@article{HaeffnerStegmannJungRichardt2015,
  author    = {Haeffner, Stephanie and Stegmann, Christian and Jung-Richardt, Ira},
  title     = {Systematic search for molecular clouds near supernova remnants as sources of very-high-energy gamma-ray emission},
  series = {Astroparticle physics},
  volume    = {71},
  journal   = {Astroparticle physics},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0927-6505},
  doi       = {10.1016/j.astropartphys.2015.05.004},
  pages     = {36 -- 44},
  year      = {2015},
  abstract  = {Supernova remnants accelerate particles up to energies of at least 100 TeV as established by observations in very-high-energy gamma-ray astronomy. Molecular clouds in their vicinity provide an increased amount of target material for proton-proton interaction and subsequent neutral pion decay into gamma-rays of accelerated hadrons escaping the remnant. Therefore, these molecular clouds are potential gamma-ray sources. The gamma-ray emission from these clouds provides a unique environment to derive information on the propagation of very-high-nergy particles through the interstellar medium as well as on the acceleration of hadrons in supernova remnants. Current Imaging Atmospheric Cherenkov Telescope systems are suitable to explore a large parameter space of the propagation properties depending on the age of the supernova remnant and the distance between the remnant and the nearby molecular cloud. In this paper we present our strategy and results of a systematic search for gamma-ray emitting molecular clouds near supernova remnants which are potentially detectable with current experiments in the TeV energy range and explore the prospects of future experiments.},
  language  = {en}
}
@article{TelezhinskyDwarkadasPohl2012,
  author    = {Telezhinsky, Igor O. and Dwarkadas, Vikram V. and Pohl, Martin},
  title     = {Particle spectra from acceleration at forward and reverse shocks of young Type Ia Supernova Remnants},
  series = {Astroparticle physics},
  volume    = {35},
  journal   = {Astroparticle physics},
  number    = {6},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0927-6505},
  doi       = {10.1016/j.astropartphys.2011.10.001},
  pages     = {300 -- 311},
  year      = {2012},
  abstract  = {We study cosmic-ray acceleration in young Type Ia Supernova Remnants (SNRs) by means of test-particle diffusive shock acceleration theory and 1-D hydrodynamical simulations of their evolution. In addition to acceleration at the forward shock, we explore the particle acceleration at the reverse shock in the presence of a possible substantial magnetic field, and consequently the impact of this acceleration on the particle spectra in the remnant. We investigate the time evolution of the spectra for various time-dependent profiles of the magnetic field in the shocked region of the remnant. We test a possible influence on particle spectra of the Alfvenic drift of scattering centers in the precursor regions of the shocks. In addition, we study the radiation spectra and morphology in a broad band from radio to gamma-rays. It is demonstrated that the reverse shock contribution to the cosmic-ray particle population of young Type la SNRs may be significant, modifying the spatial distribution of particles and noticeably affecting the volume-integrated particle spectra in young SNRs. In particular spectral structures may arise in test-particle calculations that are often discussed as signatures of non-linear cosmic-ray modification of shocks. Therefore, the spectrum and morphology of emission, and their time evolution, differ from pure forward-shock solutions.},
  language  = {en}
}
@misc{BykovGehrelsKrawczynskietal.2012,
  author    = {Bykov, Andrei and Gehrels, Neil and Krawczynski, Henric and Lemoine, Martin and Pelletier, Guy and Pohl, Martin},
  title     = {Particle acceleration in relativistic outflows},
  series = {Space science reviews},
  volume    = {173},
  journal   = {Space science reviews},
  number    = {1-4},
  publisher = {Springer},
  address   = {Dordrecht},
  issn      = {0038-6308},
  doi       = {10.1007/s11214-012-9896-y},
  pages     = {309 -- 339},
  year      = {2012},
  abstract  = {In this review we confront the current theoretical understanding of particle acceleration at relativistic outflows with recent observational results on various source classes thought to involve such outflows, e.g. gamma-ray bursts, active galactic nuclei, and pulsar wind nebulae. We highlight the possible contributions of these sources to ultra-high-energy cosmic rays.},
  language  = {en}
}