25 citations · 95 across the 22 of their papers we have counts for
22 papers
On the short term modulation of cosmic rays by high-speed streams at the Pierre Auger surface array detectors
M. N. de Oliveira, C. R. A. Augusto, C. E. Navia +1
We present an analysis of the short-term modulation (one rotation of Bartels-27 days) of the galactic cosmic rays (GCR) by the solar wind, based on the cosmic ray rates observed by…
Possible GeV counterpart at the ground level associated with Fermi LAT gamma-ray bursts
C. R. A. Augusto, C. E. Navia, M. N. de Oliveira +3
From June 2014 to February 2017, the Fermi LAT detected 46 gamma-ray bursts (GRBs) with photon energies above 20 MeV, and the trigger coordinates of seven of them were within the F…
Relativistic proton levels from region AR 12673 (GLE \#72) and the heliospheric current sheet as a SunEarth magnetic connection
C. R. A. Augusto, C. E. Navia, M. N. de Oliveira +4
On 2017 September 10 Neutron Monitors (NMs) apparatus located at ground level and high latitudes detected an increase in the counting rate associated to solar energetic particles (…
Muon Excess at Sea Level during the Progress of a Geomagnetic Storm and High Speed Stream Impact Near the Time of Eath's Heliospheric Sheet Crossing
C. R. A. Augusto, C. E. Navia, M. N. de Oliveira +3
In this article we present results of the study on the association between the muon flux variation at ground level, registered by the \textit{\textit{New-Tupi}} muon telescopes ($2…
Ground level observations of relativistic solar particles on Oct 29th, 2015: Is it a new GLE on the current solar cycle?
C. R. A. Augusto, C. E. Navia, M. N. de Oliveira +2
On Oct. 29th, 2015, the Earth crossed through a fold in the heliospheric current sheet. This is called a "solar sector boundary crossing". Under this circumstances, a large coronal…
Signals at ground level of relativistic solar particles associated to the "All Saints" filament eruption on 2014
C. R. A. Augusto, C. E. Navia, M. N. de Oliveira +3
Far away from any sunspot, a bright flare erupted on November 1st, 2014, with onset at 4:44 UT and a duration of around three hours, causing a C2.7-class flare. The blast was assoc…