High energy gamma-ray emission powered by a young protostar: the case of S255 NIRS 3
arXiv:2305.04571 · doi:10.1093/mnras/stad1413
Abstract
Evidence of efficient acceleration of cosmic rays in massive young stellar objects has been recently reported. Among these massive protostars, S255 NIRS 3 for which extreme flaring events associated with radio jets have been detected, is one of the best objects to test this hypothesis. We search for gamma-ray emission associated with this object in Fermi-LAT data and inspect the gas content in different molecular lines using the MWISP survey. A GeV source dubbed 4FGL J0613.1+1749c lies on top of the MYSO region, where two filamentary ~10 pc CO structures extend along the same direction of the sub-parsec radio jets. We investigate the spectrum, morphology, and light curve of the gamma-ray source and compare it with the theoretical emission expected from hadronic and leptonic populations accelerated in the radio jets. We argue that the gamma-ray source could be powered by particles accelerated in the S255 NIRS 3 jets, radiating via Bremsstrahlung or proton-proton interaction, and with a synchrotron component shinning in radio from primary or secondary electrons in the case of a leptonic or hadronic population.
accepted for publication in Monthly Notices of the Royal Astronomical Society
References in corpus (16)
- Gamma-Ray Emission Concurrent with the Nova in the Symbiotic Binary V407 Cygni
- Fermi Establishes Classical Novae as a Distinct Class of Gamma-Ray Sources
- The Milky Way Imaging Scroll Painting (MWISP): Project Details and Initial Results from the Galactic Longitude of 25.8deg to 49.7deg
- A Magnetized Jet from a Massive Protostar
- Time-resolved hadronic particle acceleration in the recurrent Nova RS Ophiuchi
- Proton acceleration in thermonuclear nova explosions revealed by gamma rays
- Gamma-ray emission from massive young stellar objects
- Fermi-LAT Gamma-ray Detection of the Recurrent Nova RS Ophiuchi during its 2021 Outburst
- Effective Shielding of 10 GeV Cosmic Rays from Dense Molecular Clumps
- Particle acceleration and magnetic field amplification in massive young stellar object jets
- A study of the association of Fermi sources with massive young galactic objects
- Water maser variability in a high-mass YSO outburst -- VERA and ALMA observations of S255 NIRS 3
- Molecular gas toward the Gemini OB1 Giant Molecular Cloud Complex I: Observation data
- A Multi-Epoch Study of Radio Continuum Emission from MassiveProtostars
- Ammonia mapping observations toward the Galactic massive star-forming region Sh 2-255 and Sh 2-257
- On the possible correlation of Galactic VHE source locations and enhancements of the surface density in the Galactic plane