Title: The TeV Cosmic Ray Bump: a Message from Epsilon Indi or Epsilon Eridani Star?
Speaker: Mikhail Malkov, University California of San Diego
Abstract: A recently observed bump in the cosmic ray (CR) spectrum from 0.3-30 TV is likely caused by a stellar bow shock that reaccelerates preexisting CRs, which further propagate to the Sun along the magnetic field lines. Along their way, these particles generate an Iroshnikov-Kraichnan (I-K) turbulence that controls their propagation and sustains the bump. Ad hoc fitting of the bump shape requires six adjustable parameters. Our model requires none, merely depending on three physical unknowns that we constrain using the fit. These are the shock Mach number, M, its size, lperp, and the distance to it Zobs... <full abstract at https://space.umd.edu/seminars/showAbstract/0301211630>