The CALET Calorimeter on the International Space Station(ISS) has previously measured the flux and spectrum of iron cosmic-ray nuclei above 10 GeV/n. In order to extend the measurement to the region below 10 GeV/n, we carry out an analysis to utilize the geomagnetic effect. Cutoff rigidities of cosmic-ray nuclei are calculated for all directions for each observation point in the ISS orbit. The integral spectrum of observed rigidities is then obtained by counting the number of iron nuclei in each bin of cutoff rigidity. The absolute flux and differential spectrum are then calculated by taking the detection efficiencies into account. Here we present the details of the analysis procedure and the iron spectrum below 10 GeV/n.

Measurement of iron cosmic-ray primaries below 10 GeV/n by use of the geomagnetic effect with CALET / Ichimura, M., Kasahara, K., Adriani, O., Akaike, Y., Asano, K., Asaoka, Y., Berti, E., Bigongiari, G., Binns, W.R., Bongi, M., Brogi, P., Bruno, A., Cannady, N.W., Castellini, G., Checchia, C., Cherry, W.R., Collazuol, G., de Nolfo, G.A., Ebisawa, K., Ficklin, A.W., et al.. - In: POS PROCEEDINGS OF SCIENCE. - ISSN 1824-8039. - ELETTRONICO. - 444 - 38th International Cosmic Ray Conference (ICRC2023):(2024), pp. 0-0. (38th International Cosmic Ray Conference, ICRC2023 Nagoya, Japan 26 July - 3 August, 2023) [10.22323/1.444.0057].

Measurement of iron cosmic-ray primaries below 10 GeV/n by use of the geomagnetic effect with CALET

Adriani, Oscar;Berti, Eugenio;Bongi, Massimo;Gonzi, Sandro;Pacini, Lorenzo;Spillantini, Piero;
2024

Abstract

The CALET Calorimeter on the International Space Station(ISS) has previously measured the flux and spectrum of iron cosmic-ray nuclei above 10 GeV/n. In order to extend the measurement to the region below 10 GeV/n, we carry out an analysis to utilize the geomagnetic effect. Cutoff rigidities of cosmic-ray nuclei are calculated for all directions for each observation point in the ISS orbit. The integral spectrum of observed rigidities is then obtained by counting the number of iron nuclei in each bin of cutoff rigidity. The absolute flux and differential spectrum are then calculated by taking the detection efficiencies into account. Here we present the details of the analysis procedure and the iron spectrum below 10 GeV/n.
2024
38th International Cosmic Ray Conference, ICRC2023
38th International Cosmic Ray Conference, ICRC2023
Nagoya, Japan
26 July - 3 August, 2023
Ichimura, Masakatsu;Kasahara, Katsumasa;Adriani, Oscar;Akaike, Yosui;Asano, Katsuaki;Asaoka, Yoichi;Berti, Eugenio;Bigongiari, Gabriele;Binns, Walter ...espandi
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1349499
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