PROPERTIES OF GALACTIC CIRRUS CLOUDS OBSERVED BY BOOMERANG
The physical properties of galactic cirrus emission are not well characterized. BOOMERANG is a balloon-borne 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,...
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IOP Publishing
2015
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author | Veneziani, M. Ade, P. A. R. Bock, J. J. Boscaleri, A. Crill, B. P. de Bernardis, P. De Gasperis, G. De Troia, G. Stefano, G. Di 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. Netterfield, C. B. Pascale, E. Piacentini, F. Pietrobon, D. Polenta, G. Ricciardi, S. Romeo, G. Ruhl, J. E. de Oliveira-Costa, Angelica |
author2 | Lincoln Laboratory |
author_facet | Lincoln Laboratory Veneziani, M. Ade, P. A. R. Bock, J. J. Boscaleri, A. Crill, B. P. de Bernardis, P. De Gasperis, G. De Troia, G. Stefano, G. Di 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. Netterfield, C. B. Pascale, E. Piacentini, F. Pietrobon, D. Polenta, G. Ricciardi, S. Romeo, G. Ruhl, J. E. de Oliveira-Costa, Angelica |
author_sort | Veneziani, M. |
collection | MIT |
description | The physical properties of galactic cirrus emission are not well characterized. BOOMERANG is a balloon-borne 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 data sets at different wavelengths. We have detected eight emission patches in the 345 GHz map, consistent with cirrus dust in the Infrared Astronomical Satellite maps. The analysis technique we have developed allows us to identify the location and the shape of cirrus clouds, and to extract the flux from observations with different instruments at different wavelengths 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 gray 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. |
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institution | Massachusetts Institute of Technology |
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publishDate | 2015 |
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spelling | mit-1721.1/956702022-09-27T18:43:24Z PROPERTIES OF GALACTIC CIRRUS CLOUDS OBSERVED BY BOOMERANG Veneziani, M. Ade, P. A. R. Bock, J. J. Boscaleri, A. Crill, B. P. de Bernardis, P. De Gasperis, G. De Troia, G. Stefano, G. Di 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. Netterfield, C. B. Pascale, E. Piacentini, F. Pietrobon, D. Polenta, G. Ricciardi, S. Romeo, G. Ruhl, J. E. de Oliveira-Costa, Angelica Lincoln Laboratory Massachusetts Institute of Technology. Department of Physics de Oliveira-Costa, Angelica The physical properties of galactic cirrus emission are not well characterized. BOOMERANG is a balloon-borne 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 data sets at different wavelengths. We have detected eight emission patches in the 345 GHz map, consistent with cirrus dust in the Infrared Astronomical Satellite maps. The analysis technique we have developed allows us to identify the location and the shape of cirrus clouds, and to extract the flux from observations with different instruments at different wavelengths 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 gray 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. Italian Space Agency (Contract COFIS) Italian Space Agency (Contract BOOMERANG) Italian Space Agency (Contract HiGal I/038/08/0) 2015-02-26T18:34:24Z 2015-02-26T18:34:24Z 2010-03 2009-07 Article http://purl.org/eprint/type/JournalArticle 0004-637X 1538-4357 http://hdl.handle.net/1721.1/95670 Veneziani, M., P. A. R. Ade, J. J. Bock, A. Boscaleri, B. P. Crill, P. de Bernardis, G. De Gasperis, et al. “PROPERTIES OF GALACTIC CIRRUS CLOUDS OBSERVED BY BOOMERANG.” The Astrophysical Journal 713, no. 2 (March 29, 2010): 959–969. © 2010 The American Astronomical Society en_US http://dx.doi.org/10.1088/0004-637x/713/2/959 Astrophysical Journal Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf IOP Publishing American Astronomical Society |
spellingShingle | Veneziani, M. Ade, P. A. R. Bock, J. J. Boscaleri, A. Crill, B. P. de Bernardis, P. De Gasperis, G. De Troia, G. Stefano, G. Di 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. Netterfield, C. B. Pascale, E. Piacentini, F. Pietrobon, D. Polenta, G. Ricciardi, S. Romeo, G. Ruhl, J. E. de Oliveira-Costa, Angelica PROPERTIES OF GALACTIC CIRRUS CLOUDS OBSERVED BY BOOMERANG |
title | PROPERTIES OF GALACTIC CIRRUS CLOUDS OBSERVED BY BOOMERANG |
title_full | PROPERTIES OF GALACTIC CIRRUS CLOUDS OBSERVED BY BOOMERANG |
title_fullStr | PROPERTIES OF GALACTIC CIRRUS CLOUDS OBSERVED BY BOOMERANG |
title_full_unstemmed | PROPERTIES OF GALACTIC CIRRUS CLOUDS OBSERVED BY BOOMERANG |
title_short | PROPERTIES OF GALACTIC CIRRUS CLOUDS OBSERVED BY BOOMERANG |
title_sort | properties of galactic cirrus clouds observed by boomerang |
url | http://hdl.handle.net/1721.1/95670 |
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