Detection of the Characteristic Pion-Decay Signature in Supernova Remnants

  title={Detection of the Characteristic Pion-Decay Signature in Supernova Remnants},
  author={M. Ackermann and M. Ajello and A. Allafort and L. Baldini and J. Ballet and G. Barbiellini and M. Baring and D. Bastieri and K. Bechtol and R. Bellazzini and R. Blandford and E. Bloom and E. Bonamente and A. Borgland and E. Bottacini and T. Brandt and J. Bregeon and M. Brigida and P. Bruel and R. Buehler and G. Busetto and S. Buson and G. Caliandro and R. Cameron and P. Caraveo and J. Casandjian and C. Cecchi and {\"O}. Çelik and E. Charles and S. Chaty and R. Chaves and A. Chekhtman and C. Cheung and J. Chiang and G. Chiaro and A. Cillis and S. Ciprini and R. Claus and J. Cohen-Tanugi and L. Cominsky and J. Conrad and S. Corbel and S. Cutini and F. D’Ammando and A. De Angelis and F. de Palma and C. Dermer and E. do Couto e Silva and P. Drell and A. Drlica-Wagner and L. Falletti and C. Favuzzi and E. Ferrara and A. Franckowiak and Y. Fukazawa and S. Funk and P. Fusco and F. Gargano and S. Germani and N. Giglietto and P. Giommi and F. Giordano and M. Giroletti and T. Glanzman and G. Godfrey and I. Grenier and M. Grondin and J. Grove and S. Guiriec and D. Hadasch and Y. Hanabata and A. Harding and M. Hayashida and K. Hayashi and E. Hays and J. Hewitt and A. Hill and R. Hughes and M. Jackson and T. Jogler and G. J{\'o}hannesson and A. Johnson and T. Kamae and J. Kataoka and J. Katsuta and J. Kn{\"o}dlseder and M. Kuss and J. Lande and S. Larsson and L. Latronico and M. Lemoine-Goumard and F. Longo and F. Loparco and M. Lovellette and P. Lubrano and G. Madejski and F. Massaro and M. Mayer and M. Mazziotta and J. Mcenery and J. M{\'e}hault and P. Michelson and R. Mignani and W. Mitthumsiri and T. Mizuno and A. Moiseev and M. Monzani and A. Morselli and I. Moskalenko and S. Murgia and T. Nakamori and R. Nemmen and E. Nuss and M. Ohno and T. Ohsugi and N. Omodei and M. Orienti and E. Orlando and J. Ormes and D. Paneque and J. Perkins and M. Pesce-Rollins and F. Piron and G. Pivato and S. Rain{\`o} and R. Rando and M. Razzano and S. Razzaque and A. Reimer and O. Reimer and S. Ritz and C. Romoli and M. Sanchez-conde and A. Schulz and C. Sgr{\`o} and P. Simeon and E. Siskind and D. A. Smith and G. Spandre and P. Spinelli and F. Stecker and A. Strong and D. Suson and H. Tajima and H. Takahashi and T. Takahashi and T. Tanaka and J. Thayer and D. Thompson and S. Thorsett and L. Tibaldo and O. Tibolla and M. Tinivella and E. Troja and Y. Uchiyama and T. Usher and J. Vandenbroucke and V. Vasileiou and G. Vianello and V. Vitale and A. Waite and M. Werner and B. Winer and K. Wood and M. Wood and R. Yamazaki and Z. Yang and S. Zimmer},
  pages={807 - 811}
Accelerated Protons Although cosmic rays were first detected a hundred years ago, their origin is still not fully understood. Comic rays are high-energy particles, mostly protons, which bombard Earth from outer space. Most of those that originate from within our galaxy are thought to be accelerated in the shock waves from the explosion of massive stars, or supernovae. Protons accelerated in a supernova remnant will collide with interstellar material producing pions, a type of subatomic particle… Expand
Supernova remnants and the origin of cosmic rays
  • J. Vink
  • Physics
  • Proceedings of the International Astronomical Union
  • 2013
Abstract Supernova remnants have long been considered to be the dominant sources of Galactic cosmic rays. For a long time the prime evidence consisted of radio synchrotron radiation from supernovaExpand
Theoretical study of ionization profiles of molecular clouds near supernova remnants. Tracing the hadronic origin of GeV gamma radiation
Context : Since a few years, signatures of supernova remnants have been detected in gamma rays, particularly those that are known to be associated with molecular clouds. Whether these gamma rays areExpand
Gamma Rays from Cosmic Rays in Supernova Remnants
Context. Cosmic rays are thought to be accelerated at supernova remnant (SNR) shocks, but obtaining conclusive evidence for this hypothesis is difficult. Aims. New data from ground-based -rayExpand
Gamma-ray and Neutrino Signatures of Galactic Cosmic-ray Accelerators
Supernova remnants are believed to be the major contributors to the observed Galactic cosmic-ray flux, though indisputable observational pieces of evidence of such statement are still missing. AExpand
Acceleration of cosmic rays and gamma-ray emission from supernova remnants in the Galaxy
Galactic cosmic rays are believed to be accelerated at supernova remnant shocks. Though very popular and robust, this conjecture still needs a conclusive proof. The strongest support to this idea isExpand
Bell-Instability-Mediated Spectral Modulation of Hadronic Gamma Rays from a Supernova Remnant Interacting with a Molecular Cloud
Supernova remnants (SNRs) are believed to be the site of galactic cosmic-ray acceleration. However, the details of the cosmic-ray acceleration are still not well understood. Gamma ray observation isExpand
Gamma-ray observations of supernova remnants
Abstract In the past few years, gamma-ray astronomy has entered a golden age. At TeV energies, only a handful of sources were known a decade ago, but the current generation of ground-based imagingExpand
Probing maximum energy of cosmic rays in SNR through gamma rays and neutrinos from the molecular clouds around SNR W28
Abstract The galactic cosmic rays are generally believed to be originated in supernova remnants (SNRs), produced in diffusive shock acceleration (DSA) process in supernova blast waves driven byExpand
Cosmic-ray acceleration and escape from post-adiabatic supernova remnants
Context. Supernova remnants are known to accelerate cosmic rays on account of their non-thermal emission of radio waves, X-rays, and gamma rays. Although there are many models for the acceleration ofExpand
Hadronic Scenarios for Gamma-Ray Emission from Three Supernova Remnants Interacting with Molecular Clouds
GeV gamma-rays detected with the large area telescope on board the Fermi Gamma-ray space telescope in the direction of IIB21, MSII 17-39 and G337.0-0.1 have been recently reported. The threeExpand


Gamma-Ray Emission from the Shell of Supernova Remnant W44 Revealed by the Fermi LAT
An image is obtained of the supernova remnant W44, which shows associated gamma-ray emissions in the order of gigaelectronvolts, conforming with models indicating local proton and nuclei acceleration, and implies that the emission is produced by particles accelerated there. Expand
Neutral Pion Emission from Accelerated Protons in the Supernova Remnant W44
We present the AGILE gamma-ray observations in the energy range 50 MeV-10 GeV of the supernova remnant (SNR) W44, one of the most interesting systems for studying cosmic-ray production. W44 is anExpand
High energy gamma-ray emission from supernova remnants
Since Galactic cosmic rays are believed to be created in supernova remnants (SNRs), SNRs are expected to be a source of high energy gamma -rays through the decay of neutral pions produced by p-pExpand
Measuring the Cosmic-Ray Acceleration Efficiency of a Supernova Remnant
The pressure induced by cosmic rays exceeds the thermal pressure behind the northeast shock of the supernova remnant RCW 86, where the x-ray emission is dominated by synchrotron radiation from ultrarelativistic electrons. Expand
Extremely fast acceleration of cosmic rays in a supernova remnant
Broadband X-ray spectrometric measurements of RX J1713.7-3946 indicate that electron acceleration proceeds in the most effective (‘Bohm-diffusion’) regime, providing a strong argument for acceleration of protons and nuclei to energies of 1 PeV (1015 eV) and beyond in young supernova remnants. Expand
Gamma-rays from molecular clouds illuminated by cosmic rays escaping from interacting supernova remnants
Recently, the gamma-ray telescopes AGILE and Fermi observed several middle-aged supernova remnants (SNRs) interacting with molecular clouds. It is likely that their gamma-rays arise from the decay ofExpand
Observation of Supernova Remnant IC 443 with the Fermi Large Area Telescope
We report observation of the supernova remnant (SNR) IC 443 (G189.1+3.0) with the Fermi Gamma-ray Space Telescope Large Area Telescope (LAT) in the energy band between 200 MeV and 50 GeV. IC 443 is aExpand
Direct Evidence for Hadronic Cosmic-Ray Acceleration in the Supernova Renmant IC 443
The Supernova Remnant (SNR) IC 443 is an intermediate-age remnant well known for its radio, optical, X-ray and gamma-ray energy emissions. In this Letter we study the gamma-ray emission above 100 MeVExpand
Cosmic ray studies with the Fermi Gamma-ray Space Telescope Large Area Telescope
abstract The Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope provides both direct and indirectmeasurements of galactic cosmic rays (CR). The LAT high-statistics observations of theExpand
Broad-band non-thermal emission from molecular clouds illuminated by cosmic rays from nearby supernova remnants
Molecular clouds are expected to emit non-thermal radiation due to cosmic ray interactions in the dense magnetized gas. Such emission is amplified if a cloud is located close to an accelerator ofExpand