Fargion, D. and Grossi, M. (2005) UHE leptons and neutrons feeding precessing γ jet in GRBs - SGRs: A SGR 1806-20 link to EeV CR? Il nuovo cimento C, 28 (4\5). pp. 809-812. ISSN 1826-9885
|
Text
ncc9102.pdf - Published Version Download (174kB) | Preview |
Abstract
Soft Gamma Repeaters are widely believed to occur as isotropic Magnetar explosion. We suggest on the contrary that they may be described by thin collimated spinning and precessing gamma jets, flashing and blazing along the line of sight. The jet (for SGRs) may be powered by an accretion disk in binary system and it produces huge outflows and blazing features oscillating mode as observed in the light curve of the Giant Flare from SGR 1806-20. The precessing and spinning nature of the blazing gamma jets reflects, at smaller intensity, the same behaviour observed in short GRBs jetted Supernova, as well as re-brightening and bumps in their afterglows. The SGR γ beam may be powered by Inverse Compton Scattering (ICS) or by synchrotron radiation of electron pairs, respectively, at GeVs or PeVs energies. In the latter case, tens of PeV leptons (muons later decaying into PeV electrons) might be originated while EeV nucleons jets (protons-neutrons) are in photopion equilibrium with infrared photons surrounding the source. The neutron jet might survive and remain collimated. It may be already detected as an EeV cosmic ray anisotropy in the AGASA map pointing toward observable known SGRs: SGR 1900 +14 and SGR 1806-20. If the SGR-EeV connection is correct, a parasite trace of PeVs neutrinos as well PeV-TeVs gamma rays might be found in present or future data records, among the other CR array detectors, and inside the Amanda, Baikal volumes and Milagro muon bundle tracks.
| Item Type: | Article |
|---|---|
| Additional Information: | Paper presented at the “4th Workshop on Gamma-Ray Burst in the Afterglow Era”, Rome, October 18-22, 2004. |
| Uncontrolled Keywords: | Supernovae ; γ-ray sources; γ ray burst |
| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 17 Mar 2020 17:57 |
| Last Modified: | 17 Mar 2020 17:57 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/15953 |
Actions (login required)
 |
View Item |
