Zobrazeno 1 - 10
of 46
pro vyhledávání: '"Wilkinson,Althea"'
The requirements on the stability of the frequency reference in the Square Kilometre Array (SKA), as a radio astronomy interferometer, are given in terms of maximum accepted degree of coherence loss caused by the instability of the frequency referenc
Externí odkaz:
http://arxiv.org/abs/1801.05419
Autor:
Gregorio, Anna, Cuttaia, Francesco, Mennella, Aniello, Bersanelli, Marco, Maris, Michele, Meinhold, Peter, Sandri, Maura, Terenzi, Luca, Tomasi, Maurizio, Villa, Fabrizio, Frailis, Marco, Morgante, Gianluca, Pearson, Dave, Zacchei, Andrea, Battaglia, Paola, Butler, Reginald Christophe, Davis, Richard, Franceschet, Cristian, Franceschi, Enrico, Galeotta, Samuele, Leonardi, Rodrigo, Lowe, Steve, Mandolesi, Nazzareno, Melot, Frederick, Mendes, Luis, Stassi, Patrick, Stringhetti, Luca, Tavagnacco, Daniele, Zonca, Andrea, Wilkinson, Althea, Wilson, Philip, Charra, Maryse, Maciaszek, Thierry, Foley, Steve, Watson, Christopher J., Casale, Mauro, Laureijs, René, Tauber, Jan, Texier, Damien, Baker, Michelle, Cuevas, Leticia Perez, Krassenburg, Mike, Rihet, Patrick
Publikováno v:
A Gregorio et al 2013 JINST 8 T07001
In this paper we discuss the Planck-LFI in-flight calibration campaign. After a brief overview of the ground test campaigns, we describe in detail the calibration and performance verification (CPV) phase, carried out in space during and just after th
Externí odkaz:
http://arxiv.org/abs/1307.2029
Autor:
Cuttaia, Francesco, Mennella, Aniello, Stringhetti, Luca, Maris, Michele, Terenzi, Luca, Tomasi, Maurizio, Villa, Fabrizio, Bersanelli, Marco, Butler, Christopher Reginald, Cappellini, Benedetta, Cuevas, Leticia Perez, D'Arcangelo, Ocleto, Davis, Richard, Frailis, Marco, Franceschet, Cristian, Franceschi, Enrico, Gregorio, Anna, Hoyland, Roger, Leonardi, Rodrigo, Lowe, Stuart, Mandolesi, Nazzareno, Meinhold, Peter, Mendes, Luis, Roddis, Neil, Sandri, Maura, Valenziano, Luca, Wilkinson, Althea, Zacchei, Andrea, Zonca, Andrea, Battaglia, Paola, De Nardo, Stefania, Grassi, Stefano, Lapolla, Marco, Leutenegger, Paolo, Miccolis, Maurizio, Silvestri, Roberto
Publikováno v:
Journal of Instrumentation, Volume 4, Issue 12, pp. T12013 (2009)
"This paper is part of the Prelaunch status LFI papers published on JINST: http://www.iop.org/EJ/journal/-page=extra.proc5/jinst" This paper describes the Planck Low Frequency Instrument tuning activities performed through the ground test campaigns,
Externí odkaz:
http://arxiv.org/abs/1001.4648
Autor:
Dickinson, Clive, Battye, Richard A., Cleary, Kieran, Davies, Rod D., Davis, Richard J., Genova-Santos, Ricardo, Grainge, Keith, Gutierrez, Carlos M., Hafez, Yaser A., Hobson, Michael P., Jones, Michael E., Kneissl, Rudiger, Lancaster, Katy, Lasenby, Anthony, Leahy, J. P., Maisinger, Klaus, Odman, Carolina, Pooley, Guy, Rajguru, Nutan, Rebolo, Rafael, Rubino-Martin, Jose Alberto, Saunders, Richard D. E., Savage, Richard S., Scaife, Anna, Scott, Paul F., Slosar, Anze, Molina, Pedro Sosa, Taylor, Angela C., Titterington, David, Waldram, Elizabeth, Watson, Robert A., Wilkinson, Althea
Publikováno v:
Mon.Not.Roy.Astron.Soc.353:732,2004
We present deep Ka-band ($\nu \approx 33$ GHz) observations of the CMB made with the extended Very Small Array (VSA). This configuration produces a naturally weighted synthesized FWHM beamwidth of $\sim 11$ arcmin which covers an $\ell$-range of 300
Externí odkaz:
http://arxiv.org/abs/astro-ph/0402498
Autor:
Rebolo, Rafael, Battye, Richard A., Carreira, Pedro, Cleary, Kieran, Davies, Rod D., Davis, Richard J., Dickinson, Clive, Genova-Santos, Ricardo, Grainge, Keith, Gutirrez, Carlos M., Hafez, Yaser A., Hobson, Michael P., Jones, Michael E., Kneissl, Rudiger, Lancaster, Katy, Lasenby, Anthony, Leahy, J. P., Maisinger, Klaus, Pooley, Guy G., Rajguru, Nutan, Rubino-Martin, Jose Alberto, Saunders, Richard D. E., Savage, Richard S., Scaife, Anna, Scott, Paul F., Slosar, Anze, Molina, Pedro Sosa, Taylor, Angela C., Titterington, David, Waldram, Elizabeth, Watson, Robert A., Wilkinson, Althea
Publikováno v:
Mon.Not.Roy.Astron.Soc.353:747-759,2004
We estimate cosmological parameters using data obtained by the Very Small Array (VSA) in its extended configuration, in conjunction with a variety of other CMB data and external priors. Within the flat $\Lambda$CDM model, we find that the inclusion o
Externí odkaz:
http://arxiv.org/abs/astro-ph/0402466
Autor:
Mennella, Aniello, Bersanelli, Marco, Seiffert, Michael, Kettle, Danielle, Roddis, Neil, Wilkinson, Althea, Meinhold, Peter
Publikováno v:
Astron.Astrophys.410:1089-1100,2003
Radiometeric CMB measurements need to be highly stable and this stability is best obtained with differential receivers. The residual 1/f noise in the differential output is strongly dependent on the radiometer input offset which can be cancelled usin
Externí odkaz:
http://arxiv.org/abs/astro-ph/0307558
Autor:
Slosar, Anze, Carreira, Pedro, Cleary, Kieran, Davies, Rod D., Davis, Richard J., Dickinson, Clive, Genova-Santos, Ricardo, Grainge, Keith, Gutierrez, Carlos M., Hafez, Yaser A., Hobson, Michael P., Jones, Michael E., Kneissl, Rudiger, Lancaster, Katy, Lasenby, Anthony, Leahy, J. P., Maisinger, Klaus, Marshall, Phil J., Pooley, Guy G., Rebolo, Rafael, Rubino-Martin, Jose Alberto, Rusholme, Ben, Saunders, Richard D. E., Savage, Richard, Scott, Paul F., Molina, Pedro J. Sosa, Taylor, Angela C., Titterington, David, Waldram, Elizabeth, Watson, Robert A., Wilkinson, Althea
Publikováno v:
Mon.Not.Roy.Astron.Soc. 341 (2003) L29
We constrain the basic comological parameters using the first observations by the Very Small Array (VSA) in its extended configuration, together with existing cosmic microwave background data and other cosmological observations. We estimate cosmologi
Externí odkaz:
http://arxiv.org/abs/astro-ph/0212497
Autor:
Grainge, Keith, Carreira, Pedro, Cleary, Kieran, Davies, Rod D., Davis, Richard J., Dickinson, Clive, Genova-Santos, Ricardo, Gutierrez, Carlos M., Hafez, Yaser A., Hobson, Michael P., Jones, Michael E., Kneissl, Rudiger, Lancaster, Katy, Lasenby, Anthony, Leahy, J. P., Maisinger, Klaus, Pooley, Guy G., Rebolo, Rafael, Rubino-Martin, Jose Alberto, Molina, Pedro Sosa, Odman, Carolina, Rusholme, Ben, Saunders, Richard D. E., Savage, Richard, Scott, Paul F., Slosar, Anze, Taylor, Angela C., Titterington, David, Waldram, Elizabeth, Watson, Robert A., Wilkinson, Althea
Publikováno v:
Mon.Not.Roy.Astron.Soc. 341 (2003) L23
We have observed the cosmic microwave background (CMB) in three regions of sky using the Very Small Array (VSA) in an extended configuration with antennas of beamwidth 2 degrees at 34 GHz. Combined with data from previous VSA observations using a mor
Externí odkaz:
http://arxiv.org/abs/astro-ph/0212495
Autor:
Scott, Paul F., Carreira, Pedro, Cleary, Kieran, Davies, Rod D., Davis, Richard, Dickinson, Clive, Grainge, Keith, Gutierrez, Carlos, Hobson, Michael P., Jones, Michael E., Kneissl, Ruediger, Lasenby, Anthony, Maisinger, Klaus, Pooley, Guy, Rebolo, Rafael, Martin, Jose Alberto Rubino, Molina, Pedro Sosa, Rusholme, Ben, Saunders, Richard, Savage, Richard, Slosar, Anze, Taylor, Angela C., Titterington, David, Waldram, Elizabeth, Watson, Robert A., Wilkinson, Althea
Publikováno v:
Mon.Not.Roy.Astron.Soc.341:1076,2003
We present the power spectrum of the fluctuations in the cosmic microwave background detected by the Very Small Array (VSA) in its first season of observations in its compact configuration. We find clear detections of first and second acoustic peaks
Externí odkaz:
http://arxiv.org/abs/astro-ph/0205380
Autor:
Watson, Robert A., Carreira, Pedro, Cleary, Kieran, Davies, Rod D., Davis, Richard J., Dickinson, Clive, Grainge, Keith, Gutierrez, Carlos M., Hobson, Michael P., Jones, Michael E., Kneissl, Rudiger, Lasenby, Anthony, Maisinger, Klaus, Pooley, Guy G., Rebolo, Rafael, Rubino-Martin, Jose Alberto, Rusholme, Ben, Saunders, Richard D. E., Savage, Richard, Scott, Paul F., Slosar, Anze, Molina, Pedro J. Sosa, Taylor, Angela C., Titterington, David, Waldram, Elizabeth, Wilkinson, Althea
Publikováno v:
Mon.Not.Roy.Astron.Soc. 341 (2003) 1057
The Very Small Array (VSA) is a synthesis telescope designed to image faint structures in the cosmic microwave background on degree and sub-degree angular scales. The VSA has key differences from other CMB interferometers with the result that differe
Externí odkaz:
http://arxiv.org/abs/astro-ph/0205378