Search

Your search keyword '"Vinyajkin, E."' showing total 33 results
Start Over Author "Vinyajkin, E."
33 results on '"Vinyajkin, E."'

1. The Secular Decrease of the Crab Nebula at 927 and 151.5 MHz

Author

Vinyajkin, E. N.

Subjects
Astrophysics
Abstract

Long-term measurements have been carried out of the Crab Nebula radio emission flux density relative to Orion A at 927 MHz and relative to Cygnus A and Virgo A at 151.5 MHz. As a result the mean rates have been found of the secular change of the Crab Nebula radio emission flux density: $d_m (927\hbox{MHz})=-(0.18\pm0.10)$% year$^{-1}$ (over the period 1977--2000), $d_m (151.5\hbox{MHz})=- (0.32\pm0.08)$% year$^{-1}$ (over the period 1980--2003)., Comment: 2 pages, 2 figures, poster report at Supernovae as Cosmological Lighthouses, 16-19 June 2004, Padua, Italy

Published
2005

2. Secular Decrease and Random Variations of Cassiopeia A at 151.5 and 927 MHz

Author

Vinyajkin, E. N. and Razin, V. A.

Subjects
Astrophysics
Abstract

Long-term measurements of the radio flux density of Cassiopeia A relative to Cygnus A have been carried out at 927 and 151.5 MHz. It was found the following mean secular decrease rates of the radio emission of Cassiopeia A: $(0.72\pm 0.03)% \hbox{year}^{-1}$ at 927 MHz (for the period 1977--2002) and $(0.88\pm 0.09)% \hbox{year}^{-1}$ at 151.5 MHz (for the period 1980--2002). These values of the secular decrease rate obtained over the period of the last 25 years are substantially less than those of Baars et al. (1977). This indicates to the slowing down of Cassiopeia A radio emission secular decrease. In addition to this large scale time variation of Cassiopeia A flux density the measurements have also shown a small scale (a few years) time variations over the smooth secular decrease., Comment: 6 pages, 4 figures, poster report at the IAU Colloquium 192, Supernovae (10 Years of SN1993J), 22-26 April 2003, Valencia-Spain; eds. J.M.Marcaide, K.W.Weiler

Published
2004

3. Faraday Rotation and Depolarization of Galactic Radio Emission

Author

Vinyajkin, E. N.

Subjects
Astrophysics
Abstract

A joint action of depth and bandwidth depolarization in the interstellar medium is considered using a model of N homogeneous synchrotron layers with Faraday rotation. The bandwidth depolarization can be used in multifrequency polarimetric observations of Galactic diffuse synchrotron radio emission to investigate the interstellar ionized medium and magnetic field in the direction to the Faraday-thick objects of known distances., Comment: 6 pages, 6 figures, to appear in "The Magnetized Interstellar Medium", eds. B. Uyaniker, W. Reich & R. Wielebinski

Published
2004

4. The Sky Polarization Observatory

Author

Cortiglioni, S., Bernardi, G., Carretti, E., Casarini, L., Cecchini, S., Macculi, C., Ramponi, M., Sbarra, C., Monari, J., Orfei, A., Poloni, M., Poppi, S., Boella, G., Bonometto, S., Colombo, L., Gervasi, M., Sironi, G., Zannoni, M., Baralis, M., Peverini, O. A., Tascone, R., Virone, G., Fabbri, R., Natale, V., Nicastro, L., Ng, K-W., Vinyajkin, E. N., Razin, V. A., Sazhin, M. V., Strukov, I. A., and Negri, B.

Subjects
Astrophysics
Abstract

SPOrt is an ASI-funded experiment specifically designed to measure the sky polarization at 22, 32 and 90 GHz, which was selected in 1997 by ESA to be flown on the International Space Station. Starting in 2006 and for at least 18 months, it will be taking direct and simultaneous measurements of the Stokes parameters Q and U at 660 sky pixels, with FWHM=7 degrees. Due to development efforts over the past few years, the design specifications have been significantly improved with respect to the first proposal. Here we present an up-to-date description of the instrument, which now warrants a pixel sensitivity of 1.7 microK for the polarization of the cosmic background radiation, assuming two years of observations. We discuss SPOrt scientific goals in the light of WMAP results, in particular in connection with the emerging double-reionization cosmological scenario., Comment: 53 pages, 22 figures, 1 reference replaced

Published
2004
Full Text
View/download PDF

5. The BaR-SPOrt Experiment

Author

Zannoni, M., Cortiglioni, S., Bernardi, G., Carretti, E., Cecchini, S., Macculi, C., Morelli, E., Sbarra, C., Ventura, G., Nicastro, L., Monari, J., Poloni, M., Poppi, S., Natale, V., Baralis, M., Peverini, O., Tascone, R., Virone, G., Boscaleri, A., Pascale, E., Boella, G., Bonometto, S., Gervasi, M., Sironi, G., Tucci, M., Nesti, R., Fabbri, R., de Bernardis, P., De Petris, M., Masi, S., Sazhin, M. V., and Vinyajkin, E. N.

Subjects
Astrophysics
Abstract

BaR-SPOrt (Balloon-borne Radiometers for Sky Polarisation Observations) is an experiment to measure the linearly polarized emission of sky patches at 32 and 90 GHz with sub-degree angular resolution. It is equipped with high sensitivity correlation polarimeters for simultaneous detection of both the U and Q stokes parameters of the incident radiation. On-axis telescope is used to observe angular scales where the expected polarization of the Cosmic Microwave Background (CMBP) peaks. This project shares most of the know-how and sophisticated technology developed for the SPOrt experiment onboard the International Space Station. The payload is designed to flight onboard long duration stratospheric balloons both in the Northern and Southern hemispheres where low foreground emission sky patches are accessible. Due to the weakness of the expected CMBP signal (in the range of microK), much care has been spent to optimize the instrument design with respect to the systematics generation, observing time efficiency and long term stability. In this contribution we present the instrument design, and first tests on some components of the 32 GHz radiometer., Comment: 12 pages, 10 figures, Astronomical Telescopes and Instrumentation (Polaimetry in Astronomy) Hawaii August 2002 SPIE Meeting

Published
2003
Full Text
View/download PDF

6. SPOrt: an Experiment Aimed at Measuring the Large Scale Cosmic Microwave Background Polarization

Author

Carretti, E., Cortiglioni, S., Bernardi, G., Cecchini, S., Macculi, C., Sbarra, C., Monari, J., Orfei, A., Poloni, M., Poppi, S., Boella, G., Bonometto, S., Gervasi, M., Sironi, G., Zannoni, M., Tucci, M., Baralis, M., Peverini, O. A., Tascone, R., Virone, G., Fabbri, R., Nicastro, L., Ng, K. -W., Razin, V. A., Vinyajkin, E. N., Sazhin, M. V., and Strukov, I. A.

Subjects
Astrophysics
Abstract

SPOrt (Sky Polarization Observatory) is a space experiment to be flown on the International Space Station during Early Utilization Phase aimed at measuring the microwave polarized emission with FWHM = 7deg, in the frequency range 22-90 GHz. The Galactic polarized emission can be observed at the lower frequencies and the polarization of Cosmic Microwave Background (CMB) at 90 GHz, where contaminants are expected to be less important. The extremely low level of the CMB Polarization signal (< 1 uK) calls for intrinsically stable radiometers. The SPOrt instrument is expressly devoted to CMB polarization measurements and the whole design has been optimized for minimizing instrumental polarization effects. In this contribution we present the receiver architecture based on correlation techniques, the analysis showing its intrinsic stability and the custom hardware development carried out to detect such a low signal., Comment: 9 pages, 5 figures, conference proceeding, to appear in "Polarimetry in Astronomy", SPIE Symposium on 'Astronomical Telescopes and Instrumentation', Waikoloa, August 22-28 2002

Published
2002
Full Text
View/download PDF

7. BaR-SPOrt: Balloon-Borne Radiometers for Sky Polarization Observations

Author

Sbarra, C., Cortiglioni, S., Bernardi, G., Carretti, E., Cecchini, S., Macculi, C., Ventura, G., Baralis, M., Peverini, O., Tascone, R., Boella, G., Bonometto, S., Gervasi, M., Sironi, G., Tucci, M., Zannoni, M., Natale, V., Nesti, R., Fabbri, R., Monari, J., Poppi, S., Nicastro, L., Raffaele, R. Di, Boscaleri, A., Pascale, E., Bernardis, P. de, Petris, M. De, Masi, S., Sazhin, M. V., Vinyajkin, E. N., Shaver, Peter A., editor, DiLella, Luigi, editor, and Giménez, Alvaro, editor

Published
2003
Full Text
View/download PDF

8. The Sky Polarization Observatory (SPOrt) Programme

Author

Carretti, E., Cortiglioni, S., Bernardi, G., Cecchini, S., Macculi, C., Sbarra, C., Monari, J., Orfei, A., Poppi, S., Boella, G., Bonometto, S., Gervasi, M., Sironi, G., Zannoni, M., Tucci, M., Baralis, M., Peverini, O. A., Tascone, R., Fabbri, R., Nicastro, L., Ng, K. W., Razin, V. A., Vinyajkin, E. N., Sazhin, M. V., Strukov, I. A., Shaver, Peter A., editor, DiLella, Luigi, editor, and Giménez, Alvaro, editor

Published
2003
Full Text
View/download PDF

10. ON THE EVOLUTION OF RADIO EMISSION OF THE TYCHO BRAHE'S SUPERNOVA REMNANT (3C10)

Author

Vinyajkin, E. N.; Radiophysical Research Institute (NIRFI), 25, B.Pecherskaya st., Nizhnij Novgorod, GSP-51, 603600, Russia and Vinyajkin, E. N.; Radiophysical Research Institute (NIRFI), 25, B.Pecherskaya st., Nizhnij Novgorod, GSP-51, 603600, Russia

Abstract

Basing on long-term (1966-1998) measurements at the frequency 86 MHz the mean rate of the secular decrease of Tycho Brahe's supernova remnant (SNR) radio emission flux density has been estimated as (0.92 ± 0.70)%yr -1. The decrease of Tycho Brahe's SNR radio emission is not uniform in time. The rate of the secular decrease of this SNR radio emission is frequency independent in the limits of the errors. The weighted mean value of the rate of the secular decrease of the Tycho Brahe's SNR radio emission in the frequency range 86-5000 MHz is (0.41 ± 0.02)%yr -1.

Published
2017

11. The BaR-SPOrt experiment: Measuring the CMBP E-mode power spectrum from Dome C

Author

Carretti, E, Cortiglioni, S, Bernardi, G, Casarini, L, Cecchini, S, Macculi, C, Ramponi, M, Sbarra, C, Ventura, G, Monari, J, Poloni, M, Poppi, S, Baralis, M, Peverini, O, Tascone, R, Virone, G, Zannoni, M, Bonometto, S, Colombo, L, Gervasi, M, Sironi, G, Fabbri, R, Natale, V, Nesti, R, Nicastro, L, de Bernardis, P, Masi, S, de Petris, M, Boscaleri, A, Sazhin, M, Vinyajkin, E, CASARINI, LUCIANO, ZANNONI, MARIO, BONOMETTO, SILVIO, GERVASI, MASSIMO, SIRONI, GIORGIO, Vinyajkin, E., Carretti, E, Cortiglioni, S, Bernardi, G, Casarini, L, Cecchini, S, Macculi, C, Ramponi, M, Sbarra, C, Ventura, G, Monari, J, Poloni, M, Poppi, S, Baralis, M, Peverini, O, Tascone, R, Virone, G, Zannoni, M, Bonometto, S, Colombo, L, Gervasi, M, Sironi, G, Fabbri, R, Natale, V, Nesti, R, Nicastro, L, de Bernardis, P, Masi, S, de Petris, M, Boscaleri, A, Sazhin, M, Vinyajkin, E, CASARINI, LUCIANO, ZANNONI, MARIO, BONOMETTO, SILVIO, GERVASI, MASSIMO, SIRONI, GIORGIO, and Vinyajkin, E.

Abstract

The BaR-SPOrt experiment is designed to measure the E-mode power spectrum of the Cosmic Microwave Background Polarization (CMBP) in the multipole range 50 < I < 1000. In the current configuration at 32 GHz it can explore up to l = 400. Recent low frequency observations of the target region show that the synchrotron emission should not contamine the CMBP already at 32 GHz. A 6month observation of a 6° × 6° sky area during the polar night, in ideal environmental conditions, will allow the Italian-French collaboration to both measure the E-mode power spectrum with appropriate sensitivity and perform important tests of the anomalous dust emission. The BaR-SPOrt 32 GHz instrument, now under test and ready for operations by Spring 2005, is proposed for 1-2 years Winter operations at Dome C.

Published
2005

12. BaR-SPOrt: An experiment to measure the linearly polarized sky emission from both the cosmic microwave background and foregrounds

Author

Cortiglioni, S, Bernardi, G, Carretti, E, Cecchini, S, Macculi, C, Sbarra, C, Ventura, G, Baralis, M, Peverini, O, Tascone, R, Bonometto, S, Colombo, L, Sironi, G, Zannoni, M, Natale, V, Nesti, R, Fabbri, R, Monari, J, Poloni, M, Poppi, S, Nicastro, L, Boscaleri, A, de Bernardis, P, Masi, S, Sazhin, M, Vinyajkin, E, Vinyajkin, E., BONOMETTO, SILVIO, SIRONI, GIORGIO, ZANNONI, MARIO, Cortiglioni, S, Bernardi, G, Carretti, E, Cecchini, S, Macculi, C, Sbarra, C, Ventura, G, Baralis, M, Peverini, O, Tascone, R, Bonometto, S, Colombo, L, Sironi, G, Zannoni, M, Natale, V, Nesti, R, Fabbri, R, Monari, J, Poloni, M, Poppi, S, Nicastro, L, Boscaleri, A, de Bernardis, P, Masi, S, Sazhin, M, Vinyajkin, E, Vinyajkin, E., BONOMETTO, SILVIO, SIRONI, GIORGIO, and ZANNONI, MARIO

Abstract

The BaR-SPOrt experiment is aimed at measuring the polarization of the microwave sky at 32 and 90 GHz with sub-degree angular resolution. In this spectral and angular window it is possible to detect the polarization of the cosmic microwave background, which is one of the most ambitious goals of the today astrophysics. The experiment has been designed to fly onboard a Long Duration Balloon to be launched from polar regions, where it is possible to observe low foreground emission sky patches situated at high galactic latitudes.

Published
2003

13. The Sky Polarization Observatory (SPOrt) Programme

Author

Carretti, E., primary, Cortiglioni, S., additional, Bernardi, G., additional, Cecchini, S., additional, Macculi, C., additional, Sbarra, C., additional, Monari, J., additional, Orfei, A., additional, Poppi, S., additional, Boella, G., additional, Bonometto, S., additional, Gervasi, M., additional, Sironi, G., additional, Zannoni, M., additional, Tucci, M., additional, Baralis, M., additional, Peverini, O. A., additional, Tascone, R., additional, Fabbri, R., additional, Nicastro, L., additional, Ng, K. W., additional, Razin, V. A., additional, Vinyajkin, E. N., additional, Sazhin, M. V., additional, and Strukov, I. A., additional

Full Text
View/download PDF

14. The Sky Polarization Observatory

Author

Cortiglioni, S, Bernardi, G, Carretti, E, Casarini, L, Cecchini, S, Macculi, C, Ramponi, M, Sbarra, C, Monari, J, Orfei, A, Poloni, M, Poppi, S, Boella, G, Bonometto, S, Colombo, L, Gervasi, M, Sironi, G, Zannoni, M, Baralis, M, Peverini, O, Tascone, R, Virone, G, Fabbri, R, Natale, V, Nicastro, L, Ng, K, Vinyajkin, E, Razin, V, Sazhin, M, Strukov, I, Negri, B, Peverini, OA, Ng, K. W, Vinyajkin, EN, Razin, VA, Sazhin, MV, Strukov, IA, Negri, B., BOELLA, GIULIANO FILIPPO, BONOMETTO, SILVIO, GERVASI, MASSIMO, SIRONI, GIORGIO, ZANNONI, MARIO, Cortiglioni, S, Bernardi, G, Carretti, E, Casarini, L, Cecchini, S, Macculi, C, Ramponi, M, Sbarra, C, Monari, J, Orfei, A, Poloni, M, Poppi, S, Boella, G, Bonometto, S, Colombo, L, Gervasi, M, Sironi, G, Zannoni, M, Baralis, M, Peverini, O, Tascone, R, Virone, G, Fabbri, R, Natale, V, Nicastro, L, Ng, K, Vinyajkin, E, Razin, V, Sazhin, M, Strukov, I, Negri, B, Peverini, OA, Ng, K. W, Vinyajkin, EN, Razin, VA, Sazhin, MV, Strukov, IA, Negri, B., BOELLA, GIULIANO FILIPPO, BONOMETTO, SILVIO, GERVASI, MASSIMO, SIRONI, GIORGIO, and ZANNONI, MARIO

Abstract

The Sky Polarization Observatory (SPOrt) is an ASI-funded experiment specifically designed to measure the sky polarization at 22, 32 and 90 GHz, which was selected in 1997 by ESA to be flown on the International Space Station. Starting in 2006 and for at least 18 months, it will be taking direct and simultaneous measurements of the Stokes parameters Q and U at 660 sky pixels, with FWHM=7°. Due to development efforts over the past few years, the design specifications have been significantly improved with respect to the first proposal. Here we present an up-to-date description of the instrument, which now warrants a pixel sensitivity of 1.7 K for the polarization of the cosmic background radiation, assuming two years of observations. We discuss SPOrt scientific goals in the light of WMAP results, in particular in connection with the emerging double-reionization cosmological scenario.

Published
2004

15. SPOrt: An experiment aimed at measuring the large scale cosmic microwave background polarization

Author

Fineschi S., Carretti, E, Cortiglioni, S, Bernardi, G, Cecchini, S, Macculi, C, Sbarra, C, Monari, J, Orfei, A, Poloni, M, Poppi, S, Boella, G, Bonometto, S, Gervasi, M, Sironi, G, Zannoni, M, Tucci, M, Baralis, M, Peverini, O, Tascone, R, Virone, G, Fabbri, R, Nicastro, L, Ng, K, Razin, V, Vinyajkin, E, Sazhin, M, Strukov, I, BOELLA, GIULIANO FILIPPO, BONOMETTO, SILVIO, GERVASI, MASSIMO, SIRONI, GIORGIO, ZANNONI, MARIO, Peverini, OA, Ng, KW, Razin, VA, Vinyajkin, EN, Sazhin, MV, Strukov, IA, Fineschi S., Carretti, E, Cortiglioni, S, Bernardi, G, Cecchini, S, Macculi, C, Sbarra, C, Monari, J, Orfei, A, Poloni, M, Poppi, S, Boella, G, Bonometto, S, Gervasi, M, Sironi, G, Zannoni, M, Tucci, M, Baralis, M, Peverini, O, Tascone, R, Virone, G, Fabbri, R, Nicastro, L, Ng, K, Razin, V, Vinyajkin, E, Sazhin, M, Strukov, I, BOELLA, GIULIANO FILIPPO, BONOMETTO, SILVIO, GERVASI, MASSIMO, SIRONI, GIORGIO, ZANNONI, MARIO, Peverini, OA, Ng, KW, Razin, VA, Vinyajkin, EN, Sazhin, MV, and Strukov, IA

Published
2003

16. The Sky Polarization Observatory (SPOrt) Programme

Author

Carretti, E, Cortiglioni, S, Bernardi, G, Cecchini, S, Macculi, C, Sbarra, C, Monari, J, Orfei, A, Poppi, S, Boella, G, Bonometto, S, Gervasi, M, Sironi, G, Zannoni, M, Tucci, M, Baralis, M, Peverini, O, Tascone, R, Fabbri, R, Nicastro, L, Ng, K, Razin, V, Vinyajkin, E, Sazhin, M, Strukov, I, Strukov, I., BOELLA, GIULIANO FILIPPO, BONOMETTO, SILVIO, GERVASI, MASSIMO, SIRONI, GIORGIO, ZANNONI, MARIO, Carretti, E, Cortiglioni, S, Bernardi, G, Cecchini, S, Macculi, C, Sbarra, C, Monari, J, Orfei, A, Poppi, S, Boella, G, Bonometto, S, Gervasi, M, Sironi, G, Zannoni, M, Tucci, M, Baralis, M, Peverini, O, Tascone, R, Fabbri, R, Nicastro, L, Ng, K, Razin, V, Vinyajkin, E, Sazhin, M, Strukov, I, Strukov, I., BOELLA, GIULIANO FILIPPO, BONOMETTO, SILVIO, GERVASI, MASSIMO, SIRONI, GIORGIO, and ZANNONI, MARIO

Abstract

SPOrt is an experiment aimed at making a polarization survey of the sky in the microwave range (22-90 GHz) on large angular scales (FWHM = 7degrees).

Published
2003

17. BaR-SPOrt: balloon-borne radiometers for sky polarization observations

Author

Sbarra, C, Cortiglioni, S, Bernardi, G, Carretti, E, Cecchini, S, Macculi, C, Ventura, G, Baralis, M, Peverini, O, Tascone, R, Boella, G, Bonometto, S, Gervasi, M, Sironi, G, Tucci, M, Zannoni, M, Natale, V, Nesti, R, Fabbri, R, Monari, J, Poppi, S, Nicastro, L, di Raffaele, R, Boscaleri, A, Pascale, E, de Bernardis, P, de Petris, M, Masi, S, Sazhin, M, Vinyajkin, E, Sazhin, MV, Vinyajkin, EN, BOELLA, GIULIANO FILIPPO, BONOMETTO, SILVIO, GERVASI, MASSIMO, SIRONI, GIORGIO, ZANNONI, MARIO, Sbarra, C, Cortiglioni, S, Bernardi, G, Carretti, E, Cecchini, S, Macculi, C, Ventura, G, Baralis, M, Peverini, O, Tascone, R, Boella, G, Bonometto, S, Gervasi, M, Sironi, G, Tucci, M, Zannoni, M, Natale, V, Nesti, R, Fabbri, R, Monari, J, Poppi, S, Nicastro, L, di Raffaele, R, Boscaleri, A, Pascale, E, de Bernardis, P, de Petris, M, Masi, S, Sazhin, M, Vinyajkin, E, Sazhin, MV, Vinyajkin, EN, BOELLA, GIULIANO FILIPPO, BONOMETTO, SILVIO, GERVASI, MASSIMO, SIRONI, GIORGIO, and ZANNONI, MARIO

Abstract

BaR-SPOrt, funded by ASI (Italian Space Agency), is a 32 (90) GHz balloon-borne correlation polarimeter for direct measurements of the Q and U Stokes parameters, with an angular resolution of 0.6° (0.2°). Aim of the experiment is the detection of the polarized emission of the diffuse Galactic Background and the Cosmic Microwave Background (CMB). The most likely launch site is Antarctica (2 to 4-week flight). Kiruna (Sweden, 1-week flight) and Svalbard (Norway, > 1-week flight) are possible launch site to observe the Northern sky

Published
2003

18. The BaR-SPOrt experiment

Author

Fineschi, S, Zannoni, M, Cortiglioni, S, Bernardi, G, Carretti, E, Cecchini, S, Macculi, C, Morelli, E, Sbarra, C, Ventura, G, Nicastro, L, Monari, J, Poloni, M, Poppi, S, Natale, V, Baralis, M, Peverini, O, Tascone, R, Virone, G, Boscaleri, A, Pascale, E, Boella, G, Bonometto, S, Gervasi, M, Sironi, G, Tucci, M, Nesti, R, Fabbri, R, De Bernardis, P, De Petris, M, Masi, S, Sazhin, M, Vinyajkin, E, ZANNONI, MARIO, BOELLA, GIULIANO FILIPPO, BONOMETTO, SILVIO, GERVASI, MASSIMO, SIRONI, GIORGIO, Sazhin, MV, Vinyajkin, EN, Fineschi, S, Zannoni, M, Cortiglioni, S, Bernardi, G, Carretti, E, Cecchini, S, Macculi, C, Morelli, E, Sbarra, C, Ventura, G, Nicastro, L, Monari, J, Poloni, M, Poppi, S, Natale, V, Baralis, M, Peverini, O, Tascone, R, Virone, G, Boscaleri, A, Pascale, E, Boella, G, Bonometto, S, Gervasi, M, Sironi, G, Tucci, M, Nesti, R, Fabbri, R, De Bernardis, P, De Petris, M, Masi, S, Sazhin, M, Vinyajkin, E, ZANNONI, MARIO, BOELLA, GIULIANO FILIPPO, BONOMETTO, SILVIO, GERVASI, MASSIMO, SIRONI, GIORGIO, Sazhin, MV, and Vinyajkin, EN

Abstract

BaR-SPOrt (Balloon-borne Radiometers for Sky Polarisation Observations) is an experiment to measure the linearly polarized emission of sky patches at 32 and 90 GHz; with sub-degree angular resolution. It is equipped with high sensitivity correlation polarimeters for simultaneous detection of both the U and Q stokes parameters of the incident radiation. On-axis telescope is used to observe angular scales where the expected polarization of the Cosmic Microwave Background (CMBP) peaks. This project shares most of the know-how and sophisticated technology developed for the SPOrt experiment onboard the International Space Station. The payload is designed to flight onboard long duration stratospheric balloons both in the Northern and Southern hemispheres where low foreground emission sky patches are accessible. Due to the weakness of the expected CMBP signal (in the range of muK), much care has been spent to optimize the instrument design with respect to the systematics generation, observing time efficiency and long term stability. In this contribution we present the instrument design, and first tests on some components of the 32 GHz radiometer.

Published
2003

19. The SPOrt experiment

Author

Cecchini, S, Cortiglioni, S, Sault, R, Sbarra, C, Carretti, E, Baralis, M, Bernardi, G, Boella, G, Bonometto, S, Bruscoli, M, Fabbri, R, Gervasi, M, Macculi, C, Monari, J, Ng, K, Nicastro, L, Orfei, A, Peverini, O, Poppi, S, Razin, V, Sazhin, M, Sironi, G, Strukov, I, Tascone, R, Tucci, M, Vinyajkin, E, Zannoni, M, BOELLA, GIULIANO FILIPPO, BONOMETTO, SILVIO, GERVASI, MASSIMO, SIRONI, GIORGIO, ZANNONI, MARIO, Cecchini, S, Cortiglioni, S, Sault, R, Sbarra, C, Carretti, E, Baralis, M, Bernardi, G, Boella, G, Bonometto, S, Bruscoli, M, Fabbri, R, Gervasi, M, Macculi, C, Monari, J, Ng, K, Nicastro, L, Orfei, A, Peverini, O, Poppi, S, Razin, V, Sazhin, M, Sironi, G, Strukov, I, Tascone, R, Tucci, M, Vinyajkin, E, Zannoni, M, BOELLA, GIULIANO FILIPPO, BONOMETTO, SILVIO, GERVASI, MASSIMO, SIRONI, GIORGIO, and ZANNONI, MARIO

Abstract

SPOrt is a space experiment aimed at studying the polarization of the CMB and of the diffused Galactic Background in the microwave range (22-90 GHz). Here we present the project as well as its main scientific goals.

Published
2002

20. The SPOrt Program

Author

Cortiglioni, S, Baralis, M, Bernardi, G, Boella, G, Bonometto, S, Bruscoli, M, Carretti, E, Cecchini, S, Fabbri, R, Gervasi, M, Macculi, C, Monari, J, Musso, C, Nicastro, L, Orfei, A, Peverini, O, Poppi, S, Sbarra, C, Sironi, G, Tascone, R, Tucci, M, Vinyajkin, E, Zannoni, M, BOELLA, GIULIANO FILIPPO, BONOMETTO, SILVIO, GERVASI, MASSIMO, SIRONI, GIORGIO, ZANNONI, MARIO, Cortiglioni, S, Baralis, M, Bernardi, G, Boella, G, Bonometto, S, Bruscoli, M, Carretti, E, Cecchini, S, Fabbri, R, Gervasi, M, Macculi, C, Monari, J, Musso, C, Nicastro, L, Orfei, A, Peverini, O, Poppi, S, Sbarra, C, Sironi, G, Tascone, R, Tucci, M, Vinyajkin, E, Zannoni, M, BOELLA, GIULIANO FILIPPO, BONOMETTO, SILVIO, GERVASI, MASSIMO, SIRONI, GIORGIO, and ZANNONI, MARIO

Abstract

We present the Sky Polarization Observatory (SPOrt) Program, aiming at measuring the linear polarization of the microwave sky. The Program includes space experiments (SPOrt-ISS and SPOrt-EXPRESS), Balloon-borne radiometers (BaR-SPOrt) as well as ground-based observations. The project is described by putting special emphasis on the hardware solutions specifically designed to provide high sensitivity polarization measurements.

Published
2002

21. The BaR-SPOrt experiment: measuring the CMBP E-mode power spectrum from Dome C

Author

Carretti, E., primary, Cortiglioni, S., additional, Bernardi, G., additional, Casarini, L., additional, Cecchini, S., additional, Macculi, C., additional, Ramponi, M., additional, Sbarra, C., additional, Ventura, G., additional, Monari, J., additional, Poloni, M., additional, Poppi, S., additional, Baralis, M., additional, Peverini, O. A., additional, Tascone, R., additional, Virone, G., additional, Zannoni, M., additional, Bonometto, S., additional, Colombo, L., additional, Gervasi, M., additional, Sironi, G., additional, Fabbri, R., additional, Natale, V., additional, Nesti, R., additional, Nicastro, L., additional, de Bernardis, P., additional, Masi, S., additional, de Petris, M., additional, Boscaleri, A., additional, Sazhin, M., additional, and Vinyajkin, E., additional

Published
2005
Full Text
View/download PDF

22. The BaR-SPOrt experiment

Author

Zannoni, Mario, primary, Cortiglioni, S., additional, Bernardi, G., additional, Carretti, Ettore, additional, Cecchini, S., additional, Macculi, C., additional, Morelli, Ennio, additional, Sbarra, C., additional, Ventura, Giulio, additional, Nicastro, Luciano, additional, Monari, J., additional, Poloni, M., additional, Poppi, S., additional, Natale, Vincenzo, additional, Baralis, M., additional, Peverini, O., additional, Tascone, R., additional, Virone, G., additional, Boscaleri, Andrea, additional, Pascale, E., additional, Boella, Giuliano, additional, Bonometto, S., additional, Gervasi, Massimo, additional, Sironi, Giorgio, additional, Tucci, M., additional, Nesti, R., additional, Fabbri, R., additional, De Bernardis, Pierluigi, additional, DePetris, Marco, additional, Masi, S., additional, Sazhin, M. V., additional, and Vinyajkin, E. N., additional

Published
2003
Full Text
View/download PDF

24. The SPOrt experiment

Author

Carretti, E., primary, Baralis, M., additional, Bernardi, G., additional, Boella, G., additional, Bonometto, S., additional, Bruscoli, M., additional, Cecchini, S., additional, Cortiglioni, S., additional, Fabbri, R., additional, Gervasi, M., additional, Macculi, C., additional, Monari, J., additional, Ng, K. W., additional, Nicastro, L., additional, Orfei, A., additional, Peverini, O., additional, Poppi, S., additional, Razin, V. A., additional, Sazhin, M. V., additional, Sbarra, C., additional, Sironi, G., additional, Strukov, I. A., additional, Tascone, R., additional, Tucci, M., additional, Vinyajkin, E. N., additional, and Zannoni, M., additional

Published
2002
Full Text
View/download PDF

28. The SPOrt Program

Author

Cortiglioni, S., Baralis, M., Bernardi, G., Boella, G., Bonometto, S., Bruscoli, M., Carretti, E., Cecchini, S., Fabbri, R., Gervasi, M., Macculi, C., Monari, J., Musso, C., Nicastro, L., Orfei, A., Peverini, O., Sergio Poppi, Sbarra, C., Sironi, G., Tascone, R., Tucci, M., Vinyajkin, E., Zannoni, M., Cortiglioni, S, Baralis, M, Bernardi, G, Boella, G, Bonometto, S, Bruscoli, M, Carretti, E, Cecchini, S, Fabbri, R, Gervasi, M, Macculi, C, Monari, J, Musso, C, Nicastro, L, Orfei, A, Peverini, O, Poppi, S, Sbarra, C, Sironi, G, Tascone, R, Tucci, M, Vinyajkin, E, and Zannoni, M

Subjects
SOUTHERN GALACTIC PLANE, FIS/05 - ASTRONOMIA E ASTROFISICA, RESOLUTION, GHZ, COSMOLOGICAL PARAMETERS, RADIO-EMISSION, FOREGROUNDS, MICROWAVE BACKGROUND POLARIZATION, PROJECT
Abstract

We present the Sky Polarization Observatory (SPOrt) Program, aiming at measuring the linear polarization of the microwave sky. The Program includes space experiments (SPOrt-ISS and SPOrt-EXPRESS), Balloon-borne radiometers (BaR-SPOrt) as well as ground-based observations. The project is described by putting special emphasis on the hardware solutions specifically designed to provide high sensitivity polarization measurements.

29. BaR-SPOrt: An experiment to measure the linearly polarized sky emission from both the cosmic microwave background and foregrounds

Author

Cortiglioni, S., Bernardi, G., Carretti, E., Cecchini, S., Macculi, C., Sbarra, C., Ventura, G., Baralis, M., Peverini, O., Tascone, R., Bonometto, S., Colombo, L., Sironi, G., Zannoni, M., Natale, V., Nesti, R., Fabbri, R., Monari, J., Poloni, M., Poppi, S., Nicastro, L., Boscaleri, A., Paolo de Bernardis, Masi, S., Sazhi, M. V., Vinyajkin, E. N., Cortiglioni, S, Bernardi, G, Carretti, E, Cecchini, S, Macculi, C, Sbarra, C, Ventura, G, Baralis, M, Peverini, O, Tascone, R, Bonometto, S, Colombo, L, Sironi, G, Zannoni, M, Natale, V, Nesti, R, Fabbri, R, Monari, J, Poloni, M, Poppi, S, Nicastro, L, Boscaleri, A, de Bernardis, P, Masi, S, Sazhin, M, and Vinyajkin, E

Subjects
FIS/05 - ASTRONOMIA E ASTROFISICA, CMB, polarization, stratospheric balloon, LDB
Abstract

The BaR-SPOrt experiment is aimed at measuring the polarization of the microwave sky at 32 and 90 GHz with sub-degree angular resolution. In this spectral and angular window it is possible to detect the polarization of the cosmic microwave background, which is one of the most ambitious goals of the today astrophysics. The experiment has been designed to fly onboard a Long Duration Balloon to be launched from polar regions, where it is possible to observe low foreground emission sky patches situated at high galactic latitudes.

30. BaR-SPOrt experiment: measuring the CMBP E-mode power spectrum from Dome C

Author

M. Baralis, S. Cecchini, E. Carretti, Massimo Gervasi, M. V. Sazhin, Giuseppe Virone, L. P. L. Colombo, C. Sbarra, Jader Monari, M. De Petris, M. Ramponi, Stefano Cortiglioni, Sergio Poppi, Luciano Casarini, Gianni Bernardi, P. de Bernardis, Silvia Masi, O. A. Peverini, V. Natale, M. Poloni, G. Sironi, Silvio A. Bonometto, R. Fabbri, Renzo Nesti, A. Boscaleri, G. Ventura, R. Tascone, Luciano Nicastro, Claudio Macculi, M. Zannoni, E. N. Vinyajkin, Carretti, E, Cortiglioni, S, Bernardi, G, Casarini, L, Cecchini, S, Macculi, C, Ramponi, M, Sbarra, C, Ventura, G, Monari, J, Poloni, M, Poppi, S, Baralis, M, Peverini, O, Tascone, R, Virone, G, Zannoni, M, Bonometto, S, Colombo, L, Gervasi, M, Sironi, G, Fabbri, R, Natale, V, Nesti, R, Nicastro, L, de Bernardis, P, Masi, S, de Petris, M, Boscaleri, A, Sazhin, M, and Vinyajkin, E

Subjects
Physics, Current configuration, media_common.quotation_subject, Cosmic microwave background, Astrophysics::Instrumentation and Methods for Astrophysics, General Engineering, Spectral density, Astronomy and Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Low frequency, Polarization (waves), Dust emissions, Cosmology, Synchrotron emission, Space and Planetary Science, Sky, Cosmic Microwave Background, POLARIZATION, CMB, COSMOLOGY, Multipole expansion, Astrophysics::Galaxy Astrophysics, media_common
Abstract

The BaR-SPOrt experiment is designed to measure the E -mode power spectrum of the Cosmic Microwave Background Polarization (CMBP) in the multipole range 50 l < 1000. In the current configuration at 32 GHz it can explore up to l = 400. Recent low frequency observations of the target region show that the synchrotron emission should not contamine the CMBP already at 32 GHz. A 6-month observation of a 6° × 6° sky area during the polar night, in ideal environmental conditions, will allow the Italian-French collaboration to both measure the E –mode power spectrum with appropriate sensitivity and perform important tests of the anomalous dust emission. The BaR-SPOrt 32 GHz instrument, now under test and ready for operations by Spring 2005, is proposed for 1–2 years Winter operations at Dome C.

Published
2005

31. BaR-SPOrt: Balloon-Borne Radiometers for Sky Polarization Observations

Author

S. Cecchini, R. Fabbri, Sergio Poppi, S. Bonometto, A. Boscaleri, O. A. Peverini, G. Ventura, Natale, Gianni Bernardi, R. Tascone, E. N. Vinyajkin, Luciano Nicastro, Enzo Pascale, M. Baralis, Claudio Macculi, E. Carretti, G. Boella, M. V. Sazhin, C. Sbarra, Jader Monari, Renzo Nesti, M. De Petris, G. Sironi, Silvia Masi, M. Tucci, R. Di Raffaele, M. Gervasi, M. Zannoni, P. de Bernardis, Stefano Cortiglioni, Sbarra, C, Cortiglioni, S, Bernardi, G, Carretti, E, Cecchini, S, Macculi, C, Ventura, G, Baralis, M, Peverini, O, Tascone, R, Boella, G, Bonometto, S, Gervasi, M, Sironi, G, Tucci, M, Zannoni, M, Natale, V, Nesti, R, Fabbri, R, Monari, J, Poppi, S, Nicastro, L, di Raffaele, R, Boscaleri, A, Pascale, E, de Bernardis, P, de Petris, M, Masi, S, Sazhin, M, and Vinyajkin, E

Subjects
Physics, Radiometer, Astronomy, media_common.quotation_subject, Polarization (waves), Balloon, Cosmology, Astrophysic, FIS/05 - ASTRONOMIA E ASTROFISICA, Sky, Polarization, Cosmic Microwave Background, Remote sensing, media_common
Abstract

BaR-SPOrt, funded by ASI (Italian Space Agency), is a 32 (90) GHz balloon-borne correlation polarimeter for direct measurements of the Q and U Stokes parameters, with an angular resolution of 0.6° (0.2°). Aim of the experiment is the detection of the polarized emission of the diffuse Galactic Background and the Cosmic Microwave Background (CMB). The most likely launch site is Antarctica (2 to 4-week flight). Kiruna (Sweden, 1-week flight) and Svalbard (Norway, > 1-week flight) are possible launch site to observe the Northern sky

Published
2003

32. SPOrt: An experiment aimed at measuring the large scale cosmic microwave background polarization

Author

V.A. Razin, Riccardo Tascone, M. V. Sazhin, M. Tucci, R. Fabbri, C. Sbarra, Mario Zannoni, Silvio A. Bonometto, A. Orfei, Ettore Carretti, Kin-Wang Ng, S. Cecchini, M. Poloni, G. Sironi, Sergio Poppi, M. Baralis, Jader Monari, Oscar Antonio Peverini, Luciano Nicastro, Claudio Macculi, G. Boella, Massimo Gervasi, Giuseppe Virone, Gianni Bernardi, I. A. Strukov, Stefano Cortiglioni, E. N. Vinyajkin, Fineschi S., Carretti, E, Cortiglioni, S, Bernardi, G, Cecchini, S, Macculi, C, Sbarra, C, Monari, J, Orfei, A, Poloni, M, Poppi, S, Boella, G, Bonometto, S, Gervasi, M, Sironi, G, Zannoni, M, Tucci, M, Baralis, M, Peverini, O, Tascone, R, Virone, G, Fabbri, R, Nicastro, L, Ng, K, Razin, V, Vinyajkin, E, Sazhin, M, and Strukov, I

Subjects
DEVICES, media_common.quotation_subject, COSMOLOGICAL PARAMETERS, Cosmic microwave background, Phase (waves), UNIVERSE, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Signal, GRAVITATIONAL-WAVES, FIS/05 - ASTRONOMIA E ASTROFISICA, Optics, Observatory, GHZ, Astrophysics::Galaxy Astrophysics, media_common, Physics, ANISOTROPY, Radiometer, business.industry, Astrophysics (astro-ph), Astrophysics::Instrumentation and Methods for Astrophysics, Polarization (waves), DEGREE ANGULAR SCALES, RESOLUTION, Sky, RADIATION, business, EMISSION, Microwave
Abstract

SPOrt (Sky Polarization Observatory) is a space experiment to be flown on the International Space Station during Early Utilization Phase aimed at measuring the microwave polarized emission with FWHM = 7deg, in the frequency range 22-90 GHz. The Galactic polarized emission can be observed at the lower frequencies and the polarization of Cosmic Microwave Background (CMB) at 90 GHz, where contaminants are expected to be less important. The extremely low level of the CMB Polarization signal (< 1 uK) calls for intrinsically stable radiometers. The SPOrt instrument is expressly devoted to CMB polarization measurements and the whole design has been optimized for minimizing instrumental polarization effects. In this contribution we present the receiver architecture based on correlation techniques, the analysis showing its intrinsic stability and the custom hardware development carried out to detect such a low signal., 9 pages, 5 figures, conference proceeding, to appear in "Polarimetry in Astronomy", SPIE Symposium on 'Astronomical Telescopes and Instrumentation', Waikoloa, August 22-28 2002

Published
2003

33. The SPOrt experiment

Author

Gianni Bernardi, G. Sironi, M. Tucci, S. Cecchini, M. V. Sazhin, V.A. Razin, Kin-Wang Ng, R. Tascone, M. Bruscoli, Luciano Nicastro, O. A. Peverini, Claudio Macculi, R. Fabbri, E. N. Vinyajkin, S. Bonometto, M. Gervasi, I. A. Strukov, Stefano Cortiglioni, Sergio Poppi, Alessandro Orfei, E. Carretti, C. Sbarra, Mario Zannoni, M. Baralis, G. Boella, Jader Monari, Cecchini, S, Cortiglioni, S, Sault, R, Sbarra, C, Carretti, E, Baralis, M, Bernardi, G, Boella, G, Bonometto, S, Bruscoli, M, Fabbri, R, Gervasi, M, Macculi, C, Monari, J, Ng, K, Nicastro, L, Orfei, A, Peverini, O, Poppi, S, Razin, V, Sazhin, M, Sironi, G, Strukov, I, Tascone, R, Tucci, M, Vinyajkin, E, and Zannoni, M

Subjects
Physics, ANISOTROPY, COSMOLOGICAL PARAMETERS, Cosmic microwave background, Astrophysics::Instrumentation and Methods for Astrophysics, Cosmic background radiation, Astronomy, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Polarization (waves), DEGREE ANGULAR SCALES, LIMIT, Galaxy, GRAVITATIONAL-WAVES, FIS/05 - ASTRONOMIA E ASTROFISICA, RESOLUTION, GHZ, MAPS, Microwave range, RADIATION, Space research, MICROWAVE BACKGROUND POLARIZATION, Astrophysics::Galaxy Astrophysics
Abstract

SPOrt is a space experimental aimed at studying the polarization of the CMB and of the diffused Galactic Background in the microwave range (22-90 GHz). Here we present the project as well as its main scientific goals.

Catalog

Books, media, physical & digital resources
See catalog results