超大質(zhì)量雙黑洞系統(tǒng)中的吸積盤-formationand(已改無錯字)
2023-03-09 02:29:30 本頁面
【正文】 he accretion diskn The outer boundary of the gap:n The inner boundary:Lin Papaloizou, 1986, ApJr=R/R0。 rs=、 Removal of matter in the inner accretion disk (Liu, Wu, Cao, 2023, MNRAS)Binarydisk resonant interactionDisk truncation due to SMBBHs coalescence? When the SMBBHs merge, the inner diskdisappears and leaves a big hole with a truncation radius (Liu, Wu, Cao, 2023, MNRAS):Refilling timescale:Interruption of jet formation in Doubledouble radio galaxies (DDRGs) (Liu, Wu, Cao, 2023, MNRAS)DDRG 3C219 with hot spots in the outer lobesDDRG J0116473 with winged feature (?)～ 110% FRIIs觀測、理論對比 (Liu et al 03)n 觀測 ： Interruption of jet formation in DDRGs– 理論 ：吸積盤內(nèi)區(qū)被次黑洞所剔除導(dǎo)致噴流形成短暫中止n 觀測 ： Two pairs of wellaligned radio lobes– 理論 ：雙黑洞軌道面合并前已與吸積盤共面，雙黑洞的并合不會明顯改變黑洞自轉(zhuǎn)軸方向，所以新老噴流方向基本一致n 觀測 ：只在低亮度的 FRII射電星系中發(fā)現(xiàn)– 理論 ：超大質(zhì)量雙黑洞只有在與標(biāo)準(zhǔn)吸積盤相互作用時(shí)才導(dǎo)致吸積盤內(nèi)區(qū)被清空。當(dāng)雙黑洞并合時(shí)，星系進(jìn)入其中老年時(shí)期，所以相對較暗n 觀測 ： Interruption time scale: ~ Myr– 理論 ：當(dāng)吸積盤物質(zhì)重新充滿內(nèi)區(qū)時(shí)新噴流產(chǎn)生。外盤從大約 500rG處因粘滯而緩慢填滿整個內(nèi)區(qū)所需要時(shí)間為t=r/vr~1Myr、 Periodic outbursts in AGNs (Liu Wu, 2023, AA。 Zhao, Liu, Wu, 2023, AA, in preparation)? Hydrodynamics? Periodic outbursts due to (1) binarydisk interaction, (2) precession of jet orientation and (3) motion of plasma in helical jets in AGNs ? doublepeaked outbursts if accretion is advection dominated (ADAF)? Lowluminosity AGNs (. BL Lac objects)? One is thermal and the other is synchrotron emission from jets? singlepeaked outbursts if accretion disk is a
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