Particle acceleration in the Herbig-Haro objects HH 80 and HH 81
Autor: | Omaira González-Martín, Sarita Vig, Adriana R Rodríguez-Kamenetzky, Anabella T. Araudo, Peter Hofner, Carlos Carrasco-González, Luis F. Rodríguez |
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Jazyk: | angličtina |
Rok vydání: | 2018 |
Předmět: |
Physics
High Energy Astrophysical Phenomena (astro-ph.HE) 010308 nuclear & particles physics Astrophysics::High Energy Astrophysical Phenomena FOS: Physical sciences Astronomy and Astrophysics purl.org/becyt/ford/1.3 [https] Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics ISM [X-RAYS] 01 natural sciences ) HERBIG-HARO OBJECTS [(ISM] ACCELERATION OF PARTICLES purl.org/becyt/ford/1 [https] Particle acceleration Space and Planetary Science 0103 physical sciences Herbig–Haro object ISM [RADIO CONTINUUM] Astrophysics - High Energy Astrophysical Phenomena 010303 astronomy & astrophysics Astrophysics::Galaxy Astrophysics |
Zdroj: | CONICET Digital (CONICET) Consejo Nacional de Investigaciones Científicas y Técnicas instacron:CONICET |
Popis: | We present an analysis of radio (Karl G. Jansky Very Large Array (VLA)), optical (HST), and X-ray (Chandra and XMM-Newton) observations and archival data of the Herbig-Haro objects HH 80 and HH 81 in the context of jet-cloud interactions. Our radio images are the highest angular resolution to date of these objects, allowing to spatially resolve the knots and compare the regions emitting in the different spectral ranges. We found that soft X-ray thermal emission is located ahead of the non-thermal radio peak. This result is consistent with a radiative forward shock that heats the shocked gas up to 10 6 K, and an adiabatic reverse shock able to accelerate particles and produce synchrotron radiation detectable at radio frequencies. These high angular resolution radio images also reveal a bow shock structure in the case of HH 80N, being the first time this morphology is detected in a Herbig-Haro object at these frequencies. 12 pages, 5 figures. Published in MNRAS. Corrected typo in author's name |
Databáze: | OpenAIRE |
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