| Full text | |
| Author(s): |
Dal Pino, E. M. de Gouveia
;
Rodriguez-Ramirez, J. C.
;
del Valle, M. V.
Total Authors: 3
|
| Document type: | Journal article |
| Source: | Monthly Notices of the Royal Astronomical Society; v. 537, n. 4, p. 13-pg., 2025-02-27. |
| Abstract | |
Measurements from astroparticle experiments, such as the 2017 flare associated with the source TXS 0506+056, indicate that blazars act as multimessenger (MM; radiation and neutrinos) factories. Theoretically, the particle acceleration mechanisms responsible for blazar emissions and the precise location within the jet where this occurs remain undetermined. This paper explores MM emission driven by magnetic reconnection in a blazar jet. Previous studies have shown that reconnection in the magnetically dominated regions of these relativistic jets can efficiently accelerate particles to very high energies (VHEs). Assuming that turbulent-driven magnetic reconnection accelerates cosmic ray protons and electrons by a Fermi process, we developed a lepto-hadronic radiation model without the influence of external soft photons to explain the 2017 MM flare from TXS 0506+056. In the proposed scenario, the emission blob moves downstream in the jet from similar to 2 to 4 pc from the central engine, which is a supermassive black hole of 3x10(8) M-circle dot launching a jet with 150LEdd power. As the blob moves, we observe a sequence of spectral energy distribution profiles that match the observed arrival of the high-energy neutrino and electromagnetic emission from TXS 0506+056. This arrival coincides with the high state of intermediate-energy gamma-ray (E similar to 1 GeV) detection, followed by the subsequent appearance of the VHE gamma-ray signal and then no further significant neutrino detection. We obtain a time delay between the neutrino and VHE events similar or equal to 6.4 d, which is consistent with that observed in the 2017 MM flare. (AU) | |
| FAPESP's process: | 13/10559-5 - Investigation of high energy and plasma astrophysics phenomena: theory, numerical simulations, observations, and instrument development for the Cherenkov Telescope Array (CTA) |
| Grantee: | Elisabete Maria de Gouveia Dal Pino |
| Support Opportunities: | Special Projects |
| FAPESP's process: | 17/12188-5 - Study of relativistic particles and high energy emissions around black hole and jet sources through MHD, particle-in-cell (PIC) and radiative transfer |
| Grantee: | Juan Carlos Rodríguez Ramírez |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 19/05757-9 - Nonthermal processes in galactic sources: modelling and predictions in the CTAs and ASTRI Mini-Arrays eve |
| Grantee: | Maria Victoria Del Valle |
| Support Opportunities: | Research Grants - Young Investigators Grants |
| FAPESP's process: | 21/02120-0 - Investigation of high energy and plasma astrophysics phenomena, installation of the ASTRI-Mini Array & construction of the Cherenkov Telescope Array Small Size Telescopes (CTA-SSTs) |
| Grantee: | Elisabete Maria de Gouveia Dal Pino |
| Support Opportunities: | Special Projects |
| FAPESP's process: | 20/08729-3 - Nonthermal processes in galactic sources: modelling and predictions in the CTAs and ASTRI mini-arrays eve |
| Grantee: | Maria Victoria Del Valle |
| Support Opportunities: | Scholarships in Brazil - Young Researchers |