activity
20042024
most citedRelativistic proton levels from region AR 12673 (GLE \#72) and the heliospheric current sheet as a SunEarth magnetic connection

25 citations · 152 across the 39 of their papers we have counts for

collaborators
Showing astro-ph.HEShow all

8 papers · 1 filter

astro-ph.HE2023

Compton-Getting effect due to terrestrial orbital motion observed on cosmic ray flow from Mexico-city Neutron Monitor

Carlos Navia, Marcel de Oliveira, Andre Nepomuceno

We look for a diurnal anisotropy in the cosmic ray flow, using the Mexico-City Neutron Monitor (NM) detector, due to the Earth's orbital motion and predicted by Compton-Getting (C-…

astro-ph.HE2023

Alignment of air showers produced by ultra-high energy cosmic rays at the Pierre Auger Observatory

Carlos Navia, Marcel de Oliveira, Andre Nepomuceno

We show that the energy-weighted angular (zenith, azimuth) distribution of extensive air showers (EAS), produced by Ultra High Energy (UHE) cosmic rays at the Pierre Auger Observat…

astro-ph.HE2020★ 1 cited

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…

astro-ph.HE2018★ 1 cited

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…

astro-ph.HE2016★ 1 cited

Prompt emission from GRB 150915A in the GeV energy range detected at ground by the New-Tupi detector: A review

C. R. A. Augusto, C. E. Navia, M. N. de Oliveira +3

Since 2014, a new detector (New-Tupi) consisting of four plastic scintillators () placed in pairs and located in Niteroi, Rio de Janeiro, Brazil, has b…

astro-ph.HE2012

Plasma Pressure Driven Asymmetric Supernovae and Highly Collimated Gamma-Ray Bursts

K. H. Tsui, C. E. Navia

During the process of collapse of a massive star, a cavity is generated between the central iron core and an outer stellar envelope. The dynamics of this cavity, filled with plasma…