Effective non-vertical and apparent cutoff rigidities for a cosmic ray latitude survey from Antarctica to Italy in minimum of solar activity
In this paper we will report the results of the computation of cutoff rigidities of vertical and non-vertical incident cosmic ray particles. Non-vertical effective cutoff rigidities have been computed by tracing particle trajectories through the ‘‘real’’ geomagnetic magnetic field comprising the Int...
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ftunivroma3iris:oai:iris.uniroma3.it:11590/140670 2024-02-27T08:35:17+00:00 Effective non-vertical and apparent cutoff rigidities for a cosmic ray latitude survey from Antarctica to Italy in minimum of solar activity L. I. DORMAN O. A. DANILOVA N. IUCCI PARISI, Mario N. G. PTITSYNA M. I. TYASTO G. VILLORESI L. I., Dorman O. A., Danilova N., Iucci Parisi, Mario N. G., Ptitsyna M. I., Tyasto G., Villoresi 2008 ELETTRONICO http://hdl.handle.net/11590/140670 https://doi.org/10.1016/j.asr.2007.04.032 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000257684300017 volume:42 firstpage:510 lastpage:516 numberofpages:7 journal:ADVANCES IN SPACE RESEARCH http://hdl.handle.net/11590/140670 doi:10.1016/j.asr.2007.04.032 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-44849128325 Cosmic ray Cutoff rigidity Particle arrival Geomagnetic field model info:eu-repo/semantics/article 2008 ftunivroma3iris https://doi.org/10.1016/j.asr.2007.04.032 2024-01-31T17:40:43Z In this paper we will report the results of the computation of cutoff rigidities of vertical and non-vertical incident cosmic ray particles. Non-vertical effective cutoff rigidities have been computed by tracing particle trajectories through the ‘‘real’’ geomagnetic magnetic field comprising the International Geomagnetic Reference Field model (IGRF95, IAGA Division 5 Working Group 8, 1996: Sabaka, T.J., Langel, R.A., Baldwin, R.T., Conrad, J.A. The geomagnetic field, 1900–1995, including the large scale fields from magnetospheric sources and NASA candidate models for the 1995 IGRF revision. J. Geomag. Geoelect. 49, 157–206, 1997.) and the Tsyganenko [Tsyganenko, N.A. A magnetospheric magnetic field model with a warped tail current sheet. Planet. Space Sci. 37, 5–20, 1989.] magnetosphere model. The computation have been done for the backward route (from Antarctica to Italy) of the Italian Antarctic ship survey 1996–1997, for geographic points corresponding to the daily average coordinates of the ship; for zenith angles 15°, 30°, 45° and 60°, and azimuth angles from 0° to 360° in steps of 45°. By means of the obtained non-vertical cutoffs the apparent cutoff rigidities have been calculated. The information on integral multiplicities of secondary neutrons detected by the neutron monitor in dependence of the zenith angle of incoming primary cosmic ray particles have also been used. This information is based on the theoretical calculations of meson-nuclear cascades of primary protons with different rigidities arriving to the Earth’s atmosphere at the zenith angles of 0°, 15°, 30°, 45°, 60° and 75°. The difference between the computed apparent and vertical cutoff rigidities reaches ~1 GV at rigidities >7–8 GV. At rigidities of 10–16 GV, the difference between the apparent and vertical cutoff rigidities is larger than that obtained earlier by Clem et al. [Clem, J.M., Bieber, J.W., Duldig, M., Evenson, P., Hall, D., Humble, J.E. Contribution of obliquely incident particles to neutron monitor counting rate. J. ... Article in Journal/Newspaper Antarc* Antarctic Antarctica Anagrafe della Ricerca d'Ateneo (Universitá degli studi Roma Tre) Antarctic Baldwin ENVELOPE(163.300,163.300,-72.250,-72.250) Advances in Space Research 42 3 510 516 |
institution |
Open Polar |
collection |
Anagrafe della Ricerca d'Ateneo (Universitá degli studi Roma Tre) |
op_collection_id |
ftunivroma3iris |
language |
English |
topic |
Cosmic ray Cutoff rigidity Particle arrival Geomagnetic field model |
spellingShingle |
Cosmic ray Cutoff rigidity Particle arrival Geomagnetic field model L. I. DORMAN O. A. DANILOVA N. IUCCI PARISI, Mario N. G. PTITSYNA M. I. TYASTO G. VILLORESI Effective non-vertical and apparent cutoff rigidities for a cosmic ray latitude survey from Antarctica to Italy in minimum of solar activity |
topic_facet |
Cosmic ray Cutoff rigidity Particle arrival Geomagnetic field model |
description |
In this paper we will report the results of the computation of cutoff rigidities of vertical and non-vertical incident cosmic ray particles. Non-vertical effective cutoff rigidities have been computed by tracing particle trajectories through the ‘‘real’’ geomagnetic magnetic field comprising the International Geomagnetic Reference Field model (IGRF95, IAGA Division 5 Working Group 8, 1996: Sabaka, T.J., Langel, R.A., Baldwin, R.T., Conrad, J.A. The geomagnetic field, 1900–1995, including the large scale fields from magnetospheric sources and NASA candidate models for the 1995 IGRF revision. J. Geomag. Geoelect. 49, 157–206, 1997.) and the Tsyganenko [Tsyganenko, N.A. A magnetospheric magnetic field model with a warped tail current sheet. Planet. Space Sci. 37, 5–20, 1989.] magnetosphere model. The computation have been done for the backward route (from Antarctica to Italy) of the Italian Antarctic ship survey 1996–1997, for geographic points corresponding to the daily average coordinates of the ship; for zenith angles 15°, 30°, 45° and 60°, and azimuth angles from 0° to 360° in steps of 45°. By means of the obtained non-vertical cutoffs the apparent cutoff rigidities have been calculated. The information on integral multiplicities of secondary neutrons detected by the neutron monitor in dependence of the zenith angle of incoming primary cosmic ray particles have also been used. This information is based on the theoretical calculations of meson-nuclear cascades of primary protons with different rigidities arriving to the Earth’s atmosphere at the zenith angles of 0°, 15°, 30°, 45°, 60° and 75°. The difference between the computed apparent and vertical cutoff rigidities reaches ~1 GV at rigidities >7–8 GV. At rigidities of 10–16 GV, the difference between the apparent and vertical cutoff rigidities is larger than that obtained earlier by Clem et al. [Clem, J.M., Bieber, J.W., Duldig, M., Evenson, P., Hall, D., Humble, J.E. Contribution of obliquely incident particles to neutron monitor counting rate. J. ... |
author2 |
L. I., Dorman O. A., Danilova N., Iucci Parisi, Mario N. G., Ptitsyna M. I., Tyasto G., Villoresi |
format |
Article in Journal/Newspaper |
author |
L. I. DORMAN O. A. DANILOVA N. IUCCI PARISI, Mario N. G. PTITSYNA M. I. TYASTO G. VILLORESI |
author_facet |
L. I. DORMAN O. A. DANILOVA N. IUCCI PARISI, Mario N. G. PTITSYNA M. I. TYASTO G. VILLORESI |
author_sort |
L. I. DORMAN |
title |
Effective non-vertical and apparent cutoff rigidities for a cosmic ray latitude survey from Antarctica to Italy in minimum of solar activity |
title_short |
Effective non-vertical and apparent cutoff rigidities for a cosmic ray latitude survey from Antarctica to Italy in minimum of solar activity |
title_full |
Effective non-vertical and apparent cutoff rigidities for a cosmic ray latitude survey from Antarctica to Italy in minimum of solar activity |
title_fullStr |
Effective non-vertical and apparent cutoff rigidities for a cosmic ray latitude survey from Antarctica to Italy in minimum of solar activity |
title_full_unstemmed |
Effective non-vertical and apparent cutoff rigidities for a cosmic ray latitude survey from Antarctica to Italy in minimum of solar activity |
title_sort |
effective non-vertical and apparent cutoff rigidities for a cosmic ray latitude survey from antarctica to italy in minimum of solar activity |
publishDate |
2008 |
url |
http://hdl.handle.net/11590/140670 https://doi.org/10.1016/j.asr.2007.04.032 |
long_lat |
ENVELOPE(163.300,163.300,-72.250,-72.250) |
geographic |
Antarctic Baldwin |
geographic_facet |
Antarctic Baldwin |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000257684300017 volume:42 firstpage:510 lastpage:516 numberofpages:7 journal:ADVANCES IN SPACE RESEARCH http://hdl.handle.net/11590/140670 doi:10.1016/j.asr.2007.04.032 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-44849128325 |
op_doi |
https://doi.org/10.1016/j.asr.2007.04.032 |
container_title |
Advances in Space Research |
container_volume |
42 |
container_issue |
3 |
container_start_page |
510 |
op_container_end_page |
516 |
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1792041773724336128 |