Earth-prints repository, logo   DSpace

About DSpace Software
|earth-prints home page | roma library | bologna library | catania library | milano library | napoli library | palermo library
Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/6899

Authors: Veneziani, M.*
Ade, P. A. R.*
Bock, J. J*
Boscaleri, A.*
Crill, B. P.*
de Bernardis, P.*
De Gasperis, G.*
De Oliveira - Costa, A.*
De Troia, G.*
Di Stefano, G.*
Ganga, K. M.*
Jones, W. C.*
Kisner, T. S.*
Lange, A. E.*
MacTavish, C. J.*
Masi, S.*
Mauskopf, P. D.*
Montroy, T. E.*
Natoli, P.*
Pascale, E.*
Piacentini, F.*
Pietrobon, D.*
Polenta, G.*
Ricciardi, S.*
Romeo, G.*
Ruhl, J. E.*
Netterfield, C. B.*
Title: Properties of Galactic cirrus clouds observed by BOOMERanG
Title of journal: Astrophysical Journal
Series/Report no.: /713 (2010)
Issue Date: 2010
DOI: 10.1088/0004-637X/713/2/959
URL: arXiv:0907.5012v2
Keywords: cosmology: observations
cosmology: foregrounds
galactic dust
BOOMERanG
Abstract: The physical properties of galactic cirrus emission are not well characterized. BOOMERANG is a balloonborne experiment designed to study the cosmic microwave background at high angular resolution in the millimeter range. The BOOMERANG 245 and 345 GHz channels are sensitive to interstellar signals, in a spectral range intermediate between FIR and microwave frequencies. We look for physical characteristics of cirrus structures in a region at high galactic latitudes (b -40 ) where BOOMERANG performed its deepest integration, combining the BOOMERANG data with other available datasets at different wavelengths. We have detected 8 emission patches in the 345 GHz map, consistent with cirrus dust in the Infrared Astronomical Satellite maps. The analysis technique we have developed allows to identify the location and the shape of cirrus clouds, and to extract the flux from observationswith different instruments at differentwavelengths and angular resolutions. We study the integrated flux emitted from these cirrus clouds using data from Infrared Astronomical Satellite (IRAS), DIRBE, BOOMERANG and Wilkinson Microwave Anisotropy Probe in the frequency range 23–3000 GHz (13 mm 100 μm wavelength). We fit the measured spectral energy distributions with a combination of a grey body and a power-law spectra considering two models for the thermal emission. The temperature of the thermal dust component varies in the 7 – 20 K range and its emissivity spectral index is in the 1 – 5 range. We identified a physical relation between temperature and spectral index as had been proposed in previous works. This technique can be proficiently used for the forthcoming Planck and Herschel missions data.
Appears in Collections:05.07.99. General or miscellaneous
Papers Published / Papers in press

Files in This Item:

File Description SizeFormatVisibility
PROPERTIES OF GALACTIC CIRRUS CLOUDS OBSERVED BY BOOMERANG.pdf Main article1.45 MBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.


Share this record
Del.icio.us

Citeulike

Connotea

Facebook

Stumble it!

reddit


 

Valid XHTML 1.0! ICT Support, development & maintenance are provided by CINECA. Powered on DSpace Software. CINECA