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BlackHoleVacuumCleaneroftheUniverse
FormationofBlackHolenuclearfusion-tendstoblowthestarshydrogenoutwardfromthestarscentergravitation-tendstopullallhydrogenbackinthedirectionithadcome
MassofStarOutcome1.4solarmassWhiteDwarf1.4solarmass3.0solarmassNeutronStar3.0solarmassBlackHoleFormationofBlackHole
primordialblackholeisformeduponextremecompressionofmatterbyexternalforcesOnepossibilityoftheexistenceofsuchblackholesareduringtheearlystagesoftheuniversewherehightemperaturesandpressuresexistedFormationofBlackHole
StructureofBlackHole(1)Schwarzschildsingularity:apointofinfinitedensityEventhorizon:boundaryoftheregioninsidewhichlightcannotescapeSchwarzschildradius:radiusoftheeventhorizonSchwarzschildblackhole(史瓦西黑洞)–anon-rotatingblackhole
Photonsphere
Outereventhorizon:BoundaryinsideofwhichnothingcanresistbeingdraggedaroundwiththerotatingmassInnereventhorizon:BoundaryinsideofwhichnothingcanescapeErgosphere:Aparticleenteringitwillbesplitintotwo:onefallsintotheblackhole,andtheotherejectedwithmoreenergyStructureofBlackHole(2)Kerrblackhole–arotatingblackhole
StructureofBlackHole(2)
Evaporationenergyisborrowedfromthevacuum,creatingaparticle-antiparticlepairOneparticleofthepairispulledintotheblackhole,andtheotherescapes,carryingwithitsomeenergyAblackholeof1solarmasswouldtake~10^66yearstoevaporatecompletely
Curvatureofspace-timeAsmallcelestialbodywithlargemassSeverecurvatureofspace-timeNotevenlightcangetout(lightlosesallenergyinclimbingoutofsuchholes)
DetectionofBlackholeIflightisnotgivenoffbyblackholes,howdowedetectthem?
OrbitingaroundnothingWhenastarchangesintoablackhole,thestrengthofitsgravitationalfieldremainsthesameTheplanetsinorbitwouldcontinueintheirorbitsasusualThepl
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