Italy2014年万圣节
2014年万圣节 时间:2021-01-17 阅读:()
Youarewelcometonominatespeakerstocolloquium@nao.
cas.
cn.
Thevideoandslideofpreviouscolloquiaandmoreinformationcanbefoundathttp://colloquium.
bao.
ac.
cn/.
Allarewelcome!
Tea,coffee,biscuitswillbeservedat2:15P.
M.
2014年第26次/Number262014Time:Wednesday2:30PM,June18Location:A601NAOCStellartidaldisruptionsanddetectionsofsupermassiveblackholebinariesinnormalgalaxiesFukunLiu(PekingUniversity)Dr.
FukunLiuisaprofessorofastrophysicsandthedirectoroftheDepartmentofAstronomy,PekingUniversity.
HegothisPhDinastrophysicsatSISSA(Italy)underthesupervisionsofProf.
JohnMiller,Dr.
AntonioLanza,andProf.
DennisSciamain1999.
HewenttoChalmersUniversityofTechnologyasapost-doctoralfellowoftheNaturalScienceResearchFoundationofSweden(NFRfellow)from1999to2001.
Then,hejoinedPekingUniversity.
HismainresearchinterestsareAGNs,theobservationalsignaturesofsupermassiveblackholebinaries,electro-magneticcounterpartsofgravitationalwaveradiations,transientactivitiesofgalacticnuclei,andstellartidaldisruptionsbySMBHs.
Recently,hewithhisresearchgroupdiscoveredthefirstpairofSMBHsinnormalgalaxies.
AbstractAGNsandalmostallmassivegalaxiesarebelievedtoharborsupermassiveblackholesatcentre.
Thepresenceofasupermassiveblackholebinary(SMBHB)atthecenterofagalaxyisthesmokinggunthatthegalaxyhasmergedwithanother,eachwithitscentralblackhole.
Measurementsofthistypecanprovideuswithastatisticalmeasureofhowmanygalaxiesaretheresultsofamerger,andthushelptounderstandtheevolutionoftheuniverse.
Inaddition,SMBHBsaredestinedtomergeinaburstofstronggravitationalwaveradiations:thosethatstilleludedetectionandforwhichscientistsarebuildingmoreandmoresensitivetelescopes.
AcoupleofSMBHBshavebeendirectlydetectedandafewobservationalevidencesfortheirexistencesinAGNsarepresent.
However,mostSMBHBsmayformatgas-poorgalacticnucleibutareverychallengingtodiscoverthem.
HereIwilltalkaboutourtheoreticalinvestigationsabouthowtomeasurethemwithstellartidaldisruptionsandpresentourdiscoveryofthefirstpairofSMBHBinnormalgalaxies.
Attheend,Iwilldiscusshowmanysimilarsystemswewouldexpecttodetectinthefuture.
cas.
cn.
Thevideoandslideofpreviouscolloquiaandmoreinformationcanbefoundathttp://colloquium.
bao.
ac.
cn/.
Allarewelcome!
Tea,coffee,biscuitswillbeservedat2:15P.
M.
2014年第26次/Number262014Time:Wednesday2:30PM,June18Location:A601NAOCStellartidaldisruptionsanddetectionsofsupermassiveblackholebinariesinnormalgalaxiesFukunLiu(PekingUniversity)Dr.
FukunLiuisaprofessorofastrophysicsandthedirectoroftheDepartmentofAstronomy,PekingUniversity.
HegothisPhDinastrophysicsatSISSA(Italy)underthesupervisionsofProf.
JohnMiller,Dr.
AntonioLanza,andProf.
DennisSciamain1999.
HewenttoChalmersUniversityofTechnologyasapost-doctoralfellowoftheNaturalScienceResearchFoundationofSweden(NFRfellow)from1999to2001.
Then,hejoinedPekingUniversity.
HismainresearchinterestsareAGNs,theobservationalsignaturesofsupermassiveblackholebinaries,electro-magneticcounterpartsofgravitationalwaveradiations,transientactivitiesofgalacticnuclei,andstellartidaldisruptionsbySMBHs.
Recently,hewithhisresearchgroupdiscoveredthefirstpairofSMBHsinnormalgalaxies.
AbstractAGNsandalmostallmassivegalaxiesarebelievedtoharborsupermassiveblackholesatcentre.
Thepresenceofasupermassiveblackholebinary(SMBHB)atthecenterofagalaxyisthesmokinggunthatthegalaxyhasmergedwithanother,eachwithitscentralblackhole.
Measurementsofthistypecanprovideuswithastatisticalmeasureofhowmanygalaxiesaretheresultsofamerger,andthushelptounderstandtheevolutionoftheuniverse.
Inaddition,SMBHBsaredestinedtomergeinaburstofstronggravitationalwaveradiations:thosethatstilleludedetectionandforwhichscientistsarebuildingmoreandmoresensitivetelescopes.
AcoupleofSMBHBshavebeendirectlydetectedandafewobservationalevidencesfortheirexistencesinAGNsarepresent.
However,mostSMBHBsmayformatgas-poorgalacticnucleibutareverychallengingtodiscoverthem.
HereIwilltalkaboutourtheoreticalinvestigationsabouthowtomeasurethemwithstellartidaldisruptionsandpresentourdiscoveryofthefirstpairofSMBHBinnormalgalaxies.
Attheend,Iwilldiscusshowmanysimilarsystemswewouldexpecttodetectinthefuture.
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