Muons in air showers at the Pierre Auger Observatory: Mean number in highly inclined events
We present the first hybrid measurement of the average muon number in air showers at ultrahigh energies, initiated by cosmic rays with zenith angles between 62° and 80°. The measurement is based on 174 hybrid events recorded simultaneously with the surface detector array and the fluorescence detecto...
| Publicado: |
2015
|
|---|---|
| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v91_n3_p_Multitudinario http://hdl.handle.net/20.500.12110/paper_15507998_v91_n3_p_Multitudinario |
| Aporte de: |
| id |
paper:paper_15507998_v91_n3_p_Multitudinario |
|---|---|
| record_format |
dspace |
| spelling |
paper:paper_15507998_v91_n3_p_Multitudinario2023-06-08T16:22:53Z Muons in air showers at the Pierre Auger Observatory: Mean number in highly inclined events We present the first hybrid measurement of the average muon number in air showers at ultrahigh energies, initiated by cosmic rays with zenith angles between 62° and 80°. The measurement is based on 174 hybrid events recorded simultaneously with the surface detector array and the fluorescence detector of the Pierre Auger Observatory. The muon number for each shower is derived by scaling a simulated reference profile of the lateral muon density distribution at the ground until it fits the data. A 1019eV shower with a zenith angle of 67°, which arrives at the surface detector array at an altitude of 1450 m above sea level, contains on average (2.68±0.04±0.48(sys))×107 muons with energies larger than 0.3 GeV. The logarithmic gain dlnNμ/dlnE of muons with increasing energy between 4×1018eV and 5×1019eV is measured to be (1.029±0.024±0.030(sys)). © 2015 American Physical Society. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v91_n3_p_Multitudinario http://hdl.handle.net/20.500.12110/paper_15507998_v91_n3_p_Multitudinario |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| description |
We present the first hybrid measurement of the average muon number in air showers at ultrahigh energies, initiated by cosmic rays with zenith angles between 62° and 80°. The measurement is based on 174 hybrid events recorded simultaneously with the surface detector array and the fluorescence detector of the Pierre Auger Observatory. The muon number for each shower is derived by scaling a simulated reference profile of the lateral muon density distribution at the ground until it fits the data. A 1019eV shower with a zenith angle of 67°, which arrives at the surface detector array at an altitude of 1450 m above sea level, contains on average (2.68±0.04±0.48(sys))×107 muons with energies larger than 0.3 GeV. The logarithmic gain dlnNμ/dlnE of muons with increasing energy between 4×1018eV and 5×1019eV is measured to be (1.029±0.024±0.030(sys)). © 2015 American Physical Society. |
| title |
Muons in air showers at the Pierre Auger Observatory: Mean number in highly inclined events |
| spellingShingle |
Muons in air showers at the Pierre Auger Observatory: Mean number in highly inclined events |
| title_short |
Muons in air showers at the Pierre Auger Observatory: Mean number in highly inclined events |
| title_full |
Muons in air showers at the Pierre Auger Observatory: Mean number in highly inclined events |
| title_fullStr |
Muons in air showers at the Pierre Auger Observatory: Mean number in highly inclined events |
| title_full_unstemmed |
Muons in air showers at the Pierre Auger Observatory: Mean number in highly inclined events |
| title_sort |
muons in air showers at the pierre auger observatory: mean number in highly inclined events |
| publishDate |
2015 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15507998_v91_n3_p_Multitudinario http://hdl.handle.net/20.500.12110/paper_15507998_v91_n3_p_Multitudinario |
| _version_ |
1768542756527931392 |