# Detection of the Characteristic Pion-Decay Signature in Supernova Remnants

@article{Ackermann2013DetectionOT, 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. D. Dermer and E. do Couto e Silva and P. S. Drell and A. Drlica-Wagner and L. Falletti and C. Favuzzi and E. C. 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. N. Lovellette and P. Lubrano and G. Madejski and F. Massaro and M. Mayer and M. Mazziotta and J. Mcenery and J. M'ehault and P. F. 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. F. 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. S{\'a}nchez-Conde and A. Schulz and C. Sgr{\`o} and P. E. Simeon and E. Siskind and D. A. Smith and G. Spandre and P. Spinelli and F. Stecker and A. Strong and D. J. 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}, journal={Science}, year={2013}, volume={339}, 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… CONTINUE READING

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