Galactic Neutrino Sources

TY - CHAP

T1 - Galactic Neutrino Sources

AU - Ahlers, Markus

PY - 2017/3/20

Y1 - 2017/3/20

N2 - There is general consensus that the flux of cosmic rays (CRs) below a few PeV originates in galactic sources. Around 3 PeV the CR spectrum shows a significant break, the so-called CR knee, that could originate from the fact that galactic CR sources reach their maximal acceleration energy, or that CR escape from the Milky Way becomes more efficient. The sources are unknown, but it has long been speculated that galactic core-collapse supernovae could be responsible. These events produce ejecta with kinetic energy of the order of εej ≃ 1051εej,51 erg per supernova (SN) explosion at a rate RSN = 0.03RSN,-1/5 yr-1. Diffuse shock acceleration taking place in remnant shocks could convert a significant fraction εCR ε 0.1εCR,-1 of this kinetic energy into a non-thermal population of cosmic rays. ©

AB - There is general consensus that the flux of cosmic rays (CRs) below a few PeV originates in galactic sources. Around 3 PeV the CR spectrum shows a significant break, the so-called CR knee, that could originate from the fact that galactic CR sources reach their maximal acceleration energy, or that CR escape from the Milky Way becomes more efficient. The sources are unknown, but it has long been speculated that galactic core-collapse supernovae could be responsible. These events produce ejecta with kinetic energy of the order of εej ≃ 1051εej,51 erg per supernova (SN) explosion at a rate RSN = 0.03RSN,-1/5 yr-1. Diffuse shock acceleration taking place in remnant shocks could convert a significant fraction εCR ε 0.1εCR,-1 of this kinetic energy into a non-thermal population of cosmic rays. ©

U2 - 10.1142/9789814759410_0004

DO - 10.1142/9789814759410_0004

M3 - Book chapter

SN - 978-981-4759-40-3

SP - 47

EP - 66

BT - Neutrino Astronomy

PB - World Scientific

ER -