Warm dark matter Dark matter

-


warm dark matter refers particles fsl comparable size of protogalaxy. predictions based on warm dark matter similar cold dark matter on large scales, less small-scale density perturbations. reduces predicted abundance of dwarf galaxies , may lead lower density of dark matter in central parts of large galaxies; researchers consider better fit observations. challenge model lack of particle candidates required mass ~ 300 ev 3000 ev.


no known particles can categorized warm dark matter. postulated candidate sterile neutrino: heavier, slower form of neutrino not interact through weak force, unlike other neutrinos. modified gravity theories, such scalar-tensor-vector gravity, require warm dark matter make equations work.







Comments

Post a Comment

Popular posts from this blog

Kinship systems Apache

-
hide painting depicting apache girl s puberty ceremony, naiche (chiricahua apache), ca. 1900, oklahoma history center the chiricahua language has 4 different words grandparent: -chú maternal grandmother , -tsúyé maternal grandfather , -chʼiné paternal grandmother , -nálé paternal grandfather . additionally, grandparent s siblings identified same word; thus, 1 s maternal grandmother, 1 s maternal grandmother s sisters, , 1 s maternal grandmother s brothers called -chú. furthermore, grandparent terms reciprocal, is, grandparent use same term refer grandchild in relationship. example, person s maternal grandmother called -chú , maternal grandmother call person -chú (i.e. -chú can mean child of either own daughter or sibling s daughter.) chiricahua cousins not distinguished siblings through kinship terms. thus, same word refer either sibling or cousin (there not separate terms parallel-cousin , cross-cousin). additionally, terms used according sex of speaker (unlike english terms broth...
Read more

CACHEbox ApplianSys

-
cachebox230 server appliance cachebox s caching engine employs code squid project. in 2005 launched becta approved protex content filtering service in collaboration east of england broadband network, represent more 2800 schools across 10 authorities. in 2006, acquired assets , customer base of rival freedom2. has since expanded activity north american schools market , caching device requested schools 2015 e-rate funding.
Read more

The Kane Chronicles List of characters in mythology novels by Rick Riordan

-
1 kane chronicles 1.1 main characters 1.1.1 carter kane 1.1.2 sadie kane 1.1.3 walt stone 1.1.4 zia rashid 1.1.5 amos kane 1.1.6 iskandar 1.1.7 michel desjardins 1.2 egyptian deities 1.3 magicians 1.3.1 brooklyn house trainees 1.3.2 other magicians 1.4 egyptian creatures the kane chronicles main characters carter kane carter kane 1 of 2 main protagonists , narrators; descendant of narmer , of ramses great. son of julius , ruby kane. after death of mother (when 8 years old), spent 6 years travelling world egyptologist father. after father captured god set during red pyramid, carter spends of time sister sadie , uncle amos kane. becomes host of horus in first novel, , collaborates , receives advice god. develops romantic relationship shabti of magician zia rashid, , subsequently spends of time trying find real zia , demonstrate feelings toward her. father, carter has dark skin , hair, quite different both mother , sister. when living father, carter dressed impeccably julius when relaxi...
Read more