SS433 Microquasar Jet and the TeV Resurgence beam

TL;DR

This paper explores the high-energy processes of the SS433 microquasar, proposing an alternative model to explain the recent TeV gamma-ray resurgence observed far from the source, challenging existing shock wave theories.

Contribution

It introduces a new framework based on high energy nuclear physics to explain the disconnected and aligned TeV gamma-ray jets in SS433, contrasting with standard shock wave models.

Findings

Discovered a distant, disconnected TeV gamma-ray beam tail from SS433.

Proposed an alternative nuclear physics-based model for jet collimation.

Discussed testable consequences to validate the new model.

Abstract

The understanding of microquasars in our galaxy is one of the frontiers of high energy astrophysics. Their models are based on a capturing mass Black Hole, with a nearby spiraling binary companion star. The companion star mass feeds the accretion disk around the Black Hole. This energy also fuels an orthogonal precessing X gamma jets. The spiral precessing tail of such microquasars, as the SS433 system, is due to an ultra-relativistic jet, spraying nucleons and electrons at relativistic speeds. The up-down jet is observable in radio, X, gamma spectra. Its long spirals are spread and diluted within a light-year distance. The source is inside the W50 supernova remnant nebula , whose asymmetry reflects the past and present role of the SS433 jet. Very recently HESS, HAWC discovered, surprisingly at a much far disconnected distance from the SS433, the resurgence of a twin gamma beam tail. Nearly 75 years light distance far away from the same inner jet source. The recent standard model is based on an accelerating shock wave which reaccelerates, the resurgence of a PeV nucleon beam and its TeV secondaries. The surprising recollimation of this TeV beam jet is difficult to be accepted, in the assumption of a planarlike Fermi shock wave model. Here we discuss an alternative framework based on known high energy nuclear physics, capable to simultaneously explaining both the disconnected and the aligned hard TeV jet appearance. Several consequences, that might also be able to validate the model, are considered.