Simple Model of the Outflow from Starburst Galaxies: Application to Radio Observations

Abstract

We present an analytical model for the hydrodynamic outflow from the disk of a starburst galaxy. The model is used to calculate the cosmic ray propagation and the radio intensity distribution in the nuclear starbust region of NGC 253. We find that the cosmic ray energy production rate of the central 600 pc of NGC 253 is about $3\cdot 10^{41}$ erg s${}^{-1}$, that is about 15 percent of the total mechanical supernova power. For this inner region we estimate a terminal outflow velocity of 900 km s${}^{-1}$ and a mass loss rate of $\dot{M}=2÷4M_{\odot }$ per year.

14 pages, 3 figures, accepted to ApJ

References in corpus (3)

• Discovery of the Binary Pulsar PSR B1259-63 in Very-High-Energy Gamma Rays around Periastron with H.E.S.S
• The theory of synchrotron emission from supernova remnants
• Multi-density model of the ionised gas in NGC 253 using radio recombination lines

Cited by in corpus (22)

• Detection of Gamma Rays From a Starburst Galaxy
• Cosmic rays and the magnetic field in the nearby starburst galaxy NGC 253 I. The distribution and transport of cosmic rays
• Cosmic rays and the magnetic field of the nearby starburst galaxy NGC 253
• Wild at Heart:-The Particle Astrophysics of the Galactic Centre
• A Unified Model of the Fermi Bubbles, Microwave Haze, and Polarized Radio Lobes: Reverse Shocks in the Galactic Center's Giant Outflows
• Non-Thermal Insights on Mass and Energy Flows Through the Galactic Centre and into the Fermi Bubbles
• Spectral analysis and interpretation of the γ-ray emission from the Starburst galaxy NGC 253
• Cosmic rays and the magnetic field in the nearby starburst galaxy NGC253 III. Helical magnetic fields in the nuclear outflow
• Polycyclic aromatic hydrocarbon processing by cosmic rays
• Studying the galactic outflow in NGC 1569
• Synchrotron Constraints on a Hybrid Cosmic-Ray and Thermally-Driven Galactic Wind
• Starburst galaxies strike back: a multi-messenger analysis with Fermi-LAT and IceCube data
• Gamma-Rays and the Far-Infrared-Radio Continuum Correlation Reveal a Powerful Galactic Centre Wind
• Gamma-ray emission from the Westerlund 1 region
• Cosmic rays across the star-forming galaxy sequence. I: Cosmic ray pressures and calorimetry
• An ALMA survey of submillimetre galaxies in the COSMOS field: The extent of the radio-emitting region revealed by 3 GHz imaging with the Very Large Array
• Cosmic rays across the star-forming galaxy sequence. II: Stability limits and the onset of cosmic ray-driven outflows
• Time evolution of the radio continuum of young starbursts: The importance of synchrotron emission
• Parker Winds Revisited: An Extension to Disc Winds
• Non-thermal emission from Pulsar-Wind Nebulae in Starburst Galaxies
• Massive Star Clusters as sources of high-energy gamma radiation
• Numerical studies on the structure of the cosmic ray electron halo in starburst galaxies