The Odd-Parity CMB Bispectrum

Details The Odd-Parity CMB Bispectrum The Odd-Parity CMB Bispectrum

2010-10-20

arxiv.org/abs/1010.4304v1

Phys.Rev.D83:027301,2011

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

5 pages, 1 figure

Scientific paper

10.1103/PhysRevD.83.027301

Measurement of the cosmic microwave background (CMB) bispectrum, or three-point correlation function, has now become one of the principle efforts in early-Universe cosmology. Here we show that there is a odd-parity component of the CMB bispectrum that has been hitherto unexplored. We argue that odd-parity temperature-polarization bispectra can arise, in principle, through weak lensing of the CMB by chiral gravitational waves or through cosmological birefringence, although the signals will be small even in the best-case scenarios. Measurement of these bispectra requires only modest modifications to the usual data-analysis algorithms. They may be useful as a consistency test in searches for the usual bispectrum and to search for surprises in the data.

Affiliated with

Also associated with

No associations

Rating

The Odd-Parity CMB Bispectrum does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The Odd-Parity CMB Bispectrum, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Odd-Parity CMB Bispectrum will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-422221