Correlation of GRB and CMB peaks (view from the CMB frame)

Oleg Verkhodanov, Vladimir Sokolov, Margarita Khabibullina

Special astrophysical observatory

Nizhnij Arkhyz, Russia

GRBs: BeppoSAX (red) + BATSE (white)

BeppoSAX BATSE

t<2s

t >2s

t<2s

t >2s

WMAP5 ILC CMB map

Multipole expansion

L = 2 (quadrupole) L =3 (octupole)

L = 4 L = 5

ILC map: different resolution

Lmax=20, w=260'x260' Lmax=150, w=36'x36'

ILC map: Lmax=150

t < 2s

t > 2s

t < 2s

t > 2s

BeppoSAX BATSE

ILC map: Lmax=20

t < 2s

t > 2s

t < 2s

t > 2s

BeppoSAX BATSE

What could we await from correlation ?

What could we await from correlation ?

1) GRBs as cosmological star formation regions

a) Sunyaev-Zeldovich effect (< ~4')

b) Sachs-Wolfe effect (>200')

2) Something else

3) Nothing

What could we await from correlation ?

1) GRBs as cosmological star formation regions

a) Sunyaev-Zeldovich effect (< ~4')

b) Sachs-Wolfe effect (>200')

2) Something else

3) Nothing

Let us look at statistics

First way:

measuring pixel values of CMB in the GRB pixels

First way:

measuring pixel values of CMB in the GRB pixels

T Mission Lmax Nt Ne Model

t<2s BATSE 150 497 244 249+/-11

t>2s BATSE 150 1540 763 769+/-19

t<2s BATSE 20 497 250 248+/-13

t>2s BATSE 20 1540 781 768+/-32

t<2s BeppoSAX 150 87 43 44+/- 5

t>2s BeppoSAX 150 694 339 347+/-15

t<2s BeppoSAX 20 87 50 44+/- 5 ?

t>2s BeppoSAX 20 694 346 348+/-18

Look at pictures...

ILC map statistics: Lmax=20

t < 2s

t > 2s

t < 2s

t > 2s

BeppoSAX BATSE

ILC map statistics: Lmax=150

t < 2s

t > 2s

t < 2s

t > 2s

BeppoSAX BATSE

Where are these pixels from ?

Put pixels on a sphere...

Put pixels on a sphere...

Put pixels on a sphere...

Put pixels on a sphere and

add ecliptic coordinate system...

Put pixels on a sphere and

and intergrate them in 700'x700' pix

Pixel integration

Smoothed

Map of CMB pixels in GRB positions

Quadrupole

Ecliptic C.S.

Quadrupole of CMB pixels in GRB positions

Ecliptic C.S.

Equatorial C.S.

Quadrupole of CMB pixels in GRB positions

OR

(both ?)

So, what do we see ?

Small extra-pixel statistics knows about ecliptic

or/and equatorial coordinate system...

Second way:

correlation of CMB and GRB maps

GRBs maps, pixel w=200'x200'

t < 2s

t > 2s

t < 2s

t > 2s

BeppoSAX BATSE

BATSE correlation 500' with

t < 2s

t > 2s

t < 2s

t > 2s

BeppoSAX CMB

BATSE correlation with

t < 2s

t > 2s

t < 2s

t > 2s

BeppoSAX CMB

smoothed

BATSE correlation with

Spectrum, max at L=3

t > 2s

Spectrum, max at L=2

t > 2s

BeppoSAX CMB

BATSE correlation with

L=3

t > 2s

L=2

t > 2s

BeppoSAX CMB

BATSE correlation with

L=3

t > 2s

L=2

t > 2s

BeppoSAX CMB

Equatorial coord. system

What do we see ?

There are some non-gaussian features in the GRB-CMB

correlations in:

1) Ecliptic coordinate system – solar wind in Ecl.Poles ?

2) Equatorial Coor. S. - cosmic rays around Earth?

3) Small strange statistics ?

Not only GRBs know coordinate systems,

but CMB knows equatorial system too !... ?

Interesting information can be obtained from GRBs redshifts.