karl mannheim – itpa würzburg
DESCRIPTION
Karl Mannheim – ITPA Würzburg. Gamma rays from the Virgo and Coma clusters of galaxies Berlin CTA-Meeting, May 4-5, 2006. Clusters of Galaxies. Storage of (UHE) cosmic rays Supernova-driven winds Radiojets from Active Galactic Nuclei Acceleration of (UHE) cosmic rays - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Karl Mannheim – ITPA Würzburg](https://reader033.vdokument.com/reader033/viewer/2022061616/5681304c550346895d95f91b/html5/thumbnails/1.jpg)
Karl Mannheim – ITPA Würzburg
Gamma rays from the Virgo and Gamma rays from the Virgo and Coma clusters of galaxiesComa clusters of galaxies
Berlin CTA-Meeting, May 4-5, 2006Berlin CTA-Meeting, May 4-5, 2006
![Page 2: Karl Mannheim – ITPA Würzburg](https://reader033.vdokument.com/reader033/viewer/2022061616/5681304c550346895d95f91b/html5/thumbnails/2.jpg)
Clusters of Galaxies
• Storage of (UHE) cosmic rays– Supernova-driven winds– Radiojets from Active Galactic Nuclei
• Acceleration of (UHE) cosmic rays– Cluster merger shocks– Accretion shocks– Dynamical relaxation shocks
• Dark matter annihilation – Largest mass concentrations– Small-scale clumps dominance: Sorting in
dM/R2
» Galactic Center» Nearest halo clump (unidentified EGRET?)» Nearest rich clusters (Virgo, Coma, Perseus)» Nearest dwarf galaxies (Sagittarius, Draco)
![Page 3: Karl Mannheim – ITPA Würzburg](https://reader033.vdokument.com/reader033/viewer/2022061616/5681304c550346895d95f91b/html5/thumbnails/3.jpg)
Galactic Vicinity (200 kpc)
![Page 4: Karl Mannheim – ITPA Würzburg](https://reader033.vdokument.com/reader033/viewer/2022061616/5681304c550346895d95f91b/html5/thumbnails/4.jpg)
Local Group (2 Mpc)
![Page 5: Karl Mannheim – ITPA Würzburg](https://reader033.vdokument.com/reader033/viewer/2022061616/5681304c550346895d95f91b/html5/thumbnails/5.jpg)
Local Universe (60 Mpc)
![Page 6: Karl Mannheim – ITPA Würzburg](https://reader033.vdokument.com/reader033/viewer/2022061616/5681304c550346895d95f91b/html5/thumbnails/6.jpg)
Local Universe (300 Mpc)
![Page 7: Karl Mannheim – ITPA Würzburg](https://reader033.vdokument.com/reader033/viewer/2022061616/5681304c550346895d95f91b/html5/thumbnails/7.jpg)
Virgo cluster
Coma cluster
![Page 8: Karl Mannheim – ITPA Würzburg](https://reader033.vdokument.com/reader033/viewer/2022061616/5681304c550346895d95f91b/html5/thumbnails/8.jpg)
Cosmic rays in nearby clusters of galaxies
Pfrommer et al.: Cosmic ray propagation model fitted to radio and X-ray observations, employing hydrodynamical code for of intracluster medium (-ray fluxes > 50 GeV)
![Page 9: Karl Mannheim – ITPA Würzburg](https://reader033.vdokument.com/reader033/viewer/2022061616/5681304c550346895d95f91b/html5/thumbnails/9.jpg)
Cosmic rays in Coma
Berrington & Dermer:
Cluster merger shock
Völk et al.: Cosmic ray propagation
Reimer et al. Cosmic ray propagation
![Page 10: Karl Mannheim – ITPA Würzburg](https://reader033.vdokument.com/reader033/viewer/2022061616/5681304c550346895d95f91b/html5/thumbnails/10.jpg)
M 87 / Virgo Cluster
C=40
C=335
Targeted observations seem promising with new – generation experiments
DarkSusy scan
Control astrophysical backgrounds:-AGN in M87-CRp – interactions-MAGIC observations have started in May 2005
![Page 11: Karl Mannheim – ITPA Würzburg](https://reader033.vdokument.com/reader033/viewer/2022061616/5681304c550346895d95f91b/html5/thumbnails/11.jpg)
M87 SED
(ICRC)
![Page 12: Karl Mannheim – ITPA Würzburg](https://reader033.vdokument.com/reader033/viewer/2022061616/5681304c550346895d95f91b/html5/thumbnails/12.jpg)
Structure Formation• ART Code (A. Klypin et al.)
• 3 £ 1014 solar masses; 9 million particles („Virgo Cluster“)
• (sub)structure down to 3 £ 107 solar masses: clumps!
D. Elsaesser, S. Gottloeber, A. Khalathyan and M. Steinmetz
2DM ds
![Page 13: Karl Mannheim – ITPA Würzburg](https://reader033.vdokument.com/reader033/viewer/2022061616/5681304c550346895d95f91b/html5/thumbnails/13.jpg)
Summary
Clusters are cutting-edge targets for current IACTsRich potential for astrophysics, cosmology, and
particle physics
Origin of UHE cosmic rays Dark matter annihilation Role of nonthermal plasma in structure
formation
… northern location prefered for a dedicated„cluster mission“with future CTAs…