@article{barai_quasar_2017,
	title = {Quasar outflows at \$z {\textbackslash}geq 6\$: the impact on the host galaxies},
	volume = {1707},
	shorttitle = {Quasar outflows at \$z {\textbackslash}geq 6\$},
	url = {http://adsabs.harvard.edu/abs/2017arXiv170703014B},
	abstract = {We investigate quasar outflows at \$z {\textbackslash}geq 6\$ by performing zoom-in cosmological hydrodynamical simulations. By employing the SPH code GADGET-3, we zoom in the \$2 R\_\{200\}\$ region around a \$2 {\textbackslash}times 10{\textasciicircum}\{12\} M\_\{{\textbackslash}odot\}\$ halo at \$z = 6\$, inside a \$(500 {\textasciitilde} \{{\textbackslash}rm Mpc\}){\textasciicircum}3\$ comoving volume. We compare the results of our AGN runs with a control simulation in which only stellar/SN feedback is considered. Seeding \$10{\textasciicircum}5
M\_\{{\textbackslash}odot\}\$ BHs at the centers of \$10{\textasciicircum}\{9\} M\_\{{\textbackslash}odot\}\$ halos, we find the following results. BHs accrete gas at the Eddington rate over \$z = 9 - 6\$. At \$z = 6\$, our most-massive BH has grown to \$M\_\{{\textbackslash}rm BH\} = 4 {\textbackslash}times 10{\textasciicircum}9 M\_\{{\textbackslash}odot\}\$. Fast (\$v\_\{r\} {\textgreater} 1000\$ km/s), powerful (\${\textbackslash}dot\{M\}\_\{{\textbackslash}rm out\} {\textbackslash}sim 2000 M\_\{{\textbackslash}odot\}\$/yr) outflows of shock-heated low-density gas form at \$z {\textbackslash}sim 7\$, and propagate up to hundreds kpc. Star-formation is quenched over \$z = 8 - 6\$, and the total SFR (SFR surface density near the galaxy center) is reduced by a factor of \$5\$ (\$1000\$). We analyse the relative contribution of multiple physical process: (i) disrupting cosmic filamentary cold gas inflows, (ii) reducing central gas density, (iii) ejecting gas outside the galaxy; and find that AGN feedback has the following effects at \$z = 6\$. The inflowing gas mass fraction is reduced by \${\textbackslash}sim 12 {\textbackslash}\%\$, the high-density gas fraction is lowered by \${\textbackslash}sim 13 {\textbackslash}\%\$, and \${\textbackslash}sim 20 {\textbackslash}\%\$ of the gas outflows at a speed larger than the escape velocity (\$500\$ km/s). We conclude that quasar-host galaxies at \$z {\textbackslash}geq 6\$ are accreting non-negligible amount of cosmic gas, nevertheless AGN feedback quenches their star formation dominantly by powerful outflows ejecting gas out of the host galaxy halo.},
	journal = {ArXiv e-prints},
	author = {Barai, Paramita and Gallerani, Simona and Pallottini, Andrea and Ferrara, Andrea and Marconi, Alessandro and Cicone, Claudia and Maiolino, Roberto and Carniani, Stefano},
	month = jul,
	year = {2017},
	keywords = {Astrophysics - Astrophysics of Galaxies, Astrophysics - High Energy Astrophysical Phenomena},
	pages = {arXiv:1707.03014},
}

{"_id":"TwSBLZGWsrx6mtQB7","bibbaseid":"barai-gallerani-pallottini-ferrara-marconi-cicone-maiolino-carniani-quasaroutflowsatztextbackslashgeq6theimpactonthehostgalaxies-2017","author_short":["Barai, P.","Gallerani, S.","Pallottini, A.","Ferrara, A.","Marconi, A.","Cicone, C.","Maiolino, R.","Carniani, S."],"bibdata":{"bibtype":"article","type":"article","title":"Quasar outflows at \\$z {\\textbackslash}geq 6\\$: the impact on the host galaxies","volume":"1707","shorttitle":"Quasar outflows at \\$z {\\textbackslash}geq 6\\$","url":"http://adsabs.harvard.edu/abs/2017arXiv170703014B","abstract":"We investigate quasar outflows at \\$z {\\textbackslash}geq 6\\$ by performing zoom-in cosmological hydrodynamical simulations. By employing the SPH code GADGET-3, we zoom in the \\$2 R_\\{200\\}\\$ region around a \\$2 {\\textbackslash}times 10{\\textasciicircum}\\{12\\} M_\\{{\\textbackslash}odot\\}\\$ halo at \\$z = 6\\$, inside a \\$(500 {\\textasciitilde} \\{{\\textbackslash}rm Mpc\\}){\\textasciicircum}3\\$ comoving volume. We compare the results of our AGN runs with a control simulation in which only stellar/SN feedback is considered. Seeding \\$10{\\textasciicircum}5 M_\\{{\\textbackslash}odot\\}\\$ BHs at the centers of \\$10{\\textasciicircum}\\{9\\} M_\\{{\\textbackslash}odot\\}\\$ halos, we find the following results. BHs accrete gas at the Eddington rate over \\$z = 9 - 6\\$. At \\$z = 6\\$, our most-massive BH has grown to \\$M_\\{{\\textbackslash}rm BH\\} = 4 {\\textbackslash}times 10{\\textasciicircum}9 M_\\{{\\textbackslash}odot\\}\\$. Fast (\\$v_\\{r\\} {\\textgreater} 1000\\$ km/s), powerful (\\${\\textbackslash}dot\\{M\\}_\\{{\\textbackslash}rm out\\} {\\textbackslash}sim 2000 M_\\{{\\textbackslash}odot\\}\\$/yr) outflows of shock-heated low-density gas form at \\$z {\\textbackslash}sim 7\\$, and propagate up to hundreds kpc. Star-formation is quenched over \\$z = 8 - 6\\$, and the total SFR (SFR surface density near the galaxy center) is reduced by a factor of \\$5\\$ (\\$1000\\$). We analyse the relative contribution of multiple physical process: (i) disrupting cosmic filamentary cold gas inflows, (ii) reducing central gas density, (iii) ejecting gas outside the galaxy; and find that AGN feedback has the following effects at \\$z = 6\\$. The inflowing gas mass fraction is reduced by \\${\\textbackslash}sim 12 {\\textbackslash}%\\$, the high-density gas fraction is lowered by \\${\\textbackslash}sim 13 {\\textbackslash}%\\$, and \\${\\textbackslash}sim 20 {\\textbackslash}%\\$ of the gas outflows at a speed larger than the escape velocity (\\$500\\$ km/s). We conclude that quasar-host galaxies at \\$z {\\textbackslash}geq 6\\$ are accreting non-negligible amount of cosmic gas, nevertheless AGN feedback quenches their star formation dominantly by powerful outflows ejecting gas out of the host galaxy halo.","journal":"ArXiv e-prints","author":[{"propositions":[],"lastnames":["Barai"],"firstnames":["Paramita"],"suffixes":[]},{"propositions":[],"lastnames":["Gallerani"],"firstnames":["Simona"],"suffixes":[]},{"propositions":[],"lastnames":["Pallottini"],"firstnames":["Andrea"],"suffixes":[]},{"propositions":[],"lastnames":["Ferrara"],"firstnames":["Andrea"],"suffixes":[]},{"propositions":[],"lastnames":["Marconi"],"firstnames":["Alessandro"],"suffixes":[]},{"propositions":[],"lastnames":["Cicone"],"firstnames":["Claudia"],"suffixes":[]},{"propositions":[],"lastnames":["Maiolino"],"firstnames":["Roberto"],"suffixes":[]},{"propositions":[],"lastnames":["Carniani"],"firstnames":["Stefano"],"suffixes":[]}],"month":"July","year":"2017","keywords":"Astrophysics - Astrophysics of Galaxies, Astrophysics - High Energy Astrophysical Phenomena","pages":"arXiv:1707.03014","bibtex":"@article{barai_quasar_2017,\n\ttitle = {Quasar outflows at \\$z {\\textbackslash}geq 6\\$: the impact on the host galaxies},\n\tvolume = {1707},\n\tshorttitle = {Quasar outflows at \\$z {\\textbackslash}geq 6\\$},\n\turl = {http://adsabs.harvard.edu/abs/2017arXiv170703014B},\n\tabstract = {We investigate quasar outflows at \\$z {\\textbackslash}geq 6\\$ by performing zoom-in cosmological hydrodynamical simulations. By employing the SPH code GADGET-3, we zoom in the \\$2 R\\_\\{200\\}\\$ region around a \\$2 {\\textbackslash}times 10{\\textasciicircum}\\{12\\} M\\_\\{{\\textbackslash}odot\\}\\$ halo at \\$z = 6\\$, inside a \\$(500 {\\textasciitilde} \\{{\\textbackslash}rm Mpc\\}){\\textasciicircum}3\\$ comoving volume. We compare the results of our AGN runs with a control simulation in which only stellar/SN feedback is considered. Seeding \\$10{\\textasciicircum}5\nM\\_\\{{\\textbackslash}odot\\}\\$ BHs at the centers of \\$10{\\textasciicircum}\\{9\\} M\\_\\{{\\textbackslash}odot\\}\\$ halos, we find the following results. BHs accrete gas at the Eddington rate over \\$z = 9 - 6\\$. At \\$z = 6\\$, our most-massive BH has grown to \\$M\\_\\{{\\textbackslash}rm BH\\} = 4 {\\textbackslash}times 10{\\textasciicircum}9 M\\_\\{{\\textbackslash}odot\\}\\$. Fast (\\$v\\_\\{r\\} {\\textgreater} 1000\\$ km/s), powerful (\\${\\textbackslash}dot\\{M\\}\\_\\{{\\textbackslash}rm out\\} {\\textbackslash}sim 2000 M\\_\\{{\\textbackslash}odot\\}\\$/yr) outflows of shock-heated low-density gas form at \\$z {\\textbackslash}sim 7\\$, and propagate up to hundreds kpc. Star-formation is quenched over \\$z = 8 - 6\\$, and the total SFR (SFR surface density near the galaxy center) is reduced by a factor of \\$5\\$ (\\$1000\\$). We analyse the relative contribution of multiple physical process: (i) disrupting cosmic filamentary cold gas inflows, (ii) reducing central gas density, (iii) ejecting gas outside the galaxy; and find that AGN feedback has the following effects at \\$z = 6\\$. The inflowing gas mass fraction is reduced by \\${\\textbackslash}sim 12 {\\textbackslash}\\%\\$, the high-density gas fraction is lowered by \\${\\textbackslash}sim 13 {\\textbackslash}\\%\\$, and \\${\\textbackslash}sim 20 {\\textbackslash}\\%\\$ of the gas outflows at a speed larger than the escape velocity (\\$500\\$ km/s). We conclude that quasar-host galaxies at \\$z {\\textbackslash}geq 6\\$ are accreting non-negligible amount of cosmic gas, nevertheless AGN feedback quenches their star formation dominantly by powerful outflows ejecting gas out of the host galaxy halo.},\n\tjournal = {ArXiv e-prints},\n\tauthor = {Barai, Paramita and Gallerani, Simona and Pallottini, Andrea and Ferrara, Andrea and Marconi, Alessandro and Cicone, Claudia and Maiolino, Roberto and Carniani, Stefano},\n\tmonth = jul,\n\tyear = {2017},\n\tkeywords = {Astrophysics - Astrophysics of Galaxies, Astrophysics - High Energy Astrophysical Phenomena},\n\tpages = {arXiv:1707.03014},\n}\n\n","author_short":["Barai, P.","Gallerani, S.","Pallottini, A.","Ferrara, A.","Marconi, A.","Cicone, C.","Maiolino, R.","Carniani, S."],"key":"barai_quasar_2017","id":"barai_quasar_2017","bibbaseid":"barai-gallerani-pallottini-ferrara-marconi-cicone-maiolino-carniani-quasaroutflowsatztextbackslashgeq6theimpactonthehostgalaxies-2017","role":"author","urls":{"Paper":"http://adsabs.harvard.edu/abs/2017arXiv170703014B"},"keyword":["Astrophysics - Astrophysics of Galaxies","Astrophysics - High Energy Astrophysical Phenomena"],"metadata":{"authorlinks":{}}},"bibtype":"article","biburl":"https://bibbase.org/zotero/polyphant","dataSources":["7gvjSdWrEu7z5vjjj"],"keywords":["astrophysics - astrophysics of galaxies","astrophysics - high energy astrophysical phenomena"],"search_terms":["quasar","outflows","textbackslash","geq","impact","host","galaxies","barai","gallerani","pallottini","ferrara","marconi","cicone","maiolino","carniani"],"title":"Quasar outflows at \\$z {\\textbackslash}geq 6\\$: the impact on the host galaxies","year":2017}