Particle acceleration and magnetic field amplification in massive young stellar object jets

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F21%3A00547589" target="_blank" >RIV/67985815:_____/21:00547589 - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/21:00548971
Result on the web
<a href="https://doi.org/10.1093/mnras/stab635" target="_blank" >https://doi.org/10.1093/mnras/stab635</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/mnras/stab635" target="_blank" >10.1093/mnras/stab635</a>

Result language
angličtina
Original language name
Particle acceleration and magnetic field amplification in massive young stellar object jets
Original language description
We study diffusive shock acceleration and magnetic field amplification in protostellar jets with speeds between 300 and 1500 km s(-1). We show that the magnetic field in the synchrotron emitter can be amplified by the non-resonant hybrid (Bell) instability excited by the cosmic ray streaming. By combining the synchrotron data with basic theory of Bell instability we estimate the magnetic field in the synchrotron emitter and the maximum energy of protons. Protons can achieve maximum energies in the range 0.04-0.65 TeV and emit gamma rays in their interaction with matter fields. We predict detectable levels of gamma rays in IRAS 16547-5247 and IRAS 16848-4603. The gamma ray flux can be significantly enhanced by the gas mixing due to Rayleigh-Taylor instability. The detection of this radiation by the Fermi satellite in the GeV domain and the forthcoming Cherenkov Telescope Array at higher energies may open a new window to study the formation of massive stars, as well as diffusive acceleration and magnetic field amplification in shocks with velocities of about 1000 km s(-1).
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)

Project
<a href="/en/project/GA20-19854S" target="_blank" >GA20-19854S: Particle Acceleration Studies in Astrophysical Jets</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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