7 results on '"Nesti, R"'
Search Results
2. Planckpre-launch status: ThePlanck-LFI programme
- Author
-
Mandolesi, N., primary, Bersanelli, M., additional, Butler, R. C., additional, Artal, E., additional, Baccigalupi, C., additional, Balbi, A., additional, Banday, A. J., additional, Barreiro, R. B., additional, Bartelmann, M., additional, Bennett, K., additional, Bhandari, P., additional, Bonaldi, A., additional, Borrill, J., additional, Bremer, M., additional, Burigana, C., additional, Bowman, R. C., additional, Cabella, P., additional, Cantalupo, C., additional, Cappellini, B., additional, Courvoisier, T., additional, Crone, G., additional, Cuttaia, F., additional, Danese, L., additional, D'Arcangelo, O., additional, Davies, R. D., additional, Davis, R. J., additional, De Angelis, L., additional, de Gasperis, G., additional, De Rosa, A., additional, De Troia, G., additional, de Zotti, G., additional, Dick, J., additional, Dickinson, C., additional, Diego, J. M., additional, Donzelli, S., additional, Dörl, U., additional, Dupac, X., additional, Enßlin, T. A., additional, Eriksen, H. K., additional, Falvella, M. C., additional, Finelli, F., additional, Frailis, M., additional, Franceschi, E., additional, Gaier, T., additional, Galeotta, S., additional, Gasparo, F., additional, Giardino, G., additional, Gomez, F., additional, Gonzalez-Nuevo, J., additional, Górski, K. M., additional, Gregorio, A., additional, Gruppuso, A., additional, Hansen, F., additional, Hell, R., additional, Herranz, D., additional, Herreros, J. M., additional, Hildebrandt, S., additional, Hovest, W., additional, Hoyland, R., additional, Huffenberger, K., additional, Janssen, M., additional, Jaffe, T., additional, Keihänen, E., additional, Keskitalo, R., additional, Kisner, T., additional, Kurki-Suonio, H., additional, Lähteenmäki, A., additional, Lawrence, C. R., additional, Leach, S. M., additional, Leahy, J. P., additional, Leonardi, R., additional, Levin, S., additional, Lilje, P. B., additional, López-Caniego, M., additional, Lowe, S. R., additional, Lubin, P. M., additional, Maino, D., additional, Malaspina, M., additional, Maris, M., additional, Marti-Canales, J., additional, Martinez-Gonzalez, E., additional, Massardi, M., additional, Matarrese, S., additional, Matthai, F., additional, Meinhold, P., additional, Melchiorri, A., additional, Mendes, L., additional, Mennella, A., additional, Morgante, G., additional, Morigi, G., additional, Morisset, N., additional, Moss, A., additional, Nash, A., additional, Natoli, P., additional, Nesti, R., additional, Paine, C., additional, Partridge, B., additional, Pasian, F., additional, Passvogel, T., additional, Pearson, D., additional, Pérez-Cuevas, L., additional, Perrotta, F., additional, Polenta, G., additional, Popa, L. A., additional, Poutanen, T., additional, Prezeau, G., additional, Prina, M., additional, Rachen, J. P., additional, Rebolo, R., additional, Reinecke, M., additional, Ricciardi, S., additional, Riller, T., additional, Rocha, G., additional, Roddis, N., additional, Rohlfs, R., additional, Rubiño-Martin, J. A., additional, Salerno, E., additional, Sandri, M., additional, Scott, D., additional, Seiffert, M., additional, Silk, J., additional, Simonetto, A., additional, Smoot, G. F., additional, Sozzi, C., additional, Sternberg, J., additional, Stivoli, F., additional, Stringhetti, L., additional, Tauber, J., additional, Terenzi, L., additional, Tomasi, M., additional, Tuovinen, J., additional, Türler, M., additional, Valenziano, L., additional, Varis, J., additional, Vielva, P., additional, Villa, F., additional, Vittorio, N., additional, Wade, L., additional, White, M., additional, White, S., additional, Wilkinson, A., additional, Zacchei, A., additional, and Zonca, A., additional
- Published
- 2010
- Full Text
- View/download PDF
3. Planckpre-launch status: Design and description of the Low Frequency Instrument
- Author
-
Bersanelli, M., primary, Mandolesi, N., additional, Butler, R. C., additional, Mennella, A., additional, Villa, F., additional, Aja, B., additional, Artal, E., additional, Artina, E., additional, Baccigalupi, C., additional, Balasini, M., additional, Baldan, G., additional, Banday, A., additional, Bastia, P., additional, Battaglia, P., additional, Bernardino, T., additional, Blackhurst, E., additional, Boschini, L., additional, Burigana, C., additional, Cafagna, G., additional, Cappellini, B., additional, Cavaliere, F., additional, Colombo, F., additional, Crone, G., additional, Cuttaia, F., additional, D'Arcangelo, O., additional, Danese, L., additional, Davies, R. D., additional, Davis, R. J., additional, De Angelis, L., additional, De Gasperis, G. C., additional, De La Fuente, L., additional, De Rosa, A., additional, De Zotti, G., additional, Falvella, M. C., additional, Ferrari, F., additional, Ferretti, R., additional, Figini, L., additional, Fogliani, S., additional, Franceschet, C., additional, Franceschi, E., additional, Gaier, T., additional, Garavaglia, S., additional, Gomez, F., additional, Gorski, K., additional, Gregorio, A., additional, Guzzi, P., additional, Herreros, J. M., additional, Hildebrandt, S. R., additional, Hoyland, R., additional, Hughes, N., additional, Janssen, M., additional, Jukkala, P., additional, Kettle, D., additional, Kilpiä, V. H., additional, Laaninen, M., additional, Lapolla, P. M., additional, Lawrence, C. R., additional, Lawson, D., additional, Leahy, J. P., additional, Leonardi, R., additional, Leutenegger, P., additional, Levin, S., additional, Lilje, P. B., additional, Lowe, S. R., additional, Lubin, P. M., additional, Maino, D., additional, Malaspina, M., additional, Maris, M., additional, Marti-Canales, J., additional, Martinez-Gonzalez, E., additional, Mediavilla, A., additional, Meinhold, P., additional, Miccolis, M., additional, Morgante, G., additional, Natoli, P., additional, Nesti, R., additional, Pagan, L., additional, Paine, C., additional, Partridge, B., additional, Pascual, J. P., additional, Pasian, F., additional, Pearson, D., additional, Pecora, M., additional, Perrotta, F., additional, Platania, P., additional, Pospieszalski, M., additional, Poutanen, T., additional, Prina, M., additional, Rebolo, R., additional, Roddis, N., additional, Rubiño-Martin, J. A., additional, Salmon, M. J., additional, Sandri, M., additional, Seiffert, M., additional, Silvestri, R., additional, Simonetto, A., additional, Sjoman, P., additional, Smoot, G. F., additional, Sozzi, C., additional, Stringhetti, L., additional, Taddei, E., additional, Tauber, J., additional, Terenzi, L., additional, Tomasi, M., additional, Tuovinen, J., additional, Valenziano, L., additional, Varis, J., additional, Vittorio, N., additional, Wade, L. A., additional, Wilkinson, A., additional, Winder, F., additional, Zacchei, A., additional, and Zonca, A., additional
- Published
- 2010
- Full Text
- View/download PDF
4. Water maser variability over 20 years in a large sample of star-forming regions: the complete database*
- Author
-
Felli, M., Brand, J., Cesaroni, R., Codella, C., Comoretto, G., Di Franco, S., Massi, F., Moscadelli, L., Nesti, R., Olmi, L., Palagi, F., Panella, D., Valdettaro, R., Felli, M., Brand, J., Cesaroni, R., Codella, C., Comoretto, G., Di Franco, S., Massi, F., Moscadelli, L., Nesti, R., Olmi, L., Palagi, F., Panella, D., and Valdettaro, R.
- Abstract
Context.Water vapor emission at 22 GHz from masers associated with star-forming regions is highly variable.
- Published
- 2007
- Full Text
- View/download PDF
5. Trade-off between angular resolution and straylight contamination in the PLANCK Low Frequency Instrument
- Author
-
Sandri, M., Villa, F., Nesti, R., Burigana, C., Bersanelli, M., Mandolesi, N., Sandri, M., Villa, F., Nesti, R., Burigana, C., Bersanelli, M., and Mandolesi, N.
- Abstract
The study of cosmic microwave background (CMB) anisotropies represents one of the most powerful cosmological tools. After the great success of the two NASA satellite missions COBE and WMAP, Planckis the third generation of mm-wave instruments designed for space observations of CMB anisotropies within the new Cosmic Vision 2020 ESA Science Programme. Planckwill map the whole sky with unprecedented sensitivity, angular resolution and frequency coverage, using two instruments that share the focal region of a 1.5 m off-axis dual reflector telescope: the Low Frequency Instrument (LFI) and the High Frequency Instrument (HFI). In the optimisation of the optical interfaces of the LFI two concurrent demands have to be satisfied: the very good angular resolution (which affects the ability to reconstruct the angular power spectrum of the CMB anisotropies at high multipoles) and a very low level of straylight contamination (which may be one of the most serious sources of systematic effects). We present the results of the optical simulations aimed at establishing the trade-off between angular resolution and straylight rejection, carried out for the 100 GHz channel of the PlanckLFI. Antenna patterns of different models of dual profiled corrugated conical feed horns have been simulated using advanced simulation techniques, considering the whole spacecraft geometry in order to obtain reliable sidelobe predictions. We show the optical computation accuracy necessary to provide strong straylight evaluation in reasonable computational time and demonstrate the inadequacy of a Gaussian feed model in realistic far beam predictions.
- Published
- 2004
- Full Text
- View/download PDF
6. Planck early results. III. First assessment of the Low Frequency Instrument in-flight performance ⋆
- Author
-
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., Rubi no-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., and Winder, F.
- Abstract
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 preliminary evaluation of the impact of the main systematic effects is presented. For each of the performance parameters, we outline the methods used to obtain them from the flight data and provide a comparison with pre-launch ground assessments, which are essentially confirmed in flight.
- Published
- 2011
- Full Text
- View/download PDF
7. Planckpre-launch status: The Planck-LFI programme
- Author
-
Mandolesi, N., Bersanelli, M., Butler, R. C., Artal, E., Baccigalupi, C., Balbi, A., Banday, A. J., Barreiro, R. B., Bartelmann, M., Bennett, K., Bhandari, P., Bonaldi, A., Borrill, J., Bremer, M., Burigana, C., Bowman, R. C., Cabella, P., Cantalupo, C., Cappellini, B., Courvoisier, T., Crone, G., Cuttaia, F., Danese, L., D'Arcangelo, O., Davies, R. D., Davis, R. J., De Angelis, L., de Gasperis, G., De Rosa, A., De Troia, G., de Zotti, G., Dick, J., Dickinson, C., Diego, J. M., Donzelli, S., Dörl, U., Dupac, X., Enßlin, T. A., Eriksen, H. K., Falvella, M. C., Finelli, F., Frailis, M., Franceschi, E., Gaier, T., Galeotta, S., Gasparo, F., Giardino, G., Gomez, F., Gonzalez-Nuevo, J., Górski, K. M., Gregorio, A., Gruppuso, A., Hansen, F., Hell, R., Herranz, D., Herreros, J. M., Hildebrandt, S., Hovest, W., Hoyland, R., Huffenberger, K., Janssen, M., Jaffe, T., Keihänen, E., Keskitalo, R., Kisner, T., Kurki-Suonio, H., Lähteenmäki, A., Lawrence, C. R., Leach, S. M., Leahy, J. P., Leonardi, R., Levin, S., Lilje, P. B., López-Caniego, M., Lowe, S. R., Lubin, P. M., Maino, D., Malaspina, M., Maris, M., Marti-Canales, J., Martinez-Gonzalez, E., Massardi, M., Matarrese, S., Matthai, F., Meinhold, P., Melchiorri, A., Mendes, L., Mennella, A., Morgante, G., Morigi, G., Morisset, N., Moss, A., Nash, A., Natoli, P., Nesti, R., Paine, C., Partridge, B., Pasian, F., Passvogel, T., Pearson, D., Pérez-Cuevas, L., Perrotta, F., Polenta, G., Popa, L. A., Poutanen, T., Prezeau, G., Prina, M., Rachen, J. P., Rebolo, R., Reinecke, M., Ricciardi, S., Riller, T., Rocha, G., Roddis, N., Rohlfs, R., Rubiño-Martin, J. A., Salerno, E., Sandri, M., Scott, D., Seiffert, M., Silk, J., Simonetto, A., Smoot, G. F., Sozzi, C., Sternberg, J., Stivoli, F., Stringhetti, L., Tauber, J., Terenzi, L., Tomasi, M., Tuovinen, J., Türler, M., Valenziano, L., Varis, J., Vielva, P., Villa, F., Vittorio, N., Wade, L., White, M., White, S., Wilkinson, A., Zacchei, A., and Zonca, A.
- Abstract
This paper provides an overview of the Low Frequency Instrument (LFI) programme within the ESA Planck mission. The LFI instrument has been developed to produce high precision maps of the microwave sky at frequencies in the range 27–77 GHz, below the peak of the cosmic microwave background (CMB) radiation spectrum. The scientific goals are described, ranging from fundamental cosmology to Galactic and extragalactic astrophysics. The instrument design and development are outlined, together with the model philosophy and testing strategy. The instrument is presented in the context of the Planck mission. The LFI approach to ground and inflight calibration is described. We also describe the LFI ground segment. We present the results of a number of tests demonstrating the capability of the LFI data processing centre (DPC) to properly reduce and analyse LFI flight data, from telemetry information to calibrated and cleaned time ordered data, sky maps at each frequency (in temperature and polarization), component emission maps (CMB and diffuse foregrounds), catalogs for various classes of sources (the Early Release Compact Source Catalogue and the Final Compact Source Catalogue). The organization of the LFI consortium is briefly presented as well as the role of the core team in data analysis and scientific exploitation. All tests carried out on the LFI flight model demonstrate the excellent performance of the instrument and its various subunits. The data analysis pipeline has been tested and its main steps verified. In the first three months after launch, the commissioning, calibration, performance, and verification phases will be completed, after which Planck will begin its operational life, in which LFI will have an integral part.
- Published
- 2010
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.