Zobrazeno 1 - 10
of 80
pro vyhledávání: '"Pospieszalski, M."'
In their article, Wang et al. [1] report a new scheme for THz heterodyne detection using a laser-driven LTG-GaAs photomixer [2, 3] and make the impressive claim of achieving near quantum-limited sensitivity at room temperature. Unfortunately, their e
Externí odkaz:
http://arxiv.org/abs/1907.13198
Autor:
Frayer, D. T., Maddalena, Ronald J., Meijer, M., Hough, L., White, S., Norrod, R., Watts, G., Stennes, M., Simon, R., Woody, D., Srikanth, S., Pospieszalski, M., Bryerton, E., Whitehead, M., Ford, P., Mello, M., Bloss, M.
We present a 67--93.6 GHz spectral line survey of Orion-KL with the new 4 mm Receiver on the Green Bank Telescope (GBT). The survey reaches unprecedented depths and covers the low-frequency end of the 3 mm atmospheric window which has been relatively
Externí odkaz:
http://arxiv.org/abs/1502.01280
Autor:
Mennella, A., Bersanelli, M., Butler, R. C., Curto, A., Cuttaia, F., Davis, R. J., Dick, J., Frailis, M., Galeotta, S., Gregorio, A., Kurki-Suonio, H., Lawrence, C. R., Leach, S., Leahy, J. P., Lowe, S., Maino, D., Mandolesi, N., Maris, M., Martínez-González, E., Meinhold, P. R., Morgante, G., Pearson, D., Perrotta, F., Polenta, G., Poutanen, T., Sandri, M., Seiffert, M. D., Suur-Uski, A. -S., Tavagnacco, D., Terenzi, L., Tomasi, M., Valiviita, J., Villa, F., Watson, R., Wilkinson, A., Zacchei, A., Zonca, A., Aja, B., Artal, E., Baccigalupi, C., Banday, A. J., Barreiro, R. B., Bartlett, J. G., Bartolo, N., Battaglia, P., Bennett, K., Bonaldi, A., Bonavera, L., Borrill, J., Bouchet, F. R., Burigana, C., Cabella, P., Cappellini, B., Chen, X., Colombo, L., Cruz, M., Danese, L., D'Arcangelo, O., Davies, R. D., de Gasperis, G., de Rosa, A., de Zotti, G., Dickinson, C., Diego, J. M., Donzelli, S., Efstathiou, G., Enßlin, T. A., Eriksen, H. K., Falvella, M. C., Finelli, F., Foley, S., Franceschet, C., Franceschi, E., Gaier, T. C., Génova-Santos, R. T., George, D., Gómez, F., González-Nuevo, J., Górski, K. M., Gruppuso, A., Hansen, F. K., Herranz, D., Herreros, J. M., Hoyland, R. J., Hughes, N., Jewell, J., Jukkala, P., Juvela, M., Kangaslahti, P., Keihänen, E., Keskitalo, R., Kilpia, V. -H., Kisner, T. S., Knoche, J., Knox, L., Laaninen, M., Lähteenmäki, A., Lamarre, J. -M., Leonardi, R., León-Tavares, J., Leutenegger, P., Lilje, P. B., López-Caniego, M., Lubin, P. M., Malaspina, M., Marinucci, D., Massardi, M., Matarrese, S., Matthai, F., Melchiorri, A., Mendes, L., Miccolis, M., Migliaccio, M., Mitra, S., Moss, A., Natoli, P., Nesti, R., Nørgaard-Nielsen, H. U., Pagano, L., Paladini, R., Paoletti, D., Partridge, B., Pasian, F., Pettorino, V., Pietrobon, D., Pospieszalski, M., Prézeau, G., Prina, M., Procopio, P., Puget, J. -L., Quercellini, C., Rachen, J. P., Rebolo, R., Reinecke, M., Ricciardi, S., Robbers, G., Rocha, G., Roddis, N., Rubiño-Martín, J. A., Savelainen, M., Scott, D., Silvestri, R., Simonetto, A., Sjoman, P., Smoot, G. F., Sozzi, C., Stringhetti, L., Tauber, J. A., Tofani, G., Toffolatti, L., Tuovinen, J., Türler, M., Umana, G., Valenziano, L., Varis, J., Vielva, P., Vittorio, N., Wade, L. A., Watson, C., White, S. D. M., Winder, F.
Publikováno v:
A&A Vol 536, A3 (Dec 2011)
The scientific performance of the Planck Low Frequency Instrument (LFI) after one year of in-orbit operation is presented. We describe the main optical parameters and discuss photometric calibration, white noise sensitivity, and noise properties. A p
Externí odkaz:
http://arxiv.org/abs/1101.2038
Autor:
Consortium, AMI, Shimwell, T. W., Barker, R. W., Biddulph, P., Bly, D., Boysen, R. C., Brown, A. R., Brown, M. L., Clementson, C., Crofts, M., Culverhouse, T. L., Czeres, J., Dace, R. J., Davies, M. L., D'Alessandro, R., Doherty, P., Duggan, K., Ely, J. A., Felvus, M., Feroz, F., Flynn, W., Franzen, T. M. O., Geisbusch, J., Genova-Santos, R., Grainge, K. J. B., Grainger, W. F., Hammett, D., Hobson, M. P., Holler, C. M., Hurley-Walker, N., Jilley, R., Kaneko, T., Kneissl, R., Lancaster, K., Lasenby, A. N., Marshall, P. J., Newton, F., Norris, O., Northrop, I., Odell, D. M., Olamaie, M., Pober, Y. C. Perrott J. C., Pooley, G. G., Pospieszalski, M. W., Quy, V., Rodriguez-Gonzalvez, C., Saunders, R. D. E., Scaife, A. M. M., Schammel, M. P., Schofield, J., Scott, P. F., Shaw, C., Smith, H., Titterington, D. J., Velic, M., Waldram, E. M., West, S., Wood, B. A., Yassin, G., Zwart, J. T. L.
We present an interesting Sunyaev-Zel'dovich (SZ) detection in the first of the Arcminute Microkelvin Imager (AMI) 'blind', degree-square fields to have been observed down to our target sensitivity of 100{\mu}Jy/beam. In follow-up deep pointed observ
Externí odkaz:
http://arxiv.org/abs/1012.4441
Autor:
Villa, F., Terenzi, L., Sandri, M., Meinhold, P., Poutanen, T., Battaglia, P., Franceschet, C., Hughes, N., Laaninen, M., Lapolla, P., Bersanelli, M., Butler, R. C., Cuttaia, F., D'Arcangelo, O., Frailis, M., Franceschi, E., Galeotta, S., Gregorio, A., Leonardi, R., Lowe, S. R., Mandolesi, N., Maris, M., Mendes, L., Mennella, A., Morgante, G., Stringhetti, L., Tomasi, M., Valenziano, L., Zacchei, A., Zonca, A., Aja, B., Artal, E., Balasini, M., Bernardino, T., Blackhurst, E., Boschini, L., Cappellini, B., Cavaliere, F., Colin, A., Colombo, F., Davis, R. J., De La Fuente, L., Edgeley, J., Gaier, T., Galtress, A., Hoyland, R., Jukkala, P., Kettle, D., Kilpia, V-H., Lawrence, C. R., Lawson, D., Leahy, J. P., Leutenegger, P., Levin, S., Maino, D., Malaspina, M., Mediavilla, A., Miccolis, M., Pagan, L., Pascual, J. P., Pasian, F., Pecora, M., Pospieszalski, M., Roddis, N., Salmon, M. J., Seiffert, M., Silvestri, R., Simonetto, A., Sjoman, P., Sozzi, C., Tuovinen, J., Varis, J., Wilkinson, A., Winder, F.
The Low Frequency Instrument (LFI) on-board the ESA Planck satellite carries eleven radiometer subsystems, called Radiometer Chain Assemblies (RCAs), each composed of a pair of pseudo-correlation receivers. We describe the on-ground calibration campa
Externí odkaz:
http://arxiv.org/abs/1005.2541
Autor:
Davis, R. J., Wilkinson, A., Davies, R. D., Winder, W. F., Roddis, N., Blackhurst, E. J., Lawson, D., Lowe, S. R., Baines, C., Butlin, M., Galtress, A., Shepherd, D., Aja, B., Artal, E., Bersanelli, M., Butler, R. C., Castelli, C., Cuttaia, F., D'Arcangelo, O., Gaier, T., Hoyland, R., Kettle, D., Leonardi, R., Mandolesi, N., Mennella, A., Meinhold, P., Pospieszalski, M., Stringhetti, L., Tomasi, M., Valenziano, L., Zonca, A.
Publikováno v:
R J Davis et al 2009 JINST 4 T12002
We give a description of the design, construction and testing of the 30 and 44 GHz Front End Modules (FEMs) for the Low Frequency Instrument (LFI) of the Planck mission to be launched in 2009. The scientific requirements of the mission determine the
Externí odkaz:
http://arxiv.org/abs/1001.4743
Autor:
Bersanelli, M., Mandolesi, N., Butler, R. C., Mennella, A., Villa, F., Aja, B., Artal, E., Artina, E., Baccigalupi, C., Balasini, M., Baldan, G., Banday, A., Bastia, P., Battaglia, P., Bernardino, T., Blackhurst, E., Boschini, L., Burigana, C., Cafagna, G., Cappellini, B., Cavaliere, F., Colombo, F., Crone, G., Cuttaia, F., D'Arcangelo, O., Danese, L., Davies, R. D., Davis, R. J., De Angelis, L., De Gasperis, G. C., De La Fuente, L., De Rosa, A., De Zotti, G., Falvella, M. C., Ferrari, F., Ferretti, R., Figini, L., Fogliani, S., Franceschet, C., Franceschi, E., Gaier, T., Garavaglia, S., Gomez, F., Gorski, K., Gregorio, A., Guzzi, P., Herreros, J. M., Hildebrandt, S. R., Hoyland, R., Hughes, N., Janssen, M., Jukkala, P., Kettle, D., Kilpia, V. H., Laaninen, M., Lapolla, P. M., Lawrence, C. R., Leahy, J. P., Leonardi, R., Leutenegger, P., Levin, S., Lilje, P. B., Lowe, S. R., Lubin, D. Lawson P. M., Maino, D., Malaspina, M., Maris, M., Marti-Canales, J., Martinez-Gonzalez, E., Mediavilla, A., Meinhold, P., Miccolis, M., Morgante, G., Natoli, P., Nesti, R., Pagan, L., Paine, C., Partridge, B., Pascual, J. P., Pasian, F., Pearson, D., Pecora, M., Perrotta, F., Platania, P., Pospieszalski, M., Poutanen, T., Prina, M., Rebolo, R., Roddis, N., Rubino-Martin, J. A., Salmon, n M. J., Sandri, M., Seiffert, M., Silvestri, R., Simonetto, A., Sjoman, P., Smoot, G. F., Sozzi, C., Stringhetti, L., Taddei, E., Tauber, J., Terenzi, L., Tomasi, M., Tuovinen, J., Valenziano, L., Varis, J., Vittorio, N., Wade, L. A., Wilkinson, A., Winder, F., Zacchei, A., Zonca, A.
In this paper we present the Low Frequency Instrument (LFI), designed and developed as part of the Planck space mission, the ESA program dedicated to precision imaging of the cosmic microwave background (CMB). Planck-LFI will observe the full sky in
Externí odkaz:
http://arxiv.org/abs/1001.3321
Autor:
Fisher, J. R., Bradley, R. F., Brisken, W. F., Cotton, W. D., Emerson, D. T., Kerr, A. R., Lacasse, R. J., Morgan, M. A., Napier, P. J., Norrod, R. D., Payne, J. M., Pospieszalski, M. W., Symmes, A., Thompson, A. R., Webber, J. C.
This white paper offers cautionary observations about the planning and development of new, large radio astronomy instruments. Complexity is a strong cost driver so every effort should be made to assign differing science requirements to different inst
Externí odkaz:
http://arxiv.org/abs/0908.3826
Autor:
Sievers, J. L., Mason, B. S., Weintraub, L., Achermann, C., Altamirano, P., Bond, J. R., Bronfman, L., Bustos, R., Contaldi, C., Dickinson, C., Jones, M. E., May, J., Myers, S. T., Oyarce, N., Padin, S., Pearson, T. J., Pospieszalski, M., Readhead, A. C. S., Reeves, R., Shepherd, M. C., Taylor, A. C., Torres, S.
We present final results on the angular power spectrum of total intensity anisotropies in the CMB from the CBI. Our analysis includes all primordial anisotropy data collected between January 2000 and April 2005, and benefits significantly from an imp
Externí odkaz:
http://arxiv.org/abs/0901.4540
Autor:
Sievers, J. L., Achermann, C., Bond, J. R., Bronfman, L., Bustos, R., Contaldi, C. R., Dickinson, C., Ferreira, P. G., Jones, M. E., Lewis, A. M., Mason, B. S., May, J., Myers, S. T., Padin, S., Pearson, T. J., Pospieszalski, M., Readhead, A. C. S., Reeves, R., Taylor, A. C., Torres, S.
Publikováno v:
Astrophys.J.660:976-987,2007
We present new measurements of the power spectra of the E-mode of CMB polarization, the temperature T, the cross-correlation of E and T, and upper limits on the B-mode from 2.5 years of dedicated Cosmic Background Imager (CBI) observations. Both raw
Externí odkaz:
http://arxiv.org/abs/astro-ph/0509203