|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'500'096
Articles rated: 2609
18 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Correlations in the (Sub)millimeter background from ACTxBLAST | | Amir Hajian
; Marco P. Viero
; Graeme Addison
; Paula Aguirre
; John William Appel
; Nick Battaglia
; James J. Bock
; J. Richard Bond
; Sudeep Das
; Mark J. Devlin
; Simon R. Dicker
; Joanna Dunkley
; Rolando Dunner
; Thomas Essinger-Hileman
; John P. Hughes
; Joseph W. Fowler
; Mark Halpern
; Matthew Hasselfield
; Matt Hilton
; Adam D. Hincks
; Renee Hlozek
; Kent D. Irwin
; Jeff Klein
; Arthur Kosowsky
; Yen-Ting Lin
; Tobias A. Marriage
; Danica Marsden
; Gaelen Marsden
; Felipe Menanteau
; Lorenzo Moncelsi
; Kavilan Moodley
; Calvin B. Netterfield
; Michael D. Niemack
; Michael R. Nolta
; Lyman A. Page
; Lucas Parker
; Douglas Scott
; Neelima Sehgal
; Jon Sievers
; David N. Spergel
; Suzanne T. Staggs
; Daniel S. Swetz
; Eric R. Switzer
; Robert Thornton
; Ed Wollack
; | | Date: |
Fri, 7 Jan 2011 20:32:10 GMT (1844kb) | | Abstract: | We present measurements of the auto- and cross-frequency correlation power
spectra of the cosmic (sub)millimeter background at: 250, 350, and 500 um
(1200, 860, and 600 GHz) from observations made with the Balloon-borne Large
Aperture Submillimeter Telescope, BLAST; and at 1380 and 2030 um (218 and 148
GHz) from observations made with the Atacama Cosmology Telescope, ACT. The
overlapping observations cover 8.6 deg^2 in an area relatively free of Galactic
dust near the south ecliptic pole (SEP). The ACT bands are sensitive to
radiation from the CMB, the Sunyaev-Zel’dovich (SZ) effect from galaxy
clusters, and to emission by radio and dusty star-forming galaxies (DSFGs),
while the dominant contribution to the BLAST bands is from DSFGs. We confirm
and extend the BLAST analysis of clustering with an independent pipeline, and
also detect correlations between the ACT and BLAST maps at over 25sigma
significance, which we interpret as a detection of the DSFGs in the ACT maps.
In addition to a Poisson component in the cross-frequency power spectra, we
detect a clustered signal at >4sigma, and using a model for the DSFG evolution
and number counts, we successfully fit all our spectra with a linear clustering
model and a bias that depends only on redshift and not on scale. Finally, the
data are compared to, and generally agree with, phenomenological models for the
DSFG population. This study represents a first of its kind, and demonstrates
the constraining power of the cross-frequency correlation technique to
constrain models for the DSFGs. Similar analyses with more data will impose
tight constraints on future models. | | Source: | arXiv, 1101.1517 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser claudebot
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER