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Your search keyword '"Nutter, S."' showing total 9 results
Start Over Author "Nutter, S." Topic astrophysics
9 results on '"Nutter, S."'

1. Measurements of cosmic-ray secondary nuclei at high energies with the first flight of the CREAM balloon-borne experiment

Author

Ahn, H. S., Allison, P. S., Bagliesi, M. G., Beatty, J. J., Bigongiari, G., Boyle, P. J., Brandt, T. J., Childers, J. T., Conklin, N. B., Coutu, S., Duvernois, M. A., Ganel, O., Han, J. H., Hyun, H. J., Jeon, J. A., Kim, K. C., Lee, J. K., Lee, M. H., Lutz, L., Maestro, P., Malinin, A., Marrocchesi, P. S., Minnick, S. A., Mognet, S. I., Nam, S., Nutter, S. L., Park, I. H., Park, N. H., Seo, E. S., Sina, R., Swordy, S. P., Wakely, S. P., Wu, J., Yang, J., Yoon, Y. S., Zei, R., and Zinn, S. Y.

Subjects
Astrophysics
Abstract

We present new measurements of heavy cosmic-ray nuclei at high energies per- formed during the first flight of the balloon-borne cosmic-ray experiment CREAM (Cosmic-Ray Energetics And Mass). This instrument uses multiple charge detectors and a transition radiation detector to provide the first high accuracy measurements of the relative abundances of elements from boron to oxygen up to energies around 1 TeV/n. The data agree with previous measurements at lower energies and show a relatively steep decline (~E$^-0.6$ to E$^-0.5$) at high energies. They further show the source abundance of nitrogen relative to oxygen is ~10% in the TeV/n region., Comment: Accepted for publication in Astroparticle Physics

Published
2008
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2. New Measurement of the Cosmic-Ray Positron Fraction from 5 to 15 GeV

Author

Beatty, J. J., Bhattacharyya, A., Bower, C., Coutu, S., DuVernois, M. A., McKee, S., Minnick, S. A., Muller, D., Musser, J., Nutter, S., Labrador, A. W., Schubnell, M., Swordy, S., Tarle, G., and Tomasch, A.

Subjects
Astrophysics
Abstract

We present a new measurement of the cosmic-ray positron fraction at energies between 5 and 15 GeV with the balloon-borne HEAT-pbar instrument in the spring of 2000. The data presented here are compatible with our previous measurements, obtained with a different instrument. The combined data from the three HEAT flights indicate a small positron flux of non-standard origin above 5 GeV. We compare the new measurement with earlier data obtained with the HEAT-e+- instrument, during the opposite epoch of the solar cycle, and conclude that our measurements do not support predictions of charge sign dependent solar modulation of the positron abundance at 5 GeV., Comment: accepted for publication in PRL

Published
2004
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3. A new measurement of the altitude dependence of the atmospheric muon intensity

Author

Beatty, J. J., Coutu, S., Minnick, S. A., Bhattacharyya, A., Bower, C. R., Musser, J. A., McKee, S. P., Schubnell, M., Tarle, G., Tomasch, A. D., Labrador, A. W., Muller, D., Swordy, S. P., DuVernois, M. A., and Nutter, S. L.

Subjects
Astrophysics
Abstract

We present a new measurement of atmospheric muons made during an ascent of the High Energy Antimatter Telescope balloon experiment. The muon charge ratio mu+/mu- as a function of atmospheric depth in the momentum interval 0.3-0.9 GeV/c is presented. The differential mu- intensities in the 0.3-50 GeV/c range and for atmospheric depths between 4-960 g/cm^2 are also presented. We compare these results with other measurements and model predictions. We find that our charge ratio is ~1.1 for all atmospheric depths and is consistent, within errors, with other measurements and the model predictions. We find that our measured mu- intensities are also consistent with other measurements, and with the model predictions, except at shallow atmospheric depths., Comment: To appear in Physical Review D

Published
2004
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4. Measurement of the Cosmic-Ray Antiproton to Proton Abundance Ratio between 4 and 50 GeV

Author

Beach, A. S., Beatty, J. J., Bhattacharyya, A., Bower, C., Coutu, S., DuVernois, M. A., Labrador, A. W., McKee, S., Minnick, S. A., Muller, D., Musser, J., Nutter, S., Schubnell, M., Swordy, S., Tarle, G., and Tomasch, A.

Subjects
Astrophysics
Abstract

We present a new measurement of the antiproton to proton abundance ratio, pbar/p, in the cosmic radiation. The HEAT-pbar instrument, a balloon borne magnet spectrometer with precise rigidity and multiple energy loss measurement capability, was flown successfully in Spring 2000, at an average atmospheric depth of 7.2 g/cm^2. A total of 71 antiprotons were identified above the vertical geomagnetic cut-off rigidity of 4.2 GV. The highest measured proton energy was 81 GeV. We find that the pbar/p abundance ratio agrees with that expected from a purely secondary origin of antiprotons produced by primary protons with a standard soft energy spectrum., Comment: 4 pages, 3 figures; accepted for publication in PRL

Published
2001
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5. The Energy Spectra and Relative Abundances of Electrons and Positrons in the Galactic Cosmic Radiation

Author

Barwick, S. W., Beatty, J. J., Bower, C. R., Chaput, C. J., Coutu, S., de Nolfo, G. A., DuVernois, M. A., Ellithorpe, D., Ficenec, D., Knapp, J., Lowder, D. M., McKee, S., Muller, D., Musser, J. A., Nutter, S. L., Schneider, E., Swordy, S. P., Tarle, G., Tomasch, A. D., and Torbet, E.

Subjects
Astrophysics
Abstract

Observations of cosmic-ray electrons and positrons have been made with a new balloon-borne detector, HEAT (the "High-Energy Antimatter Telescope"), first flown in 1994 May from Fort Sumner, NM. We describe the instrumental approach and the data analysis procedures, and we present results from this flight. The measurement has provided a new determination of the individual energy spectra of electrons and positrons from 5 GeV to about 50 GeV, and of the combined "all-electron" intensity (e+ + e-) up to about 100 GeV. The single power-law spectral indices for electrons and positrons are alpha = 3.09 +/- 0.08 and 3.3 +/- 0.2, respectively. We find that a contribution from primary sources to the positron intensity in this energy region, if it exists, must be quite small., Comment: latex2e file, 30 pages, 15 figures, aas2pp4.sty and epsf.tex needed. To appear in May 10, 1998 issue of Ap. J

Published
1997
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6. Measurements of the Cosmic-Ray Positron Fraction From 1 to 50 GeV

Author

HEAT Collaboration, Barwick, S. W., Schneider, E., Beatty, J. J., de Nolfo, G. A., Bhattacharyya, A., Bower, C. R., Musser, J. A., Chaput, C. J., Coutu, S., McKee, S., Tarle, G., Tomasch, A. D., Knapp, J., Lowder, D. M., Muller, D., Swordy, S. P., Torbet, E., and Nutter, S. L.

Subjects
Astrophysics
Abstract

Two measurements of the cosmic-ray positron fraction as a function of energy have been made using the High Energy Antimatter Telescope (HEAT) balloon-borne instrument. The first flight took place from Ft. Sumner, New Mexico in 1994, and yielded results above the geomagnetic cutoff energy of 4.5 GeV. The second flight from Lynn Lake, Manitoba in 1995 permitted measurements over a larger energy interval, from 1 GeV to 50 GeV. In this letter we present results on the positron fraction based on data from the Lynn Lake flight, and compare these with the previously published results from the Ft. Sumner flight. The results confirm that the positron fraction does not increase with energy above ~10 GeV, although a small excess above purely secondary production cannot be ruled out. At low energies the positron fraction is slightly larger than that reported from measurements made in the 1960's. This effect could possibly be a consequence of charge dependence in the level of solar modulation., Comment: 7 pages, LaTeX, two eps figures, aas2pp4.sty and epsf.tex needed, accepted by Ap.J. Lett. (March 27, 1997)

Published
1997
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7. Gated-Dynode Photomultiplier Tube Assembly for the Boronated Scintillator Detector of the ISS-CREAM Experiment

Author

Anderson, T, Chen, Y, Coutu, S, Im, S, LaBree, T, Link, Jason T, Mitchell, John W, Mognet, S, Nutter, S, Wallace, K, Yin, Z, and Yu, M

Subjects
Astrophysics
Abstract

We present the design of a four-photomultiplier tube (PMT) assembly for measuring light generation in theBoronated Scintillator Detector (BSD) of the Cosmic Ray Energetics And Mass experiment for the InternationalSpace Station (ISS-CREAM). The light produced in the scintillator includes a contribution from the captureof thermalized neutrons produced in cosmic ray interactions, as well as delayed fluorescence, in the range ofseveral microseconds following the incident cosmic ray impact. The BSD is held in an insensitive state until acosmic-ray trigger causes a rapid turn on of the PMTs to detect late light signals, several microseconds afterthe trigger. The design includes two pulsed high-voltage supplies, which serve to gate the first two dynodesof the Hamamatsu R1924A PMTs used in the assembly. When the dynode gates are held in the "off" state,this scheme is shown to suppress >105 photons from injection into the tube's multiplier stage, while beingcapable of rapid switching into a stable operating mode in less than 1 s. This mitigates any backgroundsfrom afterpulsing that might otherwise be present in the PMT response following the cosmic ray incidence.

Published
2019
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8. Study of the primary cosmic ray composition around the knee of the energy spectrum

Author

C. W. Peck, G. Giannini, M. Goretti, F. Guarino, G. Liu, R. Baker, A. Marzari Chiesa, A. Corona, N. Giglietto, L. Patrizii, V. Valente, O. Erriquez, M. Severi, Fabrizio Cei, G. Mandrioli, Vincenzo Patera, M. Aglietta, M. Spinetti, J. L. Stone, B. Pavesi, M. Mittelbrun, V. Bisi, C. DeMarzo, C. R. Bower, L. Satta, A. Sciubba, G.C. Trinchero, M. Ambrosio, D. Martello, O. Palamara, Pietro Antonioli, C. Melagrana, C. Bloise, Erik Katsavounidis, B. C. Barish, P. Fusco, P. Serra Lugaresi, M. E. Bertaina, J. A. Musser, D. Ficenec, C. W. Walter, Steven Ahlen, E. Kearns, H. Dekhissi, S. L. Mufson, A. Margiotta-Neri, G. Ludlam, Andrea Carlo Marini, F. Sartogo, M. Iacovacci, P. Pistilli, D. Campana, J. Petrakis, S. Klein, D. G. Michael, P. Bernardini, S. L. Nutter, A. Rainò, C. Morello, G. Cini, M. N. Mazziotta, C. E. Lane, Giuseppe Osteria, A. Sanzgiri, F. Cafagna, G. Mancarella, C. Bemporad, R. Pazzi, J. Reynoldson, Teresa Montaruli, S. Parlati, M. De Mitri, A. Marin, A. Di Credico, Robert A. Cormack, Lawrence Sulak, Kate Scholberg, Paolo Lipari, S. Kyriazopoulou, M. Carboni, A. Campos Fauth, Marco Grassi, Marco Monteno, O. Saavedra, R. Liu, R. C. Webb, C. Okada, Bruno Alessandro, R. Steinberg, Kael Hanson, Maurizio Spurio, A. Surdo, S. Vernetto, L. Bergamasco, G. Battistoni, Edward Diehl, G.L. Sanzani, E. Iarocci, P. Green, R. Nolty, P. Guarnaccia, C. Satriano, S. Cecchini, P. Vallania, P.L. Ghia, Alec Habig, M. Calicchio, Roberto Bellotti, R.M. Heinz, S. Petrera, Halina Bilokon, G. Navarra, G. Mannocchi, G. Di Sciascio, Donato Nicolo, L. Miller, D. Levin, Severino Angelo Maria Bussino, Y. Lu, W. Fulgione, N. D. Pignatano, E. Lamanna, B. D'Ettorre Piazzoli, J. Steele, M. J. Longo, Carlotta Castagnoli, A. Baldini, P. Spinelli, F. Arneodo, G. C. Barbarino, R. Antolini, A. Chiavassa, Eugenio Scapparone, L. Riccati, J. T. Hong, M. De Vincenzi, V. Togo, G. Auriemma, Gregory Tarle, P. Matteuzzi, G. DeCataldo, Mario Sitta, C. Gustavino, A. Castellina, C. Favuzzi, A. A. Grillo, C. Cattadori, V. Chiarella, P. Monacelli, P. Galeotti, S. Coutu, W. A. Worstell, C. Forti, G. Giacomelli, S P Mikheyev, F.J. Ronga, Aglietta, M, Alessandro, B, Antonioli, P, Arneodo, F, Bergamasco, L, Bertaina, M, Fauth, Ac, Castagnoli, C, Castellina, A, Cattadori, C, Chiavassa, A, Cini, G, Piazzoli, Bd, Disciascio, G, Fulgione, W, Galeotti, P, Ghia, Pl, Iacovacci, M, Mannocchi, G, Melagrana, C, Morello, C, Navarra, G, Riccati, L, Saavedra, O, Trinchero, Gc, Vallania, P, Vernetto, S, Ahlen, S, Ambrosio, M, Antolini, R, Auriemma, G, Baker, R, Baldini, A, Barbarino, Gc, Barish, Bc, Battistoni, G, Bellotti, R, Bemporad, C, Bernardini, P, Bilokon, H, Bisi, V, Bloise, C, Bower, C, Bussino, Severino Angelo Maria, Cafagna, F, Calicchio, M, Campana, D, Carboni, M, Cecchini, S, Cei, F, Chiarella, V, Cormack, R, Corona, A, Coutu, S, Decataldo, G, Dekhissi, H, Demarzo, C, Demitri, L, Devincenzi, M, Dicredico, A, Diehl, E, Erriquez, O, Favuzzi, C, Ficenec, D, Forti, C, Fusco, P, Giacomelli, G, Giannini, G, Giglietto, N, Goretti, M, Grassi, M, Green, P, Grillo, A, Guarino, F, Guarnaccia, P, Gustavino, C, Habig, A, Hanson, K, Heinz, R, Hong, Jt, Iarocci, E, Katsavounidis, E, Kearns, E, Klein, S, Kyriazopoulou, S, Lamanna, E, Lane, C, Levin, D, Lipari, P, Liu, G, Liu, R, Longo, Mj, Lu, Y, Ludlam, G, Mancarella, G, Mandrioli, G, Margiottaneri, A, Marin, A, Marini, A, Martello, D, Chiesa, Am, Matteuzzi, P, Mazziotta, Mn, Michael, Dg, Mikheyev, S, Miller, L, Mittelbrun, M, Monacelli, P, Montaruli, T, Monteno, M, Mufson, S, Musser, J, Nicolo, D, Nolty, R, Nutter, S, Okada, C, Osteria, G, Palamara, O, Parlati, S, Patera, V, Patrizii, L, Pavesi, B, Pazzi, R, Peck, Cw, Petrakis, J, Petrera, S, Pignatano, Nd, Pistilli, P, Raino, A, Reynoldson, J, Ronga, F, Sanzani, G, Sanzgiri, A, Sartogo, F, Satriano, C, Satta, L, Scapparone, E, Scholberg, K, Sciubba, A, Lugaresi, P, Severi, M, Sitta, M, Spinelli, P, Spinetti, M, Spurio, M, Steele, J, Steinberg, R, Stone, Jl, Sulak, Lr, Surdo, A, Tarle, G, Togo, V, Valente, V, Walter, Cw, Webb, R, Worstell, W., M., Aglietta, B., Alessandro, P., Antonioli, F., Arneodo, L., Bergamasco, M., Bertaina, A., Campos Fauth, C., Castagnoli, A., Castellina, C., Cattadori, A., Chiavassa, G., Cini, B., D'Ettorre Piazzoli, G., Di Sciascio, W., Fulgione, P., Galeotti, P. L., Ghia, M., Iacovacci, G., Mannocchi, C., Melagrana, C., Morello, G., Navarra, L., Riccati, O., Saavedra, G. C., Trinchero, P., Vallania, S., Vernetto, S., Ahlen, M., Ambrosio, R., Antolini, G., Auriemma, R., Baker, A., Baldini, G. C., Barbarino, B. C., Barish, G., Battistoni, R., Bellotti, C., Bemporad, P., Bernardini, H., Bilokon, V., Bisi, C., Bloise, C., Bower, S., Bussino, F., Cafagna, M., Calicchio, D., Campana, M., Carboni, S., Cecchini, F., Cei, V., Chiarella, R., Cormack, A., Corona, S., Coutu, G., Decataldo, H., Dekhissi, C., Demarzo, M., De Mitri, M., De Vincenzi, A., Di Credico, E., Diehl, O., Erriquez, C., Favuzzi, D., Ficenec, C., Forti, P., Fusco, G., Giacomelli, G., Giannini, N., Giglietto, M., Goretti, M., Grassi, P., Green, A., Grillo, F., Guarino, P., Guarnaccia, C., Gustavino, A., Habig, K., Hanson, R., Heinz, J. T., Hong, E., Iarocci, E., Katsavounidi, E., Kearn, S., Klein, S., Kyriazopoulou, E., Lamanna, C., Lane, D. S., Levin, P., Lipari, G., Liu, R., Liu, M. J., Longo, Y., Lu, G., Ludlam, Mancarella, Giovanni, G., Mandrioli, A., Margiotta Neri, A., Marin, A., Marini, Martello, Daniele, A., Marzari Chiesa, P., Matteuzzi, M. N., Mazziotta, D. G., Michael, S., Mikheyev, L., Miller, M., Mittelbrun, P., Monacelli, T., Montaruli, M., Monteno, S., Mufson, J., Musser, D., Nicoló, R., Nolty, S., Nutter, C., Okada, G., Osteria, O., Palamara, S., Parlati, V., Patera, L., Patrizii, B., Pavesi, R., Pazzi, C. W., Peck, J., Petraki, S., Petrera, N. D., Pignatano, P., Pistilli, A., Rainó, J., Reynoldson, F., Ronga, G., Sanzani, A., Sanzgiri, F., Sartogo, C., Satriano, L., Satta, E., Scapparone, K., Scholberg, A., Sciubba, P., Serra Lugaresi, M., Severi, M., Sitta, P., Spinelli, M., Spinetti, M., Spurio, J., Steele, R., Steinberg, J. L., Stone, L. R., Sulak, A., Surdo, G., Tarlé, V., Togo, V., Valente, C. W., Walter, R., Webb, W., Worstell, A. C., Fauth, D'ETTORRE PIAZZOLI, Benedetto, G., Disciascio, Iacovacci, Michele, Barbarino, Giancarlo, L., Demitri, M., Devincenzi, A., Dicredico, Guarino, Fausto, G., Mancarella, A., Margiottaneri, D., Martello, A. M., Chiesa, D., Nicolo, A., Raino, P. S., Lugaresi, G., Tarle, Aglietta M., Alessandro B., Antonioli P., Arneodo F., Bergamasco L., Bertaina M., Fauth A.C., Castagnoli C., Castellina A., Cattadori C., Chiavassa A., Cini G., D'Ettorre Piazzoli B., Di Sciascio G., Fulgione W., Galeotti P., Ghia P.L., Iacovacci M., Mannocchi G., Melagrana C., Morello C., Navarra G., Riccati L., Saavedra O., Trinchero G.C., Vallania P., Vernetto S., Ahlen S., Ambrosio M., Antolini R., Auriemma G., Baker R., Baldini A., Barbarino G.C., Barish B.C., Battistoni G., Bellotti R., Bemporad C., Bernardini P., Bilokon H., Bisi V., Bloise C., Bower C., Bussino S., Cafagna F., Calicchio M., Campana D., Carboni M., Cecchini S., Cei F., Chiarella V., Cormack R., Corona A., Coutu S., DeCataldo G., Dekhissi H., DeMarzo C., De Mitri M., De Vincenzi M., Di Credico A., Diehl E., Erriquez O., Favuzzi C., Ficenec D., Forti C., Fusco P., Giacomelli G., Giannini G., Giglietto N., Goretti M., Grassi M., Green P., Grillo A., Guarino F., Guarnaccia P., Gustavino C., Habig A., Hanson K., Heinz R., Hong J.T., Iarocci E., Katsavounidis E., Kearns E., Klein S., Kyriazopoulou S., Lamanna E., Lane C., Levin D.S., Lipari P., Liu G., Liu R., Longo M.J., Lu Y., Ludlam G., Mancarella G., Mandrioli G., Margiotta-Neri A., Marin A., Marini A., Martello D., Chiesa A.M., Matteuzzi P., Mazziotta M.N., Michael D.G., Mikheyev S., Miller L., Mittelbrun M., Monacelli P., Montaruli T., Monteno M., Mufson S., Musser J., Nicolo D., Nolty R., Nutter S., Okada C., Osteria G., Palamara O., Parlati S., Patera V., Patrizii L., Pavesi B., Pazzi R., Peck C.W., Petrakis J., Petrera S., Pignatano N.D., Pistilli P., Raino A., Reynoldson J., Ronga F., Sanzani G., Sanzgiri A., Sartogo F., Satriano C., Satta L., Scapparone E., Scholberg K., Sciubba A., Lugaresi P.S., Severi M., Sitta M., Spinelli P., Spinetti M., Spurio M., Steele J., Steinberg R., Stone J.L., Sulak L.R., Surdo A., Tarle G., Togo V., Valente V., Walter C.W., Webb R., and Worstell W.

Subjects
Nuclear and High Energy Physics, Proton, EAS-TOP, Astrophysics::High Energy Astrophysical Phenomena, Other Fields of Physics, chemistry.chemical_element, Cosmic ray, MACRO, Astrophysics, CASCADES, Coincidence, Spectral line, DEEP-UNDERGROUND MUONS, Nuclear physics, Primary (astronomy), Nuclear Experiment, Helium, Physics, Range (particle radiation), Muon, GRAN-SASSO, MACRO DETECTOR, Astrophysics::Instrumentation and Methods for Astrophysics, Gran Sasso, chemistry, High Energy Physics::Experiment
Abstract

A study of the primary cosmic ray composition in the energy range 5ṡ1014−5ṡ1015 eV is performed through the analysis of the deep underground muons and of the e.m. component of Extensive Air Showers detected in coincidence by the MACRO and EAS-TOP experiments at the Gran Sasso Laboratory. We conclude that: a) pure proton and Iron primary beams are excluded by the experimental data; b) a fraction of nuclei heavier than Helium is necessary to explain the experimental data both below and above the knee; c) a mixed composition, obtained a priori from extrapolations of the spectra directly measured below 100 TeV, yields a reasonable account of the observations up to the knee of the primary spectrum.

Published
1994

9. SEARCH FOR STELLAR GRAVITATIONAL COLLAPSE BY MACRO - CHARACTERISTICS AND RESULTS

Author

J. L. Stone, L. Satta, C. Smith, M. Calicchio, F.J. Ronga, L. Patrizii, Halina Bilokon, F. Cafagna, Marco Monteno, G. Tarle, G. Mandrioli, C. De Marzo, Marco Grassi, J. A. Musser, A. Di Credico, C. W. Walter, S. Kyriazopoulou, F. Predieri, Edward Diehl, D. G. Michael, G. de Cataldo, R. C. Webb, G. Osteria, V. Bisi, A. Corona, P. Bernardini, S. P. Ahlen, J. Reynoldson, J. T. Hong, Paolo Giubellino, R.M. Heinz, E. Iarocci, Severino Angelo Maria Bussino, R. Steinberg, M. Severi, P. Chrysicopoulou, Ana Maria Marin, M. De Vincenzi, C. E. Lane, A. A. Grillo, S. Petrera, M. Masera, O. Erriquez, Maurizio Longo, F. Guarino, G. Auriemma, C. Bloise, Roberto Bellotti, G. Liu, P. Spinelli, P. Fusco, D. Martello, S. Coutu, Mario Sitta, C. Gustavino, S. L. Mufson, A. Margiotta-Neri, Robert A. Cormack, M. Spinetti, E. Katsuvounidis, Paolo Lipari, Lawrence Sulak, Andrea Carlo Marini, Paul J. Green, V. Valenti, Gianfranca De Rosa, S. L. Nutter, P. Serra Lugaresi, C. Bemporad, R. Antolini, P. Cavallo, G. Giannini, C. Chiera, J. Steele, C. W. Peck, Vincenzo Patera, Fabrizio Cei, G. Ludlam, C. Favuzzi, V. Chiarella, S. R. Klein, Barry C. Barish, A. Sciubba, N. Giglietto, O. Palamara, B. B. Bam, P. Pistilli, P. Monacelli, J. Petrakis, R. Pazzi, Maurizio Spurio, A. Surdo, G. C. Barbarino, G. Battistoni, A. Marzari Chiesa, Eugenio Scapparone, G. Mancarella, Kate Scholberg, R. Liu, W. A. Worstell, S. Parlati, C. Forti, G. Giacomelli, P. Campana, E. Lamanna, C. Okada, E. Kearns, Luciano Ramello, V. Togo, P. Matteuzzi, S. Cecchini, Alec Habig, L. Miller, D. Levin, N. D. Pignatano, A. Baldini, L. Foti, M. Ambrosio, G. Martellotti, Barbarino, Giancarlo, Guarino, Fausto, The MACRO, Collaboration, Bellotti, R, Cafagna, F, Calicchio, M, Decataldo, G, Demarzo, C, Erriquez, O, Favuzzi, C, Fusco, P, Giglietto, N, Spinelli, P, Petrakis, J, Antolini, R, Bam, Bb, Cecchini, S, Giacomelli, G, Mandrioli, G, Margiottaneri, A, Matteuzzi, P, Patrizii, L, Predieri, F, Scapparone, E, Lugaresi, P, Spurio, M, Togo, V, Ahlen, S, Cormack, R, Kearns, E, Klein, S, Ludlam, G, Marin, A, Okada, C, Stone, J, Sulak, L, Worstell, W, Barish, B, Coutu, S, Hong, J, Katsuvounidis, E, Kyriazopoulou, S, Liu, G, Liu, R, Michael, D, Peck, C, Pignatano, N, Scholberg, K, Steele, J, Walter, C, Lane, C, Steinberg, R, Battistoni, G, Bilokon, H, Bloise, C, Campana, P, Cavallo, P, Chiarella, V, Forti, C, Grillo, A, Iarocci, E, Marini, A, Patera, V, Ronga, F, Satta, L, Spinetti, M, Valente, V, Gustavino, C, Reynoldson, J, Habig, A, Heinz, R, Miller, L, Mufson, S, Musser, J, Nutter, S, Dicredico, A, Monacelli, P, Bernardini, P, Mancarella, G, Martello, D, Palamara, O, Petrera, S, Pistilli, P, Surdo, A, Diehl, E, Levin, D, Longo, M, Smith, C, Tarle, G, Ambrosio, M, Barbarino, Gc, Guarino, F, Osteria, G, Baldini, A, Bemporad, C, Cei, F, Giannini, G, Grassi, M, Pazzi, R, Auriemma, G, Bussino, Severino Angelo Maria, Chiera, C, Chrysicopoulou, P, Corona, A, Devincenzi, M, Foti, L, Lamanna, E, Lipari, P, Martellotti, G, Rosa, G, Sciubba, A, Severi, M, Green, P, Webb, R, Bisi, V, Giubellino, P, Chiesa, Am, Masera, M, Monteno, M, Parlati, S, Ramello, L, and Sitta, M.

Subjects
Physics, Nuclear and High Energy Physics, Photon, Physics::Instrumentation and Detectors, Astronomy, Cosmic ray, Astrophysics, Atomic and Molecular Physics, and Optics, Massless particle, General Relativity and Quantum Cosmology, Neutrino detector, Gravitational collapse, Astrophysics::Solar and Stellar Astrophysics, Macro, Neutrino, Supermodule, Nuclear Experiment, Astrophysics::Galaxy Astrophysics
Abstract

The first MACRO lower supermodule has been sensitive to antineutrinos from stellar gravitational collapse since spring 1989. The results with the 44 tonnes of liquid scintillator which have been instrumented to search for stellar gravitational collapse are discussed here.

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