Polarization and microlensing in the quadruply imaged broad absorption line quasars H1413+117

P

OLARIZATION AND MICROLENSING IN THE

QUADRUPLY IMAGED BROAD ABSORPTION LINE

QUASAR

H1413+117

D. Hutsemékers

1

, D. Sluse

1

, L. Braibant

1

, T. Anguita

2

1

_{Faculté des Sciences, département d’Astrophysique, de Géophysique et d’Océanographie, Université de Liège, Belgium}

2

_{Departemento de Ciencias Fisicas, universidad Andres Bello, Santiago, Chile}

The Cloverleaf

A

B

C

D

z

_S

= 2.55

Polarized

∼ 2

%

(Goodri h & Miller

1995)

Mi rolensed

(e.g. Angonin et al.

1990, Hutsemékers et

The Cloverleaf

Slit Date

(A,D) Mar h 5th, 2011

(A,D) Mar h 31st, 2011

Microlensing effect on polarization

0

1

2

F

A

0

4

p

(%)

0

2

4

F

×

p

4000

4500

5000

5500

6000

6500

7000

Wavelength (

Å

)

0

90

θ

(°

)

Microlensing effect on polarization

0

1

2

F

A

D

0

4

p

(%)

0

2

4

F

×

p

0

90

θ

(°

)

Microlensing effect on polarization

0

1

2

F

A

D

0

4

p

(%)

0

2

4

F

×

p

4000

4500

5000

5500

6000

6500

7000

Wavelength (

Å

)

0

90

θ

(°

)

Two scattering regions?

Under the hypothesisthat the observed ontinuum

polar-ization is the sum of the polarization from a mi rolensed

ompa t sour e and a non-mi rolensedextended one, we

an extra t the intrinsi polarization of the two sour es:

s

D

=

µs

c

+

βs

e

µ + β

,

s

A

=

s

c

+

βs

e

1 +

_β

.

s =

normalized stokes parameter, namely

q

or

u

.

c

denotes the ompa t mi rolensed sour e and

e

the

extended one.

β = F

e

/F

c

.

µ

quanties the additional ampli ation due to

mi rolensing. With

µ ∼ 2

, we obtained:

p

c

_∼

3%,

θ

c

∼ 115

◦

and

p

e

∼

10%,

θ

e

∼ 35

◦

Two scattering regions?

Under the hypothesisthat the observed ontinuum

polar-ization is the sum of the polarization from a mi rolensed

ompa t sour e and a non-mi rolensedextended one, we

an extra t the intrinsi polarization of the two sour es:

s

D

=

µs

c

+

βs

e

µ + β

,

s

A

=

s

c

+

βs

e

1 +

_β

.

s =

normalized stokes parameter, namely

q

or

u

.

c

denotes the ompa t mi rolensed sour e and

e

the

extended one.

β = F

e

/F

c

.

µ

quanties the additional ampli ation due to

mi rolensing. With

µ ∼ 2

, we obtained:

p

c

_∼

3%,

θ

c

∼ 115

◦

and

p

e

∼

10%,

θ

e

∼ 35

◦

Two scattering regions?

Under the hypothesisthat the observed ontinuum

polar-ization is the sum of the polarization from a mi rolensed

ompa t sour e and a non-mi rolensedextended one, we

an extra t the intrinsi polarization of the two sour es:

s

D

=

µs

c

+

βs

e

µ + β

,

s

A

=

s

c

+

βs

e

1 +

_β

.

s =

normalized stokes parameter, namely

q

or

u

.

c

denotes the ompa t mi rolensed sour e and

e

the

extended one.

β = F

e

/F

c

.

µ

quanties the additional ampli ation due to

mi rolensing. With

µ ∼ 2

, we obtained:

p

c

_∼

3%,

θ

c

∼ 115

◦

and

p

e

∼

10%,

θ

e

∼ 35

◦

Continuum emitting

(adapted from Smith et al. 2004)

Equatorial scattering

~115°

p ~ 3%

To conclude

The ee t of mi rolensing on the

polarization unveils the presen e

of two ontinuum sour es

polarized roughly perpendi ularly.

Continuum emitting

(adapted from Smith et al. 2004)

Equatorial scattering

~115°

p ~ 3%