respect to B 0 and it is only lost for the strongest magnetic field when the angle of projection is perpendicular to B 0 . (iii) The aforementioned results are prevalent despite the inclusion of self-gravity in our continuously forced simulations with a mean density similar to the average value of the solar neighbourhood. (iv) Given a fixed B 0 and slightly higher mean densities, up to double, the effects of self-gravity are still not qualitatively significant.
Fil: Villagran Azuara, Marco Adrian. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Gazol, A.. Universidad Nacional Autónoma de México; México
Materia
ISM: MAGNETIC FIELDS
ISM: STRUCTURE
LOCAL INTERSTELLAR MATTER
MHD
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/80665
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/80665
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network_name_str CONICET Digital (CONICET)
spelling The influence of magnetic field on the cold neutral medium mass fraction and its alignment with density structuresVillagran Azuara, Marco AdrianGazol, A.ISM: MAGNETIC FIELDSISM: STRUCTURELOCAL INTERSTELLAR MATTERMHDhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1To contribute to the understanding of the magnetic field's influence on the segregation of cold neutral medium (CNM) in the solar neighbourhood we analyse magnetohydrodynamic simulations that include themain physical characteristics of the local neutral atomic interstellar medium. The simulations have a continuous solenoidal Fourier forcing in a periodic box of 100 pc per side and an initial uniform magnetic field (B 0 ) with intensities ranging between ~0.4 and ~8 μG. Our main results are as follows. (i) The CNM mass fraction diminishes with the increase in magnetic field intensity. (ii) There is a preferred alignment between CNM structures and B in all our B 0 range but the preference weakens as B 0 increases. It is worth noticing that this preference is also present in two-dimensional projections making an extreme angle (0 or π/2) with respect to B 0 and it is only lost for the strongest magnetic field when the angle of projection is perpendicular to B 0 . (iii) The aforementioned results are prevalent despite the inclusion of self-gravity in our continuously forced simulations with a mean density similar to the average value of the solar neighbourhood. (iv) Given a fixed B 0 and slightly higher mean densities, up to double, the effects of self-gravity are still not qualitatively significant.Fil: Villagran Azuara, Marco Adrian. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; ArgentinaFil: Gazol, A.. Universidad Nacional Autónoma de México; MéxicoWiley Blackwell Publishing, Inc2018-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/80665Villagran Azuara, Marco Adrian; Gazol, A.; The influence of magnetic field on the cold neutral medium mass fraction and its alignment with density structures; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 476; 4; 6-2018; 4932-49480035-8711CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/sty438info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:00:09Zoai:ri.conicet.gov.ar:11336/80665instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:00:09.936CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The influence of magnetic field on the cold neutral medium mass fraction and its alignment with density structures
title The influence of magnetic field on the cold neutral medium mass fraction and its alignment with density structures
spellingShingle The influence of magnetic field on the cold neutral medium mass fraction and its alignment with density structures
Villagran Azuara, Marco Adrian
ISM: MAGNETIC FIELDS
ISM: STRUCTURE
LOCAL INTERSTELLAR MATTER
MHD
title_short The influence of magnetic field on the cold neutral medium mass fraction and its alignment with density structures
title_full The influence of magnetic field on the cold neutral medium mass fraction and its alignment with density structures
title_fullStr The influence of magnetic field on the cold neutral medium mass fraction and its alignment with density structures
title_full_unstemmed The influence of magnetic field on the cold neutral medium mass fraction and its alignment with density structures
title_sort The influence of magnetic field on the cold neutral medium mass fraction and its alignment with density structures
dc.creator.none.fl_str_mv Villagran Azuara, Marco Adrian
Gazol, A.
author Villagran Azuara, Marco Adrian
author_facet Villagran Azuara, Marco Adrian
Gazol, A.
author_role author
author2 Gazol, A.
author2_role author
dc.subject.none.fl_str_mv ISM: MAGNETIC FIELDS
ISM: STRUCTURE
LOCAL INTERSTELLAR MATTER
MHD
topic ISM: MAGNETIC FIELDS
ISM: STRUCTURE
LOCAL INTERSTELLAR MATTER
MHD
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv To contribute to the understanding of the magnetic field's influence on the segregation of cold neutral medium (CNM) in the solar neighbourhood we analyse magnetohydrodynamic simulations that include themain physical characteristics of the local neutral atomic interstellar medium. The simulations have a continuous solenoidal Fourier forcing in a periodic box of 100 pc per side and an initial uniform magnetic field (B 0 ) with intensities ranging between ~0.4 and ~8 μG. Our main results are as follows. (i) The CNM mass fraction diminishes with the increase in magnetic field intensity. (ii) There is a preferred alignment between CNM structures and B in all our B 0 range but the preference weakens as B 0 increases. It is worth noticing that this preference is also present in two-dimensional projections making an extreme angle (0 or π/2) with respect to B 0 and it is only lost for the strongest magnetic field when the angle of projection is perpendicular to B 0 . (iii) The aforementioned results are prevalent despite the inclusion of self-gravity in our continuously forced simulations with a mean density similar to the average value of the solar neighbourhood. (iv) Given a fixed B 0 and slightly higher mean densities, up to double, the effects of self-gravity are still not qualitatively significant.
Fil: Villagran Azuara, Marco Adrian. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
Fil: Gazol, A.. Universidad Nacional Autónoma de México; México
description To contribute to the understanding of the magnetic field's influence on the segregation of cold neutral medium (CNM) in the solar neighbourhood we analyse magnetohydrodynamic simulations that include themain physical characteristics of the local neutral atomic interstellar medium. The simulations have a continuous solenoidal Fourier forcing in a periodic box of 100 pc per side and an initial uniform magnetic field (B 0 ) with intensities ranging between ~0.4 and ~8 μG. Our main results are as follows. (i) The CNM mass fraction diminishes with the increase in magnetic field intensity. (ii) There is a preferred alignment between CNM structures and B in all our B 0 range but the preference weakens as B 0 increases. It is worth noticing that this preference is also present in two-dimensional projections making an extreme angle (0 or π/2) with respect to B 0 and it is only lost for the strongest magnetic field when the angle of projection is perpendicular to B 0 . (iii) The aforementioned results are prevalent despite the inclusion of self-gravity in our continuously forced simulations with a mean density similar to the average value of the solar neighbourhood. (iv) Given a fixed B 0 and slightly higher mean densities, up to double, the effects of self-gravity are still not qualitatively significant.
publishDate 2018
dc.date.none.fl_str_mv 2018-06
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/80665
Villagran Azuara, Marco Adrian; Gazol, A.; The influence of magnetic field on the cold neutral medium mass fraction and its alignment with density structures; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 476; 4; 6-2018; 4932-4948
0035-8711
CONICET Digital
CONICET
url http://hdl.handle.net/11336/80665
identifier_str_mv Villagran Azuara, Marco Adrian; Gazol, A.; The influence of magnetic field on the cold neutral medium mass fraction and its alignment with density structures; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 476; 4; 6-2018; 4932-4948
0035-8711
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/sty438
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.070432

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