A. T. Araudo

G. E. Romero

J. M. Paredes

V. Bosch-ramon

Astronomy and Astrophysics

arXiv

Massive protostars have associated bipolar outflows with velocities of hundreds of km/s. Such outflows produce strong shocks when interact with the ambient medium leading to regions of non-thermal radio emission. Under certain conditions, the population of relativistic particles accelerated at the terminal shocks of the protostellar jets can produce significant gamma-ray emission. We estimate the conditions necessary for high-energy emission in the non-thermal hot spots of jets associated with massive protostars embedded in dense molecular clouds. Our results show that particle-matter interactions can lead to the detection of molecular clouds hosting massive young stellar objects by the Fermi satellite at MeV-GeV energies and even by Cherenkov telescope arrays in the GeV-TeV range. Astronomy at gamma-rays can be used to probe the physical conditions in star forming regions and particle acceleration processes in the complex environment of massive molecular clouds

Romero, GE

Araudo, Anabella Teresa

Bosch-Ramon, V

Paredes, JM

Oxford University Research Archive

English

Gamma-rays from massive protostars

Context. Massive protostars have associated bipolar outflows with velocities of hundreds of km s-1. Such outflows can produce strong shocks when they interact with the ambient medium leading to regions of nonthermal radio emission. 
Aims. We aim at exploring under which conditions relativistic particles are accelerated at the terminal shocks of the protostellar jets and whether they can produce significant gamma-ray emission. 
Methods. We estimate the conditions necessary for particle acceleration up to very high energies and gamma-ray production in the nonthermal hot spots of jets associated with massive protostars embedded in dense molecular clouds. 
Results. We show that relativistic bremsstrahlung and proton-proton collisions can make molecular clouds with massive young stellar objects detectable by the Fermi satellite at MeV-GeV energies and by Cherenkov telescope arrays in the GeV-TeV range. 
Conclusions. Gamma-ray astronomy can be used to probe the physical conditions in star-forming regions and particle acceleration processes in the complex environment of massive molecular clouds.Facultad de Ciencias Astronómicas y Geofísica

Bosch Ramon, V.

Romero, Gustavo Esteban

Paredes, J. M.

El Servicio de Difusión de la Creación Intelectual

Massive protostars as gamma-ray sources

Context. Massive protostars have associated bipolar outflows with velocities of hundreds of km s-1. Such outflows can produce
strong shocks when they interact with the ambient medium leading to regions of nonthermal radio emission.
        Aims. We aim at exploring under which conditions relativistic particles are 
accelerated at the terminal shocks 
of the protostellar jets and whether they can produce significant gamma-ray emission.
        Methods. We estimate the conditions necessary for particle acceleration up to very high energies and 
gamma-ray production in the nonthermal hot spots of jets associated with 
massive protostars embedded in dense molecular clouds.
        Results. We show that relativistic bremsstrahlung and proton-proton collisions can make molecular clouds with massive young 
stellar objects detectable by the 
Fermi satellite at MeV-GeV energies and by Cherenkov telescope arrays in the GeV-TeV range.
        Conclusions. Gamma-ray astronomy can be used to probe the physical conditions in star-forming regions and particle acceleration 
processes in the complex environment of massive molecular clouds

V. Bosch-Ramon

EDP Sciences OAI-PMH repository (1.2.0)

Massive protostars have associated bipolar outflows with velocities of hundreds of km s-1. Such outflows produce strong shocks when interact with the ambient medium leading to regions of non-thermal radio emission. Under certain conditions, the population of relativistic particles accelerated at the terminal shocks of the protostellar jets can produce significant gamma-ray emission. We estimate the conditions necessary for high-energy emission in the non-thermal hot spots of jets associated with massive protostars embedded in dense molecular clouds. Our results show that particle-matter interactions can lead to the detection of molecular clouds hosting massive young stellar objects by the Fermi satellite at MeV-GeV energies and even by Cherenkov telescope arrays in the GeV-TeV range. Astronomy at gamma-rays can be used to probe the physical conditions in star forming regions and particle acceleration processes in the complex environment of massive molecular clouds.Fil: Romero, Gustavo Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto Argentino de Radioastronomia (i); Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Araudo, Anabella Teresa. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico La Plata. Instituto Argentino de Radioastronomia (i); Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Bosch Ramon, Valenti. Max Planck Institut  fur Kernphysik; AlemaniaFil: Paredes, Josep María. Universitat de Barcelona. Departament d’Astronomia i Meteorologia and Institut de Ciéncies del Cosmos; Españ

Bosch Ramon, Valenti

Paredes, Josep María

LAReferencia - Red Federada de Repositorios Institucionales de Publicaciones Científicas Latinoamericanas

Publications of the Astronomical Society of the Pacific

Massive protostars have associated bipolar outflows with velocities of
hundreds of km/s. Such outflows produce strong shocks when interact with the
ambient medium leading to regions of non-thermal radio emission. Under certain
conditions, the population of relativistic particles accelerated at the
terminal shocks of the protostellar jets can produce significant gamma-ray
emission. We estimate the conditions necessary for high-energy emission in the
non-thermal hot spots of jets associated with massive protostars embedded in
dense molecular clouds. Our results show that particle-matter interactions can
lead to the detection of molecular clouds hosting massive young stellar objects
by the Fermi satellite at MeV-GeV energies and even by Cherenkov telescope
arrays in the GeV-TeV range. Astronomy at gamma-rays can be used to probe the
physical conditions in star forming regions and particle acceleration processes
in the complex environment of massive molecular clouds

Araudo, AT

Oxford University Research Archive (ORA)

CiteSeerX

Massive protostars have associated bipolar outflows with velocities of hundreds of km/s. Such outflows produce strong shocks when interact with the ambient medium leading to regions of non-thermal radio emission. Under certain conditions, the population of relativistic particles accelerated at the terminal shocks of the protostellar jets can produce significant gamma-ray emission. We estimate the conditions necessary for high-energy emission in the non-thermal hot spots of jets associated with massive protostars embedded in dense molecular clouds. Our results show that particle-matter interactions can lead to the detection of molecular clouds hosting massive young stellar objects by the Fermi satellite at MeV-GeV energies and even by Cherenkov telescope arrays in the GeV-TeV range. Astronomy at gamma-rays can be used to probe the physical conditions in star forming regions and particle acceleration processes in the complex environment of massive molecular clouds.Fil: Romero, Gustavo Esteban. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; ArgentinaFil: Araudo, Anabella Teresa. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; ArgentinaFil: Bosch Ramon, Valentí. Max Planck Institut für Kernphysik; AlemaniaFil: Paredes, Josep Maria. Universitat de Barcelona; EspañaHigh Energy Phenomena in Massive StarsJaénEspañaUniversidad de Jaé

Bosch Ramon, Valentí

Paredes, Josep Maria

CONICET Digital

Gamma rays from massive protostars

Massive protostars have associated bipolar outflows with velocities of hundreds of km/s. Such outflows produce strong shocks when interact with the ambient medium leading to regions of non-thermal radio emission. Under certain conditions, the population of relativistic particles accelerated at the terminal shocks of the protostellar jets can produce significant gamma-ray emission. We estimate the conditions necessary for high-energy emission in the non-thermal hot spots of jets associated with massive protostars embedded in dense molecular clouds. Our results show that particle-matter interactions can lead to the detection of molecular clouds hosting massive young stellar objects by the Fermi satellite at MeV-GeV energies and even by Cherenkov telescope arrays in the GeV-TeV range. Astronomy at gamma-rays can be used to probe the physical conditions in star forming regions and particle acceleration processes in the complex environment of massive molecular clouds.Fil: Romero, Gustavo Esteban. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; ArgentinaFil: Araudo, Anabella Teresa. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto Argentino de Radioastronomía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto Argentino de Radioastronomía; ArgentinaFil: Bosch Ramon, Valentí. Max Planck Institut für Kernphysik; AlemaniaFil: Paredes, Josep Maria. Universidad de Barcelona. Facultad de Física; EspañaHigh Energy Phenomena in Massive StarsJaénEspañaUniversidad de Jaé

Gamma-Rays from Massive Protostars

https://ri.conicet.gov.ar/bitstream/11336/222319/2/CONICET_Digital_Nro.9ad28e1e-7c94-4576-9f14-b3d957989374_B.pdf

Massive protostars as gamma-ray sources

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Oxford University Research Archive

El Servicio de Difusión de la Creación Intelectual

EDP Sciences OAI-PMH repository (1.2.0)

LAReferencia - Red Federada de Repositorios Institucionales de Publicaciones Científicas Latinoamericanas

Oxford University Research Archive (ORA)

CiteSeerX

LAReferencia - Red Federada de Repositorios Institucionales de Publicaciones Científicas Latinoamericanas

CONICET Digital

CONICET Digital