A Cosmic Ray Resolution to the Superbubble Energy-Crisis
arXiv:0802.3805 · doi:10.1086/587875
Abstract
Superbubbles (SBs) are amongst the greatest injectors of energy into the Galaxy, and have been proposed to be the acceleration site of Galactic cosmic rays. They are thought to be powered by the fast stellar winds and powerful supernova explosions of massive stars in dense stellar clusters and associations. Observations of the SB 'DEM L192' in the neighboring Large Magellenic Cloud (LMC) galaxy show that it contains only about one-third the energy injected by its constituent stars via fast stellar winds and supernovae. It is not yet understood where the excess energy is going, thus, the so-called 'energy crisis'. We show here that it is very likely that a significant fraction of the unaccounted for energy is being taken up in accelerating cosmic rays, thus bolstering the argument for the SB origin of cosmic rays.
Accepted for publication in ApJL
References in corpus (9)
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- Beyond the myth of the supernova-remnant origin of cosmic rays
- Cosmic ray production in superbubbles
- Feedback by massive stars and the emergence of superbubbles II. X-ray properties
- XMM-Newton study of 30 Dor C and a newly identified MCSNR J0536-6913 in the Large Magellanic Cloud
- Dynamics and Energy Loss in Superbubbles
- Cosmic Ray Acceleration by a Versatile Family of Galactic Wind Termination Shocks
- Cosmic rays from supernova remnants and superbubbles
- Cosmic Ray Origin: Lessons from Ultra-High-Energy Cosmic Rays and the Galactic/Extragalactic Transition
- Chandra ACIS Survey of M33 (ChASeM33): The enigmatic X-ray emission from IC131
- Searching for Diffuse Nonthermal X-Rays from the Superbubbles N11 and N51D in the Large Magellanic Cloud
- Evidence of Particle Acceleration in the Superbubble 30 Doradus C with NuSTAR
- Sensitivity of the Cherenkov Telescope Array to TeV photon emission from the Large Magellanic Cloud
- X-ray spectroscopy of the starburst feedback in 30 Doradus
- The radio and IR counterparts of the ring nebula around HD211564
- Cosmic Ray Accelerators in the Large Magellanic Cloud
- The XMM-Newton X-ray Spectra of the Most X-ray Luminous Radio-quiet ROSAT Bright Survey-QSOs: A Reference Sample for the Interpretation of High-redshift QSO Spectra
- Evolution of superbubbles in a self-gravitating disk
- Supernovae and the Galactic Ecosystem