Cen A as gamma- and UHE cosmic-ray Source

Rieger, F. M.

アイテム詳細

登録内容を編集ファイル形式で保存

一時保存へ追加

タグ情報を表示リリース履歴を表示詳細要約

公開

会議論文

Cen A as gamma- and UHE cosmic-ray Source

MPS-Authors

/persons/resource/persons30943

Rieger, F. M.
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

External Resource

There are no locators available

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

フルテキスト (公開)

1108.4565
(プレプリント), 177KB

付随資料 (公開)

There is no public supplementary material available

引用

Rieger, F. M. (2012). Cen A as gamma- and UHE cosmic-ray Source. Memorie della Societa Astronomica Italiana, 83, 127.

引用: https://hdl.handle.net/11858/00-001M-0000-000E-B5AB-E

要旨

Cen A has been recently detected in the high-energy (HE) and very high energy (VHE) gamma-ray domain by Fermi-LAT and H.E.S.S. We review the observed characteristics and suggest a scenario where the VHE emission originates from the vicinity of the black hole. Motivated by the possible association of some ultra-high energy (UHE) cosmic ray (CR) events with Cen A, we further analyze the acceleration efficiency for a number of a mechanisms (including shock and stochastic acceleration), showing that most of them (apart perhaps from shear) have serious difficulties in accelerating protons beyond a few $10^{19}$ eV.