Optical spectroscopic monitoring of the variation in the circumstellar disc in PSR B1259-63/LS 2883 during the 2014 periastron passage
- Autores
- Van Soelen, Brian; Väisänen, Petri; Odendaal, Alida; Sushch, Iuri; Klindt, Lizelke; Meintjes, Pieter
- Año de publicación
- 2015
- Idioma
- español castellano
- Tipo de recurso
- documento de conferencia
- Estado
- versión publicada
- Descripción
- Theγ -ray binary system PSR B1259-63/LS 2883 passed through periastron in May of 2014 and was the focus of intensive multiwavelength campaigns. During the previous periastron, a large flare was detected at GeV energies 30 days after the 2010 periastron passage by Fermi-LAT. This event was re-detected during 2014 at a similar orbital phase. In order to place better constraints on the behaviour of the circumstellar disc around periastron, we performed optical spectroscopy of the Hα and He i (λ6678) lines with the Southern African Large Telescope (SALT) from 33 days before until 78 days after the 2014 periastron. The Hα line remains single peaked through all observations, but with a noted asymmetry and variation in shape. The He i line remains double peaked and shows a variation in the relative peak heights. Both lines show an increase in the equivalent width which peaks after periastron. The line strengths before periastron are, however, weaker than were detected around the 2010 periastron, though are comparable after periastron.
Facultad de Ciencias Astronómicas y Geofísicas - Materia
-
Ciencias Astronómicas
periastron
circumstellar disc
optical spectroscopy - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/168116
Ver los metadatos del registro completo
id |
SEDICI_3487159a17de41231ba7e033f28f5481 |
---|---|
oai_identifier_str |
oai:sedici.unlp.edu.ar:10915/168116 |
network_acronym_str |
SEDICI |
repository_id_str |
1329 |
network_name_str |
SEDICI (UNLP) |
spelling |
Optical spectroscopic monitoring of the variation in the circumstellar disc in PSR B1259-63/LS 2883 during the 2014 periastron passageVan Soelen, BrianVäisänen, PetriOdendaal, AlidaSushch, IuriKlindt, LizelkeMeintjes, PieterCiencias Astronómicasperiastroncircumstellar discoptical spectroscopyTheγ -ray binary system PSR B1259-63/LS 2883 passed through periastron in May of 2014 and was the focus of intensive multiwavelength campaigns. During the previous periastron, a large flare was detected at GeV energies 30 days after the 2010 periastron passage by Fermi-LAT. This event was re-detected during 2014 at a similar orbital phase. In order to place better constraints on the behaviour of the circumstellar disc around periastron, we performed optical spectroscopy of the Hα and He i (λ6678) lines with the Southern African Large Telescope (SALT) from 33 days before until 78 days after the 2014 periastron. The Hα line remains single peaked through all observations, but with a noted asymmetry and variation in shape. The He i line remains double peaked and shows a variation in the relative peak heights. Both lines show an increase in the equivalent width which peaks after periastron. The line strengths before periastron are, however, weaker than were detected around the 2010 periastron, though are comparable after periastron.Facultad de Ciencias Astronómicas y Geofísicas2015-10info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/publishedVersionObjeto de conferenciahttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdf187-190http://sedici.unlp.edu.ar/handle/10915/168116spainfo:eu-repo/semantics/altIdentifier/isbn/978-987-24948-3-4info:eu-repo/semantics/reference/url/https://sedici.unlp.edu.ar/handle/10915/167830info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:44:50Zoai:sedici.unlp.edu.ar:10915/168116Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:44:51.008SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Optical spectroscopic monitoring of the variation in the circumstellar disc in PSR B1259-63/LS 2883 during the 2014 periastron passage |
title |
Optical spectroscopic monitoring of the variation in the circumstellar disc in PSR B1259-63/LS 2883 during the 2014 periastron passage |
spellingShingle |
Optical spectroscopic monitoring of the variation in the circumstellar disc in PSR B1259-63/LS 2883 during the 2014 periastron passage Van Soelen, Brian Ciencias Astronómicas periastron circumstellar disc optical spectroscopy |
title_short |
Optical spectroscopic monitoring of the variation in the circumstellar disc in PSR B1259-63/LS 2883 during the 2014 periastron passage |
title_full |
Optical spectroscopic monitoring of the variation in the circumstellar disc in PSR B1259-63/LS 2883 during the 2014 periastron passage |
title_fullStr |
Optical spectroscopic monitoring of the variation in the circumstellar disc in PSR B1259-63/LS 2883 during the 2014 periastron passage |
title_full_unstemmed |
Optical spectroscopic monitoring of the variation in the circumstellar disc in PSR B1259-63/LS 2883 during the 2014 periastron passage |
title_sort |
Optical spectroscopic monitoring of the variation in the circumstellar disc in PSR B1259-63/LS 2883 during the 2014 periastron passage |
dc.creator.none.fl_str_mv |
Van Soelen, Brian Väisänen, Petri Odendaal, Alida Sushch, Iuri Klindt, Lizelke Meintjes, Pieter |
author |
Van Soelen, Brian |
author_facet |
Van Soelen, Brian Väisänen, Petri Odendaal, Alida Sushch, Iuri Klindt, Lizelke Meintjes, Pieter |
author_role |
author |
author2 |
Väisänen, Petri Odendaal, Alida Sushch, Iuri Klindt, Lizelke Meintjes, Pieter |
author2_role |
author author author author author |
dc.subject.none.fl_str_mv |
Ciencias Astronómicas periastron circumstellar disc optical spectroscopy |
topic |
Ciencias Astronómicas periastron circumstellar disc optical spectroscopy |
dc.description.none.fl_txt_mv |
Theγ -ray binary system PSR B1259-63/LS 2883 passed through periastron in May of 2014 and was the focus of intensive multiwavelength campaigns. During the previous periastron, a large flare was detected at GeV energies 30 days after the 2010 periastron passage by Fermi-LAT. This event was re-detected during 2014 at a similar orbital phase. In order to place better constraints on the behaviour of the circumstellar disc around periastron, we performed optical spectroscopy of the Hα and He i (λ6678) lines with the Southern African Large Telescope (SALT) from 33 days before until 78 days after the 2014 periastron. The Hα line remains single peaked through all observations, but with a noted asymmetry and variation in shape. The He i line remains double peaked and shows a variation in the relative peak heights. Both lines show an increase in the equivalent width which peaks after periastron. The line strengths before periastron are, however, weaker than were detected around the 2010 periastron, though are comparable after periastron. Facultad de Ciencias Astronómicas y Geofísicas |
description |
Theγ -ray binary system PSR B1259-63/LS 2883 passed through periastron in May of 2014 and was the focus of intensive multiwavelength campaigns. During the previous periastron, a large flare was detected at GeV energies 30 days after the 2010 periastron passage by Fermi-LAT. This event was re-detected during 2014 at a similar orbital phase. In order to place better constraints on the behaviour of the circumstellar disc around periastron, we performed optical spectroscopy of the Hα and He i (λ6678) lines with the Southern African Large Telescope (SALT) from 33 days before until 78 days after the 2014 periastron. The Hα line remains single peaked through all observations, but with a noted asymmetry and variation in shape. The He i line remains double peaked and shows a variation in the relative peak heights. Both lines show an increase in the equivalent width which peaks after periastron. The line strengths before periastron are, however, weaker than were detected around the 2010 periastron, though are comparable after periastron. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-10 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/conferenceObject info:eu-repo/semantics/publishedVersion Objeto de conferencia http://purl.org/coar/resource_type/c_5794 info:ar-repo/semantics/documentoDeConferencia |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://sedici.unlp.edu.ar/handle/10915/168116 |
url |
http://sedici.unlp.edu.ar/handle/10915/168116 |
dc.language.none.fl_str_mv |
spa |
language |
spa |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/isbn/978-987-24948-3-4 info:eu-repo/semantics/reference/url/https://sedici.unlp.edu.ar/handle/10915/167830 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
dc.format.none.fl_str_mv |
application/pdf 187-190 |
dc.source.none.fl_str_mv |
reponame:SEDICI (UNLP) instname:Universidad Nacional de La Plata instacron:UNLP |
reponame_str |
SEDICI (UNLP) |
collection |
SEDICI (UNLP) |
instname_str |
Universidad Nacional de La Plata |
instacron_str |
UNLP |
institution |
UNLP |
repository.name.fl_str_mv |
SEDICI (UNLP) - Universidad Nacional de La Plata |
repository.mail.fl_str_mv |
alira@sedici.unlp.edu.ar |
_version_ |
1844616315070840832 |
score |
13.070432 |