Search for the sidereal and solar diurnal modulations in the total MACRO muon data set -: art. no. 042002

被引：62

作者：

Ambrosio, M ^{[1
]}

Antolini, R

Baldini, A

Barbarino, GC

Barish, BC

Battistoni, G

Becherini, Y

Bellotti, R

Bemporad, C

Bernardini, P

Bilokon, H

Bower, C

Brigida, M

Bussino, S

Cafagna, F

Calicchio, M

Campana, D

Carboni, M

Caruso, R

Cecchini, S

Cei, F

Chiarella, V

Chiarusi, T

Choudhary, BC

Coutu, S

Cozzi, M

De Cataldo, G

Dekhissi, H

De Marzo, C

De Mitri, I

Derkaoui, J

De Vincenzi, M

Di Credico, A

Erriquez, O

Favuzzi, C

Forti, C

Fusco, P

Giacomelli, G

Giannini, G

Giglietto, N

Giorgini, M

Grassi, M

Grillo, A

Gustavino, C

Habig, A

Hanson, K

Heinz, R

Katsavounidis, E

Katsavounidis, I

Kearns, E

机构：

[1] Univ Naples, Dipartimento Fis, I-80125 Naples, Italy

[2] Ist Nazl Fis Nucl, I-80125 Naples, Italy

[3] Univ Bari, Dipartmento Fis, I-70126 Bari, Italy

[4] Ist Nazl Fis Nucl, I-70126 Bari, Italy

[5] Ist Nazl Fis Nucl, I-40126 Bologna, Italy

[6] Univ Bologna, Dipartmento Fis, I-40126 Bologna, Italy

[7] Boston Univ, Dept Phys, Boston, MA 02215 USA

[8] CALTECH, Pasadena, CA 91125 USA

[9] Drexel Univ, Dept Phys, Philadelphia, PA 19104 USA

[10] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Roma, Italy

[11] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, I-67010 Coppito, LAquila, Italy

[12] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA

[13] Indiana Univ, Dept Astron, Bloomington, IN 47405 USA

[14] Univ Aquila, Dipartimento Fis, I-67100 Laquila, Italy

[15] Ist Nazl Fis Nucl, I-67100 Laquila, Italy

[16] Univ Lecce, Dipartimento Fis, I-73100 Lecce, Italy

[17] Ist Nazl Fis Nucl, I-73100 Lecce, Italy

[18] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA

[19] Univ Pisa, Dipartimento Fis, I-56010 Pisa, Italy

[20] Ist Nazl Fis Nucl, I-56010 Pisa, Italy

[21] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

[22] Ist Nazl Fis Nucl, I-00185 Rome, Italy

[23] Texas A&M Univ, Dept Phys, College Stn, TX 77843 USA

[24] Univ Turin, Dipartimento Fis Sperimentale, I-10125 Turin, Italy

[25] Ist Nazl Fis Nucl, I-10125 Turin, Italy

[26] Univ Mohamed I, Fac Sci, LPTP, Oujda, Morocco

[27] Univ Roma Tre, Dipartimento Fis, I-00146 Rome, Italy

[28] Ist Nazl Fis Nucl, Sez Roma, I-00146 Rome, Italy

[29] Ist Nazl Fis Nucl, I-20133 Milan, Italy

[30] CNR, Ist TESRE, I-40129 Bologna, Italy

[31] Penn State Univ, Dept Phys, University Pk, PA 16801 USA

[32] Univ Trieste, I-34100 Trieste, Italy

[33] Ist Nazl Fis Nucl, I-34100 Trieste, Italy

[34] Univ Minnesota, Dept Phys, Duluth, MN 55812 USA

[35] MIT, Dept Phys, Cambridge, MA 02139 USA

[36] Intervideo Inc, Torrance, CA 90505 USA

[37] Univ Calabria, Dipartimento Fis, Arcavacata Di Rende, Cosenza, Italy

[38] Macalester Coll, Dept Phys, St Paul, MN 55105 USA

[39] Macalester Coll, Dept Astr, St Paul, MN 55105 USA

[40] James Madison Univ, Dept Phys, Harrisonburg, VA 22807 USA

[41] Inst Space Sci, R-76900 Bucharest, Romania

[42] Univ Basilicata, I-85100 Potenza, Italy

[43] Univ Piemonte Orientale, Dipartimento Sci & Tecnol Avanzate, Alessandria, Italy

[44] Resonance Photon, Markham, ON, Canada

来源：

PHYSICAL REVIEW D | 2003年 / 67卷 / 04期

关键词：

D O I：

10.1103/PhysRevD.67.042002

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have analyzed 44.3M single muons collected by MACRO from 1991 through 2000 in 2145 live days of operation. We have searched for the solar diurnal, apparent sidereal, and pseudosidereal modulation of the underground muon rate by computing hourly deviations of the muon rate from 6 month averages. We find evidence for statistically significant modulations with the solar diurnal and the sidereal periods. The amplitudes of these modulations are <0.1%, and are at the limit of the detector statistics. The pseudosidereal modulation is not statistically significant. The solar diurnal modulation is due to the daily atmospheric temperature variations at 20 km, the altitude of primary cosmic ray interactions with the atmosphere; MACRO is the deepest experiment to report this result. The sidereal modulation is in addition to the expected Compton-Getting modulation due to solar system motion relative to the local standard of rest; it represents motion of the solar system with respect to the galactic cosmic rays toward the galactic plane.

引用

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