Physical properties of the molecular cloud, N4, in SS 433: Evidence for an interaction of molecular cloud with the jet from SS 433

We conducted observations and analyses of the molecular cloud, N4, which is located at ~40 pc from SS433 same line sight as that radio shell, in 12CO(J=1-0), 12CO(J=3-2), 13CO(J=3-2), grand-state OH emissions.N4 has a strong gradient integrated intensity 12CO(J=1-0, 3-2) emission northern, eastern western edges. The main body N4 also velocity ~0.16 km s^-1 20"^-1. A shift by up to 3 systemic ~49 detected only northwestern part N4. volume density hydrogen gas kinematic temperature are estimated eight local peaks 12CO(J=1-0) 13CO(J=3-2) emissions RADEX code. calculated n(H2) an order 10^3 cm^-3, T_k ranges ~20 K ~56 K. mass be ~7300 Mo. thermal turbulent pressures ~10^5 cm^-3 ~10^7 respectively. relation tends similar clouds Galactic plane. However, these values higher than those typical Several pieces circumstantial evidence representing physical properties comparison with data infrared X-ray radiation suggest interacting jet SS433. no gamma-ray toward Compared previous study, it hard detect cosmic-ray proton origin due low sensitivity current observatories. Any was not observation antenna beam dilution.