{"product_id":"topics-in-neutrino-astrophysics-von-man-ho-chan","title":"Topics in Neutrino Astrophysics","description":"\u003cp\u003eIn this book, we investigate observable consequences  of active and sterile neutrinos, in galactic,  cluster, and cosmological scales. We assume that  sterile neutrnos with masses of order 10''s eV, 10''s  keV, and MeV were formed by oscillation of active  neutrinos in the early universe. If sterile  neutrinos with mass about 30 eV exist, they affect  the structure of galaxies and explain the flatness  of their rotation curves. Also, the existence of  decaying sterile neutrinos with mass 16-18 keV can  simultaneously be the cause of heating at the Milky  Way center, the supermassive blackhole mass and  velocity dispersion relation, the lack of cooling  flow in clusters, and reionization in the universe.  Lastly, we make use of the observed 511 keV  annihilation flux line at the Milky Way center to  constrain properties of sterile neutrinos of MeV  mass scale. We also derive a relation among several  cluster observables assuming the existence of an  active neutrino halo, which agrees with the  observational data in 103 clusters.\u003c\/p\u003e\u003cdiv class=\"aw-variant-hidden-subtitle-div\" id=\"aw-variant-subtitle-9783843373401\"\u003e\u003ch3\u003eNeutrinos in Galaxies, Clusters and the Universe\u003c\/h3\u003e\u003c\/div\u003e","brand":"Autorenwelt Shop","offers":[{"title":"Softcover - 9783843373401","offer_id":39497082306653,"sku":"9783843373401","price":59.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0940\/0622\/files\/1845940a-b36b-41f6-971e-f4b5aff86c2f.jpg?v=1757567832","url":"https:\/\/shop.autorenwelt.de\/products\/topics-in-neutrino-astrophysics-von-man-ho-chan","provider":"Autorenwelt Shop","version":"1.0","type":"link"}