High-Altitude Cosmic-Ray Latitude Effect from 51° to 65°N Geomagnetic Latitude

1957 ◽  
Vol 108 (1) ◽  
pp. 148-154 ◽  
Author(s):  
J. R. Winckler ◽  
K. A. Anderson
Keyword(s):  
High Altitude ◽  
Geomagnetic Latitude ◽  
Cosmic Ray ◽  
Latitude Effect

A STATISTICAL ANALYSIS OF THE BAROMETER COEFFICIENTS FOR COSMIC-RAY INTENSITIES

1962 ◽  
Vol 40 (6) ◽  
pp. 687-697 ◽  
Author(s):  
S. M. Lapointe ◽  
D. C. Rose
Keyword(s):  
Statistical Analysis ◽  
Sea Level ◽  
Neutron Monitor ◽  
Seasonal Variations ◽  
Geomagnetic Latitude ◽  
Cosmic Ray ◽  
Seasonal Fluctuations ◽  
Latitude Effect ◽  
Standard Neutron ◽  
The One

The data from all four Canadian cosmic-ray stations, Ottawa, Resolute, Churchill, and Sulphur Mountain, have been analyzed statistically with the help of an I.B.M. 650 computer over a period of three and a half years extending from the beginning of the I.G.Y. in July 1957 to the end of 1960. The barometer coefficients for triple and double coincidences in the international cubical telescope and for the nucleon intensity in the standard neutron monitor have been derived. A single correlation between intensity and pressure was used; two different ways of effecting this correlation were tried over a 6-month period. The results were compared and the best method was applied to the remaining three years. Monthly values were calculated, as were yearly values and also values for the 3-year period. The results reveal no significant seasonal variations in the barometer coefficients and no significant year-to-year variation. However, the seasonal fluctuations of the nucleon coefficient unsuspectedly follow those of the meson. A small latitude effect seems to be present. The nucleon coefficient at Sulphur Mountain, a high altitude station, is larger than the one at Ottawa (same geomagnetic latitude, sea level station).

scholarly journals Coincidence counter measurements of cosmic rays in an aeroplane

1936 ◽  
Vol 156 (889) ◽  
pp. 570-577 ◽  
Keyword(s):  
Cosmic Rays ◽  
High Altitude ◽  
Cosmic Ray ◽  
Independent Sets ◽  
Vertical Line ◽  
Coincidence Counting ◽  
Detailed Design ◽  
Recording Apparatus ◽  
Coincidence Counter ◽  
Balloon Experiments

Cosmic ray measurements on mountains are limited in general to altitudes below about 4000 meters. Above this height Regener has made successful use of small balloons carrying self-recording apparatus, and occasional flights have been made with manned balloons by Piccard, Cosyns, and by American workers. Balloon experiments are, however, hardly practicable in this country, so we decided to investigate cosmic rays, and in particular the production of showers, using an aeroplane. Facilities for flying to a height of about 10 km. Were generously provided by the Air Ministry. Apparatus Two independent sets of three tube counters were used in conjunction with the usual coincidence counting circuits. The counters could be arranged in a vertical line to record vertical penetrating particles, or in a triangle to record showers. The triple coincidences were recorded by telephone counters which were photographed at intervals together with a clock and aneroid barometer. The detailed design of the apparatus required some consideration since the aeroplane available (the Vickers Vespa machine used for high altitude experiments at the Royal Aircraft Establishment) had an open observer’s cockpit in which the counting set had to be installed.

scholarly journals High‐altitude polar NM with the new DAQ system as a tool to study details of the cosmic‐ray induced nucleonic cascade

2021 ◽  
Author(s):  
Markus Similä ◽  
Ilya Usoskin ◽  
Stepan Poluianov ◽  
Alexander Mishev ◽  
Gennady A. Kovaltsov ◽  
...  
Keyword(s):  
High Altitude ◽  
Cosmic Ray

scholarly journals New High-Altitude Study of Cosmic-Ray Bands and a New Determination of Their Total Energy Content

1933 ◽  
Vol 44 (4) ◽  
pp. 246-252 ◽  
Author(s):  
I. S. Bowen ◽  
R. A. Millikan ◽  
H. V. Neher
Keyword(s):  
Total Energy ◽  
High Altitude ◽  
Energy Content ◽  
Cosmic Ray ◽  
Total Energy Content

scholarly journals Highlights from HAWC

2019 ◽  
Vol 208 ◽  
pp. 14001
Author(s):  
H. León Vargas
Keyword(s):  
Energy Range ◽  
High Altitude ◽  
High Precision ◽  
Gamma Rays ◽  
Large Data ◽  
Cosmic Ray ◽  
Air Showers ◽  
Data Set ◽  
Sierra Negra Volcano ◽  
Selection Of

The HAWC (High Altitude Water Cherenkov) observatory, located on the slopes of the Sierra Negra volcano in the state of Puebla, Mexico, was designed with the goal of detecting gamma-rays in the Teraelectron- volt energy range. However, most of the air showers that are detected with the observatory, with a rate of ≈ 27 kHz, are of hadronic origin. This makes that, after three years of operations, HAWC has accumulated a very large data set that allows to perform cosmic-ray analysis of high precision. The details of the observatory operation, as well as a selection of recent results in cosmic-ray physics are discussed in this work.

Latitude Effect of Penetrating Cosmic Ray Showers

Nature ◽  
1948 ◽  
Vol 162 (4127) ◽  
pp. 887-888 ◽  
Author(s):  
V. APPAPILLAI ◽  
A. W. MAILVAGANAM
Keyword(s):  
Cosmic Ray ◽  
Latitude Effect

Continuous High-Altitude Measurements of Cosmic Ray Neutrons and SEU/MCU at Various Locations: Correlation and Analyses Based-On MUSCA SEP$^{3}$

2013 ◽  
Vol 60 (4) ◽  
pp. 2418-2426 ◽  
Author(s):  
G. Hubert ◽  
R. Velazco ◽  
C. Federico ◽  
A. Cheminet ◽  
C. Silva-Cardenas ◽  
...  
Keyword(s):  
High Altitude ◽  
Cosmic Ray

scholarly journals Recent Studies of the Cosmic-Ray Latitude Effect at High Altitudes

1948 ◽  
Vol 20 (1) ◽  
pp. 360-366 ◽  
Author(s):  
A. T. Biehl ◽  
R. A. Montgomery ◽  
H. V. Neher ◽  
W. H. Pickering ◽  
W. C. Roesch
Keyword(s):  
Cosmic Ray ◽  
High Altitudes ◽  
Latitude Effect

THE HYDROGEN COMPONENT IN THE PRIMARY COSMIC RADIATION

1962 ◽  
Vol 40 (9) ◽  
pp. 1049-1055 ◽  
Author(s):  
H. H. Aly
Keyword(s):  
High Altitude ◽  
Cosmic Radiation ◽  
Nuclear Emulsion ◽  
Geomagnetic Latitude ◽  
The Other ◽  
Primary Cosmic Radiation ◽  
Good Agreement

Two values for the flux of the hydrogen component in the primary cosmic radiation have been measured. The first one was over Guam in the Marianas Islands, geomagnetic latitude λ = 0°. The value of the flux was found to be (123 ± 12) hydrogen nuclei/m2 sterad sec. The second measurement was made over Texas, λ = 41 °N., and the value found was (530 ± 53) hydrogen nuclei/m2 sterad sec. The detectors in both cases were stacks of nuclear emulsion exposed at high altitude. The results obtained in this experiment are in good agreement with the values obtained by the other authors using electronic counters flown at the same geomagnetic latitudes.

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