Eclipsing the X–ray emitting regions in AGN

Mario Sanfrutos1

In collaboration with:

Giovanni Miniutti1 and Michal Dovciak2

1Centro de Astrobiología, CSIC / INTA, Madrid2Astronomical Institute, Academy of Sciences of the Czech Republic, Prague

The Extremes of Black Hole Accretion | ESAC, June 8, 2015

Mario Sanfrutos X–ray wind variability in ESO 323-G77 June 8, 2015 1 / 12

The innermost regions in AGN: general scheme

Mario Sanfrutos X–ray wind variability in ESO 323-G77 June 8, 2015 2 / 12

MotivationTo probe general relativistic effects by studing X–ray eclipses

Flu

x(a

rbit

rary

un

its)

NGC1365

Risaliti et al. +11

(MNRAS 417, 178–183)

Compton–thin cloud

NH = 3.5×1023cm−2

Aeff = 2 m2 @ 6 keV

Mario Sanfrutos X–ray wind variability in ESO 323-G77 June 8, 2015 3 / 12

The KYNCONV model: introSet of KY relativistic models in Dovciak et al. +04 (ApJS 153, 205–221)

relativistic convolution model

accretion discs spectra

strong gravity regime

obscuration with a circular cloud

Mario Sanfrutos X–ray wind variability in ESO 323-G77 June 8, 2015 4 / 12

The KYNCONV model: main parameters

System inclination → θ0 /deg

Central engine

{

BH spin → a

emissivity index → q

Cloud

position → α, β /GMc2

size → r /GMc2

column density → NH /cm−2 ( phabs, zxipcf)

ionisation → logξ , with ξ / ergcms

(zxipcf)

Mario Sanfrutos X–ray wind variability in ESO 323-G77 June 8, 2015 5 / 12

What we could expectPrevious detections of disc–emission anisotropies?

NGC1365

Risaliti et al. +09 (ApJ 696, 160–171)

SWIFT J2127.4+5654

−5×104 0 5×104 1050

0.1

0.2

0.3

0.4

Cover

ing f

ract

ion

Time (s)

Sanfrutos et al. +13 (MNRAS 436, 1588–1594)

Mario Sanfrutos X–ray wind variability in ESO 323-G77 June 8, 2015 6 / 12

The covering fraction profiles (I)

Cloud position /GM/c^2

Cove

rin

g f

ract

ion

−40−2002040

Cloud radius = 1 rg

0.000

0.005

0.010

0.015

0.020

0.025

0.030

0.035

20 deg

cloud nH = 1e24

40 deg neutral

60 deg

q = 3

−40−2002040

Cloud radius = 6 rg

0.00

0.05

0.10

0.15

0.20

0.25

0.30

0.35

−40−2002040

Cloud radius = 15 rg

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

−40−2002040

Cloud radius = 30 rg

0.0

0.2

0.4

0.6

0.8

BH

sp

in =

0.0

00

−40−2002040

0.00

0.01

0.02

0.03

0.04

0.05

0.06

−40−2002040

0.0

0.1

0.2

0.3

0.4

0.5

−40−2002040

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

−40−2002040

0.0

0.2

0.4

0.6

0.8

BH

sp

in =

0.5

00

−40−2002040

0.00

0.02

0.04

0.06

0.08

0.10

0.12

−40−2002040

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

−40−2002040

0.0

0.2

0.4

0.6

0.8

−40−2002040

0.0

0.2

0.4

0.6

0.8

1.0

BH

sp

in =

0.9

98

Mario Sanfrutos X–ray wind variability in ESO 323-G77 June 8, 2015 7 / 12

The covering fraction profiles (I)

Cloud position /GM/c^2

Cove

rin

g f

ract

ion

−40−2002040

Cloud radius = 1 rg

0.0

0.2

0.4

0.6

0.8

1.0

20 deg

cloud nH = 1e24

40 deg neutral

60 deg

q = 3

−40−2002040

Cloud radius = 6 rg

−40−2002040

Cloud radius = 15 rg

−40−2002040

Cloud radius = 30 rg

BH

sp

in =

0.0

00

−40−2002040

0.0

0.2

0.4

0.6

0.8

1.0

−40−2002040 −40−2002040 −40−2002040

BH

sp

in =

0.5

00

−40−2002040

0.0

0.2

0.4

0.6

0.8

1.0

−40−2002040 −40−2002040 −40−2002040

0.0

0.2

0.4

0.6

0.8

1.0

BH

sp

in =

0.9

98

Mario Sanfrutos X–ray wind variability in ESO 323-G77 June 8, 2015 8 / 12

The covering fraction profiles (II)

Cloud position /GM/c^2

Cove

rin

g f

ract

ion

−40−2002040

Ionisation = 1e+00 erg cm/s

0.0

0.2

0.4

0.6

0.8

1.0

q = 2

cloud r = 6 rg

q = 3BH spin = 0.998

q = 6

i = 40 deg

−40−2002040

Ionisation = 1e+02 erg cm/s

−40−2002040

Ionisation = 1e+04 erg cm/s

Colu

mn

den

sity

= 1

e+

23

cm

^-2

−40−2002040

0.0

0.2

0.4

0.6

0.8

1.0

−40−2002040 −40−2002040

Colu

mn

den

sity

= 1

e+

24

cm

^-2

−40−2002040

0.0

0.2

0.4

0.6

0.8

1.0

−40−2002040 −40−2002040

Colu

mn

den

sity

= 5

e+

24

cm

^-2

Mario Sanfrutos X–ray wind variability in ESO 323-G77 June 8, 2015 9 / 12

The covering fraction profiles (III)

−40−2002040

Cloud position /GM/c2

0.0

0.1

0.2

0.3

0.4

0.5

0.6C

ove

rin

g f

ract

ion

cloud radius = 6 rgcloud radius = 3 rg

inclination = 40 degBH spin = 0.5 ⇒ ISCO = 4 rgq = 6column density = 1024 cm−2

cloud ionisation = 102 erg cm/s

Mario Sanfrutos X–ray wind variability in ESO 323-G77 June 8, 2015 10 / 12

Detectability on spectral features

−40−2002040

Cloud position /GM/c2

0.0

0.1

0.2

0.3

0.4

0.5

0.6

Cove

rin

g f

ract

ion

inclination = 40 degBH spin = 0.5q = 6column density = 1024 cm−2

cloud ionisation = 102 erg cm/s

cloud radius = 6 rg

2 4 6 8 10 12

Energy /keV

Energ

y2×Flux (arb

itrary units)

−40−2002040

Cloud position /GM/c2

0.0

0.1

0.2

0.3

0.4

0.5

0.6

Cove

rin

g f

ract

ion

inclination = 40 degBH spin = 0.5q = 6column density = 1024 cm−2

cloud ionisation = 102 erg cm/s

cloud radius = 3 rg

2 4 6 8 10 12

Energy /keV

Energ

y2×Flux (arb

itrary units)

Mario Sanfrutos X–ray wind variability in ESO 323-G77 June 8, 2015 11 / 12

Conclusions

Preliminar results are promising

Tentative detections with current instruments

(NGC1365, SWIFT J2127.4+5654 )

Ongoing and future work

Fit real covering fraction profiles

Fit real spectra

Simulate future instruments’ spectra

(ASTRO–H, ATHENA+)

Check degeneracies

...

... SO MUCH WORK TO DO!

Mario Sanfrutos X–ray wind variability in ESO 323-G77 June 8, 2015 12 / 12