Ram-pressure Stripping of a Kicked Hill Sphere: Prompt Electromagnetic Emission from the Merger of Stellar Mass Black Holes in an AGN Accretion Disk
Accretion disks around supermassive black holes (SMBHs) are promising sites for stellar mass black hole (BH) mergers due to mass segregation and merger acceleration by disk gas torques. Here we show that a gravitational-wave (GW) kick at BH merger causes ram-pressure stripping of gas within the BH H...
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| Veröffentlicht in: | Astrophysical journal. Letters 2019-10, Vol.884 (2), p.L50 |
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| container_title | Astrophysical journal. Letters |
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| creator | McKernan, B. Ford, K. E. S. Bartos, I. Graham, M. J. Lyra, W. Marka, S. Marka, Z. Ross, N. P. Stern, D. Yang, Y. |
| description | Accretion disks around supermassive black holes (SMBHs) are promising sites for stellar mass black hole (BH) mergers due to mass segregation and merger acceleration by disk gas torques. Here we show that a gravitational-wave (GW) kick at BH merger causes ram-pressure stripping of gas within the BH Hill sphere. If RH ≥ H, the disk height, an off-center UV flare at aBH ∼ 103rg, emerges within tUV ∼ O(2 days)(aBH/103rg)(MSMBH/108M )(vkick/102 km s−1) postmerger and lasts O(RH/vkick) ∼ O(5tUV). The flare emerges with luminosity O(1042erg s−1)(tUV/2days)−1(MHill/1M )(vkick/102 km s−1)2. Active galactic nucleus optical/UV photometry is altered and asymmetric broad emission line profiles can develop after weeks. If RH < H, detectability depends on disk optical depth. Follow-up by large optical sky surveys is optimized for small GW error volumes and for Laser Interferometer Gravitational-Wave Observatory/Virgo triggers >50M . |
| doi_str_mv | 10.3847/2041-8213/ab4886 |
| format | Article |
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Active galactic nucleus optical/UV photometry is altered and asymmetric broad emission line profiles can develop after weeks. If RH < H, detectability depends on disk optical depth. Follow-up by large optical sky surveys is optimized for small GW error volumes and for Laser Interferometer Gravitational-Wave Observatory/Virgo triggers >50M .</description><identifier>ISSN: 2041-8205</identifier><identifier>EISSN: 2041-8213</identifier><identifier>DOI: 10.3847/2041-8213/ab4886</identifier><language>eng</language><publisher>Austin: The American Astronomical Society</publisher><subject>Acceleration ; Accretion disks ; Active galactic nuclei ; Black holes ; Emission ; Emission lines ; Gravitation ; Gravitational wave astronomy ; Gravitational waves ; Interferometers ; Luminosity ; Optical analysis ; Optical thickness ; Ram pressure ; Sky surveys (astronomy) ; Space telescopes ; Stellar flares ; Stellar mass ; Stellar mass accretion ; Stripping ; Supermassive black holes</subject><ispartof>Astrophysical journal. Letters, 2019-10, Vol.884 (2), p.L50</ispartof><rights>2019. The American Astronomical Society. 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If RH ≥ H, the disk height, an off-center UV flare at aBH ∼ 103rg, emerges within tUV ∼ O(2 days)(aBH/103rg)(MSMBH/108M )(vkick/102 km s−1) postmerger and lasts O(RH/vkick) ∼ O(5tUV). The flare emerges with luminosity O(1042erg s−1)(tUV/2days)−1(MHill/1M )(vkick/102 km s−1)2. Active galactic nucleus optical/UV photometry is altered and asymmetric broad emission line profiles can develop after weeks. If RH < H, detectability depends on disk optical depth. Follow-up by large optical sky surveys is optimized for small GW error volumes and for Laser Interferometer Gravitational-Wave Observatory/Virgo triggers >50M .</description><subject>Acceleration</subject><subject>Accretion disks</subject><subject>Active galactic nuclei</subject><subject>Black holes</subject><subject>Emission</subject><subject>Emission lines</subject><subject>Gravitation</subject><subject>Gravitational wave astronomy</subject><subject>Gravitational waves</subject><subject>Interferometers</subject><subject>Luminosity</subject><subject>Optical analysis</subject><subject>Optical thickness</subject><subject>Ram pressure</subject><subject>Sky surveys (astronomy)</subject><subject>Space telescopes</subject><subject>Stellar flares</subject><subject>Stellar mass</subject><subject>Stellar mass accretion</subject><subject>Stripping</subject><subject>Supermassive black holes</subject><issn>2041-8205</issn><issn>2041-8213</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNp1kMtOwzAQRSMEEs89y5GQWBFw7CR12ZVSKKI8RGFtDe6kuHUTY6cL_oMPxlURbGDl0ejc49FNksOMnQqZd844y7NU8kyc4WsuZbmR7PysNn9mVmwnuyHMGOOszORO8vmEi9R5CmHpCcatN86ZegpNBQi3Rs9pAkNjLYzdG3k6h0ffLFwLA0u6jSNOa2qNhsHChGCaGqq4hPaN4I78lPxKNG7JWvRwhyHAhUU9h2FjKYCpAWvoXd9DT2sfPTF_acJ8P9mq0AY6-H73kperwXN_mI4erm_6vVGq87zTppwLUXAspCw0FxwrzTPSHUmExHSuu6KjC5TEWERQyrxb6AlH8VrKsswnXbGXHK29zjfvSwqtmjVLX8cvFRdlUUopZBkptqa0b0LwVCnnzQL9h8qYWnWvVuWqVdFq3X2MHK8jpnG_TnQzq-IZiqtRwZSbVBE8-QP81_sF-D6R8Q</recordid><startdate>20191020</startdate><enddate>20191020</enddate><creator>McKernan, B.</creator><creator>Ford, K. 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| subjects | Acceleration Accretion disks Active galactic nuclei Black holes Emission Emission lines Gravitation Gravitational wave astronomy Gravitational waves Interferometers Luminosity Optical analysis Optical thickness Ram pressure Sky surveys (astronomy) Space telescopes Stellar flares Stellar mass Stellar mass accretion Stripping Supermassive black holes |
| title | Ram-pressure Stripping of a Kicked Hill Sphere: Prompt Electromagnetic Emission from the Merger of Stellar Mass Black Holes in an AGN Accretion Disk |
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