Non-thermal radiation associated with massive stars

Massive stars launch powerful, supersonic winds which carry a huge kinetic power. These can generate strong shocks capable of accelerating relativistic particles. Such particles can emit broadband nonthermal radiation. Here we present an overview of the investigations we carried out focused on the n...

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Autores principales: Palacio, Santiago del, Bosch Ramón, V., Romero, Gustavo Esteban
Formato: Articulo
Lenguaje:Inglés
Publicado: 2021
Materias:
Ciencias Astronómicas
stars: massive
acceleration of particles
radiation mechanisms: non-thermal
gamma rays: stars
X-rays: stars
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/176394
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-176394
record_format dspace
spelling I19-R120-10915-1763942025-02-11T20:04:36Z http://sedici.unlp.edu.ar/handle/10915/176394 Non-thermal radiation associated with massive stars Palacio, Santiago del Bosch Ramón, V. Romero, Gustavo Esteban 2021 2025-02-11T18:16:38Z en Ciencias Astronómicas stars: massive acceleration of particles radiation mechanisms: non-thermal gamma rays: stars X-rays: stars Massive stars launch powerful, supersonic winds which carry a huge kinetic power. These can generate strong shocks capable of accelerating relativistic particles. Such particles can emit broadband nonthermal radiation. Here we present an overview of the investigations we carried out focused on the non-thermal emission produced in systems involving massive stars (stellar bubbles, stellar bow shocks, colliding-wind binaries, and microquasars). Our main goal is to determine the cosmic-ray acceleration efficiency in these systems, the conditions upon which they can become non-thermal emitters, and the characteristics of their magnetic fields. We highlight the importance of developing broadband radiation models and their virtuous feedback with multifrequency observational campaigns comprising from radio wavelengths up to high energies (X-rays and 7 rays). Las estrellas de gran masa despiden vientos supersónicos con una enorme potencia cinética capaces de acelerar partículas relativistas. Dichas partículas pueden emitir radiación no térmica a lo largo de todo el espectro electromagnético. Aquí presentamos un resumen de nuestras investigaciones de la emisión no térmica producida en sistemas con estrellas de gran masa (burbujas estelares, bow shocks, binarias con colisión de vientos y microcuásares). Nuestro objetivo central es determinar la eficiencia de aceleración de rayos cósmicos en estos sistemas, bajo qué condiciones son capaces de ser emisores no térmicos y las características de sus campos magnéticos. Enfatizamos la relevancia del desarrollo de modelos radiativos y su retroalimentación positiva con campañas observacionales multi-frecuencia desde ondas de radio hasta altas energías (rayos X y rayos 7). Asociación Argentina de Astronomía Articulo Articulo http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf 246-252
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
stars: massive
acceleration of particles
radiation mechanisms: non-thermal
gamma rays: stars
X-rays: stars
spellingShingle Ciencias Astronómicas
stars: massive
acceleration of particles
radiation mechanisms: non-thermal
gamma rays: stars
X-rays: stars
Palacio, Santiago del
Bosch Ramón, V.
Romero, Gustavo Esteban
Non-thermal radiation associated with massive stars
topic_facet Ciencias Astronómicas
stars: massive
acceleration of particles
radiation mechanisms: non-thermal
gamma rays: stars
X-rays: stars
description Massive stars launch powerful, supersonic winds which carry a huge kinetic power. These can generate strong shocks capable of accelerating relativistic particles. Such particles can emit broadband nonthermal radiation. Here we present an overview of the investigations we carried out focused on the non-thermal emission produced in systems involving massive stars (stellar bubbles, stellar bow shocks, colliding-wind binaries, and microquasars). Our main goal is to determine the cosmic-ray acceleration efficiency in these systems, the conditions upon which they can become non-thermal emitters, and the characteristics of their magnetic fields. We highlight the importance of developing broadband radiation models and their virtuous feedback with multifrequency observational campaigns comprising from radio wavelengths up to high energies (X-rays and 7 rays).
format Articulo
Articulo
author Palacio, Santiago del
Bosch Ramón, V.
Romero, Gustavo Esteban
author_facet Palacio, Santiago del
Bosch Ramón, V.
Romero, Gustavo Esteban
author_sort Palacio, Santiago del
title Non-thermal radiation associated with massive stars
title_short Non-thermal radiation associated with massive stars
title_full Non-thermal radiation associated with massive stars
title_fullStr Non-thermal radiation associated with massive stars
title_full_unstemmed Non-thermal radiation associated with massive stars
title_sort non-thermal radiation associated with massive stars
publishDate 2021
url http://sedici.unlp.edu.ar/handle/10915/176394
work_keys_str_mv AT palaciosantiagodel nonthermalradiationassociatedwithmassivestars
AT boschramonv nonthermalradiationassociatedwithmassivestars
AT romerogustavoesteban nonthermalradiationassociatedwithmassivestars
_version_ 1847019279352856576

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