The physics The physics of AGN jets of AGN jets from 3D - - PowerPoint PPT Presentation

▶
the physics the physics of agn jets of agn jets from 3d
SMART_READER_LITE
LIVE PREVIEW

The physics The physics of AGN jets of AGN jets from 3D - - PowerPoint PPT Presentation

May 05, 2023 424 likes •628 views

The physics The physics of AGN jets of AGN jets from 3D simulations from 3D simulations Salvatore Cielo Salvatore Cielo with: with: J. Silk (IAP|JHU) J. Silk (IAP|JHU) M. Volonteri (IAP) M. Volonteri (IAP) V. Antonuccio-Delogu (INAF)

slide-1
SLIDE 1

The physics The physics of AGN jets

  • f AGN jets

from 3D simulations from 3D simulations

Salvatore Cielo Salvatore Cielo

with: with:

  • J. Silk (IAP|JHU)
  • J. Silk (IAP|JHU)
  • M. Volonteri (IAP)
  • M. Volonteri (IAP)
  • V. Antonuccio-Delogu (INAF)
  • V. Antonuccio-Delogu (INAF)
  • A. V. Macciò (NYU)
  • A. V. Macciò (NYU)
slide-2
SLIDE 2

12 Nov 2015 12 Nov 2015 Salvo Cielo Salvo Cielo, IAP - , IAP - AGN Catania 2 2

Brightest source! Brightest source! 10

1048

48 erg/s

erg/s

Active Galactic Nuclei

Interesting for: Interesting for:

  • MHD, GR

MHD, GR

  • BH accretion/growth

BH accretion/growth

  • UHE-CR (extragalactic)

UHE-CR (extragalactic)

  • high-z “fmashlights”

high-z “fmashlights”

  • …

… feedback! feedback!

Powered by SMBH Powered by SMBH

unifjed model! unifjed model!

B.W. Carroll, D.A. Ostlie B.W. Carroll, D.A. Ostlie An introduction to modern astrophysics An introduction to modern astrophysics

SC SC PhD thesis PhD thesis

slide-3
SLIDE 3

12 Nov 2015 12 Nov 2015 Salvo Cielo Salvo Cielo, IAP - , IAP - AGN Catania 3 3

Chandra's Perseus cluster (from Fabian12)

  • n AGN Feedback

AGN everywhere! AGN everywhere!

Radio Galaxy Cyg A (nasa.gov) Artist's impression Artist's impression

  • f a powerful QSO
  • f a powerful QSO

like APM 08279+5255 like APM 08279+5255 (nasa.gov) (nasa.gov) Radio Galaxy Cyg A (nasa.gov) Radio Galaxy Cyg A (nasa.gov) Radio Galaxy Cyg A (nasa.gov)

mechanical mechanical (jets, cavities) (jets, cavities) Radiative/wind Radiative/wind

McConnell McConnell & Ma '13 & Ma '13

BH/gxy BH/gxy co-evolution. co-evolution. Is it feedback? Is it feedback?

slide-4
SLIDE 4

12 Nov 2015 12 Nov 2015 Salvo Cielo Salvo Cielo, IAP - , IAP - AGN Catania 4 4

AGN feedback in simulations 1/2

Launching

(AU scale)

Hawley, Fendt + 15 Sadowsky+15 Sadowsky+15

  • (GR)MHD jets from BH/disks
  • BZ/BP process; accretion

effjciency sets jets or winds.

Gaspari + 13

  • Jets reproduce source shapes
  • “Gentler” winds create cyclic

starforming cold gas phase

Li + 15

In isolated halos

(10-100 kpc)

slide-5
SLIDE 5

12 Nov 2015 12 Nov 2015 Salvo Cielo Salvo Cielo, IAP - , IAP - AGN Catania 5 5 Kannan + '14

  • vercooling
  • vercooling

Jet Feedback may be

AGN feedback in simulations 2/2

Gxy formation and cosmology [Mpc and more] SF is suppressed. AGN feedback avoids overcooling, though often subgrid. E.g. Sijacki+15, Dubois+14

Positive

(e.g. Gaibler+12 Bieri+15 )

Negative

(e.g. Tortora + '09)

slide-6
SLIDE 6

12 Nov 2015 12 Nov 2015 Salvo Cielo Salvo Cielo, IAP - , IAP - AGN Catania 6 6

+ Hot Gas 5x106K Physics: hydro + gravity + radiative cooling Software: FLASH, Adaptive Mesh (75 pc res.) Geometry: multiple (up to 5) jet events, random angles few Myr break DM DM galactic: ~1013 Msun + Bipolar Jet ~1044erg/s Next: add stars stars. + Cold Clumps T.I.S. 104 K

Our Simulation Model

slide-7
SLIDE 7

12 Nov 2015 12 Nov 2015 Salvo Cielo Salvo Cielo, IAP - , IAP - AGN Catania 7 7

Why fmipping jets?

  • SMBH spin fmip or backfmows

x-shaped radio galaxies:

  • constrain jet parameters

(e.g. Guo + '14)

  • multiple pairs

X-ray cavities in clusters Chandra's Chandra's Perseus “Halloween” Perseus “Halloween” ~ 150 kpc ~ 150 kpc

Merritt + '02, Merritt + '02, Roberts + '15 Roberts + '15

slide-8
SLIDE 8

12 Nov 2015 12 Nov 2015 Salvo Cielo Salvo Cielo, IAP - , IAP - AGN Catania 8 8

Cavities = hot air balloons

Paris, 1783 Paris, 1783

slide-9
SLIDE 9

12 Nov 2015 12 Nov 2015 Salvo Cielo Salvo Cielo, IAP - , IAP - AGN Catania 9 9

Recap: with a single Jet (Cielo+14)

  • 1. Bow shock region
  • 1. Bow shock region

develops develops

  • 2. Turbulent “cocoon”
  • 2. Turbulent “cocoon”
  • 3. Jets open into
  • 3. Jets open into

“radio” lobes/bubbles “radio” lobes/bubbles (if jet stops) (if jet stops)

slide-10
SLIDE 10

12 Nov 2015 12 Nov 2015 Salvo Cielo Salvo Cielo, IAP - , IAP - AGN Catania 10 10

~50 kpc ~50 kpc Density slice Density slice Many Jets! (in prep.) “ “fmipped” jets fmipped” jets

  • More

More isotropic isotropic feedback feedback

  • Trigger

Trigger much much backfmow backfmow

cold clumps cold clumps

  • Stop jet for a bit

Stop jet for a bit asymmetry → asymmetry →

  • Compressed/heated

Compressed/heated → → + +/ /- feedback

  • feedback
slide-11
SLIDE 11

12 Nov 2015 12 Nov 2015 Salvo Cielo Salvo Cielo, IAP - , IAP - AGN Catania 11 11

Results: Results: cold cold gas mass gas mass

Steady positive feedback Steady positive feedback BUT BUT < 1% total → < 1% total → quite dense! quite dense!

slide-12
SLIDE 12

12 Nov 2015 12 Nov 2015 Salvo Cielo Salvo Cielo, IAP - , IAP - AGN Catania 12 12

Results: cold gas compression

slide-13
SLIDE 13

12 Nov 2015 12 Nov 2015 Salvo Cielo Salvo Cielo, IAP - , IAP - AGN Catania 13 13

Results: cold gas compression

slide-14
SLIDE 14

12 Nov 2015 12 Nov 2015 Salvo Cielo Salvo Cielo, IAP - , IAP - AGN Catania 17 17

28 Myr 28 Myr

  • Mach 1 bow-shock

Mach 1 bow-shock

  • Mach 20 jets

Mach 20 jets (by constr.)

(by constr.)

10 Myr 10 Myr

  • 75000 km/s jets

75000 km/s jets

  • ~2000 km/s cocoon

~2000 km/s cocoon

  • Is it

Is it X-shaped X-shaped? (I'd say ? (I'd say yes yes) )

  • Is it fmip or

Is it fmip or backfmow backfmow? Need → ? Need → synchrotron synchrotron maps! maps!

Results: outfmow velocity

slide-15
SLIDE 15

12 Nov 2015 12 Nov 2015 Salvo Cielo Salvo Cielo, IAP - , IAP - AGN Catania 18 18

U.F.O.s (Do you believe?)

Costa+15 Costa+15

?? Cooling effjciency

Important for cosm. simulations where this is all subgrid! Compton? Only above 1010 K Tombesi+15 Tombesi+15 Preliminary! Preliminary!

slide-16
SLIDE 16

12 Nov 2015 12 Nov 2015 Salvo Cielo Salvo Cielo, IAP - , IAP - AGN Catania 19 19

Results: backfmows (one jet)

Cielo+14 Sketch by V. Sketch by V. Antonuccio Antonuccio

Potential fuel for the SMBH...

(but accretion disk not resolved)

slide-17
SLIDE 17

12 Nov 2015 12 Nov 2015 Salvo Cielo Salvo Cielo, IAP - , IAP - AGN Catania 20 20

Results: backfmows (many jets)

Same rate of Same rate of ~1 M ~1 Msun

suny

y-1

  • 1

lasts lasts 25 Myr 25 Myr instead of 1 instead of 1

slide-18
SLIDE 18

12 Nov 2015 12 Nov 2015 Salvo Cielo Salvo Cielo, IAP - , IAP - AGN Catania 21 21

Results: soft-xray images

slide-19
SLIDE 19

12 Nov 2015 12 Nov 2015 Salvo Cielo Salvo Cielo, IAP - , IAP - AGN Catania 25 25

Conclusions

AGN jets

  • produce enegy-conserving outfmows
  • backfmows can shape galaxy

Multiple jets

  • reproduce multiple Xray cavities
  • greatly enhance backfmows

Our cold gas model

  • is compressed

→ positive feedback

  • is very dense!

Thank you! Thank you!