Probing neutrino masses with CMB lensing extraction

Details Probing neutrino masses with CMB lensing extraction Probing neutrino masses with CMB lensing extraction

2005-11-28

arxiv.org/abs/astro-ph/0511735v2

Phys.Rev.D73:045021,2006

Astronomy and Astrophysics

Astrophysics

13 pages, 4 figures. One new figure and references added. Version accepted for publication

Scientific paper

10.1103/PhysRevD.73.045021

We evaluate the ability of future cosmic microwave background (CMB) experiments to measure the power spectrum of large scale structure using quadratic estimators of the weak lensing deflection field. We calculate the sensitivity of upcoming CMB experiments such as BICEP, QUaD, BRAIN, ClOVER and PLANCK to the non-zero total neutrino mass M_nu indicated by current neutrino oscillation data. We find that these experiments greatly benefit from lensing extraction techniques, improving their one-sigma sensitivity to M_nu by a factor of order four. The combination of data from PLANCK and the SAMPAN mini-satellite project would lead to sigma(M_nu) = 0.1 eV, while a value as small as sigma(M_nu) = 0.035 eV is within the reach of a space mission based on bolometers with a passively cooled 3-4 m aperture telescope, representative of the most ambitious projects currently under investigation. We show that our results are robust not only considering possible difficulties in subtracting astrophysical foregrounds from the primary CMB signal but also when the minimal cosmological model (Lambda Mixed Dark Matter) is generalized in order to include a possible scalar tilt running, a constant equation of state parameter for the dark energy and/or extra relativistic degrees of freedom.

Affiliated with

Also associated with

No associations

Rating

Probing neutrino masses with CMB lensing extraction 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 Probing neutrino masses with CMB lensing extraction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Probing neutrino masses with CMB lensing extraction will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-25066