Impact of relativistic jets on the ISM of their host galaxy

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1 Impact of relativistic jets on the ISM of their host galaxy Dipanjan Mukherjee Universita di Torino with Geoff Bicknell Alex Wagner Ralph Sutherland

2 AGN feedback and galaxy AGN feedback crucial to match galaxy mass function Can be in the form of winds (Quasar mode/establishment mode) Or relativistic jets (radio mode/ establishment mode) no AGN Mrk 231, Rupke et al M87 AGN 2

3 Some basic questions What is the effect of relativistic jets at galactic scales? Over what scales? Do the jets affect just a narrow channel or a wider region? Outflow? or turbulence? (both) How is SFR regulated? Is it ejective (outflows)? Preventive (turbulence)? Passive evolution (strangulation?)? (all?) What are the observational signatures of jet-ism interaction? 3

4 The set up We perform simulations (with PLUTO) of 3D relativistic jets from AGNs interacting with a turbulent ISM Turbulent ISM: fractal log normal density distribution with Gaussian velocity dispersion (values similar to forster-schreiber et al 2009). Different ISM densities, morphology (disk + spherical), jet power. Domain size ~ 5kpc, resolution ~ 6pc. External gravity (DM+Baryons). Atomic cooling via MAPPINGS V. 4

5 Simulation list Spherical gas distriution Densities: nw0 = cm -3 Power = ergs -1 Disks Densities: nw0 = cm -3 Power = ergs -1 Θ = 0, 20, 45, 70 Gas mass ~ M No Geometry Power Log (P) Density (nw0, in cc) 1 Spherical Inclination 9 Disk IC

z axis in kpc The dentist drill in spherical gas distribution Density High power P45, nw150 Density Low power P44, nw150 Temperature P44, nw150 Jets couple strongly with host's ISM.

6 z axis in kpc The dentist drill in spherical gas distribution Density High power P45, nw150 Density Low power P44, nw150 Temperature P44, nw150 Jets couple strongly with host's ISM. Launch fast multiphase outflows but not enough to escape. Low power jets are important! Couple more with the ISM, will induce more turbulence and more numerous! Gas distribution spherical. Easier to couple. Disks? Mukherjee et al. 2016,

7 Feedback in disk galaxies Pjet=10 45 ergs -1 Central outflow < 1kpc Compression & shocks on outer edges Pjet=10 45 ergs -1 Contours: β=0.4c,0.9c arxiv:

8 Feedback in disk galaxies Pjet=10 46 ergs -1 Y [kpc] Y [kpc] arxiv:

Effects on kinematics Pj: 10 46 nw: 200 cm -3 Early evolution: A sharp increase in dispersion of 3C shocked 326, Nesvadba gas et with al. 2011 Away from jet axis radius, traces evolving bubble.

9 Effects on kinematics Pj: nw: 200 cm -3 Early evolution: A sharp increase in dispersion of 3C shocked 326, Nesvadba gas et with al Away from jet axis radius, traces evolving bubble. Along jet axis Pj: nw: 200 cm -3 Late times: Velocity dispersion is increased by several times its initial value throughout the disc, up to kms -1. Depends on jet power, ISM density nw: 100 cm -3 nw: 200 cm -3 nw: 400 cm -3 3C 293 Mahony et al arxiv:

10 Inclined jets Pjet=10 45 ergs -1,Θ=0 Pjet=10 45 ergs -1,Θ=45 Pjet=10 45 ergs -1,Θ=70 Inclined jets couple more with turbulent disc More clouds are lifted off the disc The cavity is filled with ablated thermal gas + non-thermal plasma 10

11 Inclined jets 3C 293 Mahony et al NGC 3079 Cecil+01, Veilleux+ 99 Inclined at 45 0 Dopita et al

Inclined jets: IC 5063 10 44 erg s -1 ALMA: Morganti et al 2015 Z (kpc) HST: Dasyra et al 2015 CO OIII + Hβ ALMA: Morganti et al 2015 X (kpc)

12 Inclined jets: IC erg s -1 ALMA: Morganti et al 2015 Z (kpc) HST: Dasyra et al 2015 CO OIII + Hβ ALMA: Morganti et al 2015 X (kpc) IC 5063 has a jet going through its disk. Multiwavelength observations (ALMA, HST, VLT) show shock excited outflowing gas Position-velocity 12

13 Z (kpc) Inclined jets: IC 5063 Mukherjee et al. 2018, arxiv: erg s erg s erg s -1 13

14 Inclined jets: IC 5063 Position-velocity The overall increased dispersion matches ALMA obs, indicates clearing due to expanding bubble. Spiky features in the PV is reproduced, indicates jet interaction with clumpy ISM Mukherjee et al. 2018, arxiv: P=10 45 erg s -1 jet has increased dispersion, and non-uniform PV 14

15 Quenching via turbulence? Velocity dispersion wtih time Increase in velocity dispersion 3C 326 (and MOHEGS) NGC 1266 Nesvadba et al. 2010, 11 Alatalo et al. 2011, 15 15

16 Positive feedback? nw:400 nw:200 Pj: Density enhancement due to radiative shocks nw: 100 Pj: Jets with P=10 46 erg/s show a significant enhancement. Θ=70 Θ=45 Inclined jets couple more, higher enhancement. nw: 100 nw: 200, Θ=0 Low density ISM show a decline after an initial increase 16

17 Star formation surface density? P: erg s -1,Θ=0 = arxiv:

18 Star formation surface density? P: erg s -1,Θ=45 = arxiv:

19 Concluding Jets launch fast multiphase outflows over several kpc but not enough to escape. Low power jets are important! Couple more with the ISM, will induce more turbulence and more numerous! Jets make disks turbulent. Inclined jets more. SFR will be regulated by shocks from the energy bubble and turbulence, rather than mass ejection. Initial SFR burst possible. Thank you! 19

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Spiky features in the PV is reproduced, indicates jet interaction with clumpy ISM

22 Inclined jets: IC 5063 Position-velocity The overall increased dispersion matches ALMA obs, indicates clearing due to expanding bubble. Spiky features in the PV is reproduced, indicates jet interaction with clumpy ISM Mukherjee et al. 2018, arxiv: P=10 45 erg s -1 jet has increased dispersion, and non-uniform PV 22

23 Simulation list Spherical gas distriution Densities: nw0 = cm -3 Power = ergs -1 Gas mass ~ M Disks Densities: nw0 = cm -3 Power = ergs -1 Θ = 0, 20, 45, 70 Gas mass ~ M

24 Wide-angled sub-relativistic outflow Launch vertical sub-relativistic wide-angles outflow along the minor axis (chimney effect) 24

Molecular gas & AGN feedback in brightest cluster galaxies

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