Quasar Feedback in Galaxies

Transcription

1 Quasar Feedback in Galaxies Philip Hopkins Lars Hernquist, Norm Murray, Eliot Quataert, Todd Thompson, Dusan Keres, Chris Hayward, Stijn Wuyts, Kevin Bundy, Desika Narayanan, Ryan Hickox, Rachel Somerville, & more

2 Every massive galaxy hosts a supermassive black hole Mass accreted in ~couple bright quasar phase(s) (Soltan, Salucci+, Tremaine+, Yu & Lu, PFH, Shankar, et al.)

3 Scatter in the mass that gets down to MBH Gebhardt et al. Ferrarese et al. Haring & Rix Tremaine Marconi & Hunt Scatter in M BH BHs must somehow self-regulate PFH, Murray, & Thompson 2009

4 What can AGN Feedback Do For You? Oppenheimer & Dave Number Density Observed No AGN FB Spheroid & BH Formation Times: Sharp color bimodality Lowering mass of >M* galaxies Removing/heating gas in groups Marconi et al. PFH, Lidz, et al. 2007

5 Transition vs. Maintenance Quasar mode (high mdot) Radio mode (low mdot) Move mass from Blue to Red? Keep it Red Rapid (~10 7 yr) Long-lived (~Hubble time) Small(er) scales (~pc-kpc) Large (~halo) scales Morphological Transformation Subtle morphological change Gas-rich/Dissipational Mergers? Hot Halos & Dry Mergers Regulates Black Hole Mass Regulates Galaxy Mass

6 Star Formation BH Growth Sanders, Scoville, many subsequent

7 What Can Quasar Feedback Do?

8 Feedback Energy: SILK & REES 98 L = r Ṁ BH c 2 ( r 0.1)! E rad 0.1 M BH c erg (M BH 10 8 M ) E gal M gal 2 (10 11 M ) (200 km/s) erg

9 M-sigma Suggests Self-Regulated BH Growth PREVENTS RUNAWAY BLACK HOLE GROWTH Black hole growth without feedback with feedback Di Matteo et al. 2005

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12 Quasar Outflows: Heating Halo Gas SHUT DOWN COOLING AND/OR SET UP RADIO MODE McCarthy et al. 2010,11 No Feedback Cox et al Quasar Feedback With Quasar No Quasar

13 Expulsion of Gas Turns off Star Formation ENSURES ELLIPTICALS ARE SUFFICIENTLY RED & DEAD? Springel et al No AGN Feedback With AGN Feedback

14 But Does Quasar Mode Feedback Exist?

15 Optical (Stars) NGC 5728 OIII Ionization Cone

16 Broad Absorption Line Quasars Preferentially in high-l quasars Covering factor ~20% ~12 (16) objects now, 10/12 confirmed: Ṁ wind v & L AGN /c L wind & 0.01 L AGN R wind 1 20 kpc v 1000 km s 1 Ṁ wind M yr 1 Arav et al. Wampler et al Hamann et al de Kool et al. 2001&2 Korista et al Moe et al Dunn et al Aoki et al Kaastra et al. 2011

17 Broad wings in Narrow Lines in Type-2 (Narrow-Line) Quasars Laor et al., Crenshaw et al. (lower-luminosity, v ~ km/s) Humphrey et al Green & Zakamska et al Shen et al (Double-Peaked NLRs) Ṁ M /yr Ṁv 1 30 L AGN /c L wind 0.01 L AGN DVBLUE DVRED

18 Ionized Gas Tracers At High-Redshift Pushed By Radio Jets Lehnert et al. 2009,2011 Nesvadba et al. 2010,2011 > 1000 km/s No Radio Jets / Radio Quiet Alexander et al R wind 5kpc v 1000 km/s L wind 0.1 L AGN

19 Molecular Outflows in AGN ULIRGs CO: Rupke & Veilleux 2005,2011 Fischer et al (Mrk 231) Feruglio et al (Mrk 231) Alatalo et al (NGC 1266) Molecular+Ionized Outflows: voutflow R wind 1 4kpc kpc v>500 km s 1 Ṁ wind 1000 M yr 1

20 Molecular Outflows in AGN ULIRGs Sturm et al. 2011: Ṁ M /yr Ṁv 5 30 L AGN /c L wind L AGN

21 Where to now? How Do We Model This?

22 Step 1: Inflow Beginning to directly follow inflow to sub-pc scales PFH & Quataert 2009,10,11 Levine, Gnedin, Kravtsov 09,10 Mayer, Callegari, 09,10

23 Step 1: Inflow Beginning to directly follow inflow to sub-pc scales R < 0.1 pc: ~ few M yr -1 PFH & Quataert 2009,10,11 Levine, Gnedin, Kravtsov 09,10 Mayer, Callegari, 09,10

24 Bars w/in Bars (Shlosman et al. 1989) (PFH & Quataert 2010) It s Bars all the Way Down...

25 Bars w/in Bars (Shlosman et al. 1989) (PFH & Quataert 2010) It s Bars all the Way Down... Derive Instability Rate: Ṁ 10 M yr 1 Disk Total 5/2 1/6 M BH, 8 M gas, 9 R 3/2 0,100

26 (PFH & Quataert 2010) Bars w/in Bars (Shlosman et al. 1989) It s Bars all the Way Down... More accurately... It s Non-axisymmetric Features all the Way Down... Derive Instability Rate: Ṁ 10 M yr 1 Disk Total 5/2 1/6 M BH, 8 M gas, 9 R 3/2 0,100

27 Step 2: Stellar Feedback & the ISM ESA

28 Step 2: Stellar Feedback & the ISM High-resolution (~1pc), molecular cooling (<100 K), SF only at highest densities (n H >1000 cm -3 ) ESA

29 Step 2: Stellar Feedback & the ISM High-resolution (~1pc), molecular cooling (<100 K), SF only at highest densities (n H >1000 cm -3 ) Heating: SNe (II & Ia) Stellar Winds Photoionization (HII Regions) ESA

30 Step 2: Stellar Feedback & the ISM High-resolution (~1pc), molecular cooling (<100 K), SF only at highest densities (n H >1000 cm -3 ) Heating: SNe (II & Ia) Stellar Winds Photoionization (HII Regions) Explicit Momentum Flux: Radiation Pressure P rad L c (1 + IR) SNe P SNe ĖSNe v 1 ejecta Stellar Winds P W Ṁv wind ESA

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32 Do we still need Quasar Mode Feedback? 100 Springel et al No Quasar Feedback With Quasar Feedback

33 Do we still need Quasar Mode Feedback? 100 Springel et al Stellar Feedback, No Quasar No Quasar Feedback With Quasar Feedback

34 Step 3: Physical Sources of AGN Feedback mechanical (jets & winds) & radiative Jets heat IGM/ICM (low ρ), but not dense ISM Winds BAL-QSO winds equatorial Ṗ up to ~ 5L/c (Arav+) Photons UV: Ṗ ~ L/c (absorbed by dust): κuv ~ 10 3 cm 2 g -1 ~ 10 3 e scatt FIR: Ṗ ~ τl/c (τ ~ dust FIR optical depth ~ ): κfir ~10 e scatt Compton Heating (only low density gas) Outstanding Problem: Which Dominates? Physics very difft for ISM & IGM ESA

35 BAL Winds as a Quasar Feedback Mechanism Proga et al ; Kurosawa et al L/LEdd >~ 0.1 Covering factor ~10-30% z ~12 (16) objects now, 10/12 confirmed: Ṁ wind v & L AGN /c L wind & 0.01 L AGN Launched at < pc Ṁ launch ṀBH z v launch 30, 000 km/s ESA R

36 BAL Winds on ~1pc - 1kpc scales: PFH in prep Wada et al. No BAL Winds With BAL Winds Ṁ launch (0.1 pc) = 0.5 ṀBH v launch (0.1 pc) = 10, 000 km/s

37 BAL Winds as a Quasar Feedback Mechanism SILK & REES 1998, MURRAY ET AL. 2005, MANY MORE Momentum Flux: L c & F grav GMM g r 2 L c > GMM g r 2 Shut Down Accretion When: L max / M BH / 4 if momentum flux ~ few L/c, predicts normalization of M-s 4 M BH 10 8 M 200 km/s

38 BAL Winds on Galactic Scales CAN IT REALLY AFFECT STAR FORMATION? Novak et al. 2010,11 Debuhr, Ma, Quataert 2010,11 Recover M-s Normalization ~ (efficiency) -1 Launch ~1000 km/s tail in winds Only Long-Range Feedback Suppress SFR with BAL winds

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40 Summary Quasar feedback is here to stay BAL Winds + Jets + Radiation Pressure on Dust +??? =??? Strong arguments that this regulates BH Mass: Sets MBH-s Less clear how it impacts the galaxy BUT, depletion times ~1 Myr are hard to ignore! Inflows: Stuff within Stuff : Cascade of instabilities with diverse morphology Nuclear starbursts & powering of SMGs & ULIRGs Determines structure & kinematics of elliptical galaxies Outflows: Towards a Predictive Model l BAL Winds: CAN explain MBH-s WILL suppress SFRs SHOULD heat & clear IGM & Proto-Group Environments l Quasar Jets: WHEN PRESENT, probably even stronger effects Probably jet-driven winds, not direct jet heating l