Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Angelica de Oliveira-Costa"'
Autor:
Patricia Reich, T. L. Landecker, Bryan Gaensler, Angelica de Oliveira-Costa, Justin L. Jonas, Max Tegmark
Publikováno v:
Monthly Notices of the Royal Astronomical Society. 388:247-260
Understanding diffuse Galactic radio emission is interesting both in its own right and for minimizing foreground contamination of cosmological measurements. Cosmic Microwave Background experiments have focused on frequencies > 10 GHz, whereas 21 cm t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::afc94d575f430a2190347fbe441f37be
https://doi.org/10.1111/j.1365-2966.2008.13376.x
https://doi.org/10.1111/j.1365-2966.2008.13376.x
Autor:
Angelica de Oliveira-Costa, Carlos M. Gutiérrez, R. D. Davies, Max Tegmark, Anthony Lasenby, Robert A. Watson, Rafael Rebolo
Publikováno v:
The Astrophysical Journal. 606:L89-L92
The WMAP team has produced a foreground map that can account for most of the low-frequency Galactic microwave emission in the WMAP maps, tentatively interpreting it as synchrotron emission. Finkbeiner and collaborators have challenged these conclusio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::96dcb35511dc133596e153274ee911aa
https://doi.org/10.1086/421293
https://doi.org/10.1086/421293
Autor:
Brian Keating, Peter Timbie, George Efstathiou, Angelica de Oliveira-Costa, George F. Smoot, Max Tegmark, Christopher W. O'Dell
Publikováno v:
New Astronomy Reviews. 47:1117-1121
Most of the useful information about inflationary gravitational waves and reionization is on large angular scales where Galactic foreground contamination is the worst, so a key challenge is to model, quantify and remove polarized foregrounds. We use
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e9722b746fada036f7a51ed11edb051
https://doi.org/10.1016/j.newar.2003.09.012
https://doi.org/10.1016/j.newar.2003.09.012
Autor:
Thyrso Villela, J. Staren, Peter Meinhold, Max Tegmark, M. Lim, C. Alexandre Wuensche, J. Childers, Michael Seiffert, N. Figueiredo, Philip Lubin, Angelica de Oliveira-Costa, Todd Gaier
Publikováno v:
The Astrophysical Journal. 541:535-541
We present cosmic microwave background (CMB) maps from the Santa Barbara HACME balloon experiment (Staren et al.), covering about 1150 square degrees split between two regions in the northern sky, near the stars c Ursae Minoris and a Leonis, respecti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a893bdaf41daee63d2126ddfcbc0cc05
https://doi.org/10.1086/309442
https://doi.org/10.1086/309442
Publikováno v:
The Astrophysical Journal. 530:133-165
One of the main challenges facing upcoming CMB experiments will be to distinguish the cosmological signal from foreground contamination. We present a comprehensive treatment of this problem and study how foregrounds degrade the accuracy with which th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::66c5d0941fade20bebd6d23012073afa
https://doi.org/10.1086/308348
https://doi.org/10.1086/308348
Autor:
Aled Jones, Anthony Lasenby, Angelica de Oliveira-Costa, Robert A. Watson, Max Tegmark, Carlos M. Gutiérrez, R. D. Davies, Rafael Rebolo
Publikováno v:
Scopus-Elsevier
The recent discovery of dust-correlated diffuse microwave emission has prompted two rival explanations: free-free emission and spinning dust grains. We present new detections of this component at 10 and 15 GHz by the switched-beam Tenerife experiment
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4229f49f1b52920fe6af2df4994cfade
https://doi.org/10.1086/312384
https://doi.org/10.1086/312384
Autor:
Lyman A. Page, Amber Miller, Mark J. Devlin, Max Tegmark, Angelica de Oliveira-Costa, T. Herbig
Publikováno v:
The Astrophysical Journal. 509:L73-L76
We report the results from the second flight of QMAP, an experiment to map the cosmic microwave background near the North Celestial Pole. We present maps of the sky at 31 and 42 GHz as well as a measurement of the angular power spectrum covering the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5ce80abc19050c0e76c20e93fc89b8c0
https://doi.org/10.1086/311768
https://doi.org/10.1086/311768
Autor:
Max Tegmark, Angelica de Oliveira-Costa, Amber Miller, Mark J. Devlin, Barth Netterfield, T. Herbig, Lyman A. Page
Publikováno v:
The Astrophysical Journal. 509:L77-L80
We present results from the QMAP balloon experiment, which maps the Cosmic Microwave Background (CMB) and probes its angular power spectrum on degree scales. In two separate flights, data were taken in six channels at two frequency bands between 26 t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8099095394874963029974f801496267
https://doi.org/10.1086/311767
https://doi.org/10.1086/311767
Publikováno v:
The Astrophysical Journal. 509:L9-L12
We cross-correlate a 19 GHz full sky Cosmic Microwave Background (CMB) survey with other maps to quantify the foreground contribution. Correlations are detected with the Diffuse Infrared Background Experiment (DIRBE) 240, 140 and 100 micron maps at h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73ab9df5326aa144f3e7b51d0257a7f4
https://doi.org/10.1086/311754
https://doi.org/10.1086/311754
Publikováno v:
The Astrophysical Journal. 500:L83-L86
For high-precision cosmic microwave background (CMB) experiments, contamination from extragalactic point sources is a major concern. It is therefore useful to be able to detect and discard point source contaminated pixels using the map itself. We sho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc23d973881c731bbc642088851d8d2f
https://doi.org/10.1086/311410
https://doi.org/10.1086/311410