CMB dipole direction

TrickyDicky

Does anyone know how is the direction of motion from the CMB dipole determined?
Do earth's motion around the sun affect the direction and magnitude of the velocity as seen on observations made over many months?

marcus

Quote by TrickyDicky

Does anyone know how is the direction of motion from the CMB dipole determined?
Do earth's motion around the sun affect the direction and magnitude of the velocity as seen on observations made over many months?

The earth's motion about the sun is only about 30 km/second, so it makes a small effect.

The direction and speed of the solar system motion is given in some paper from the COBE mission, around 2002 or so. Charles Bennett was one of the authors. It gave precise coordinates.
What I remember is that the sun is moving in the general direction of the constellation LEO at
a speed of approximately 370-380 km/second.

Do you need to know exact coordinates of the direction, or a more accurate idea of the speed?

TrickyDicky

Quote by marcus

The earth's motion about the sun is only about 30 km/second, so it makes a small effect.

The direction and speed of the solar system motion is given in some paper from the COBE mission, around 2002 or so. Charles Bennett was one of the authors. It gave precise coordinates.
What I remember is that the sun is moving in the general direction of the constellation LEO at
a speed of approximately 370-380 km/second.

Do you need to know exact coordinates of the direction, or a more accurate idea of the speed?

Thanks Marcus, I have found one post where you give the galactic coordinates direction of CMB dipole direction around 264.4º, 48.4º and a link you give in that post:http://aether.lbl.gov/www/projects/u2/ solves most of my doubts.
I'll try to find the paper from COBE mission.

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TrickyDicky	CMB dipole direction Does anyone know how is the direction of motion from the CMB dipole determined? Do earth's motion around the sun affect the direction and magnitude of the velocity as seen on observations made over many months?