25 citations · 152 across the 39 of their papers we have counts for
14 papers · 1 filter
Is there a GeV counterpart in the Fermi GBM events?
C. R. A. Augusto, C. E. Navia, K. H. Tsui +1
In this paper we report a possible GeV counterpart observed at ground level as muons (or "photo-muons") of two Fermi gamma burst monitor (GBM) events, trigger bn081120618 and trigg…
The Hubble diagram of high redshift objects, QSOs and AGNs
C. E. Navia, C. R. A. Augusto, K. H. Tsui
According to the Hubble law, high redshift objects such as Quasar (QSOs), X-ray Active Galactic Nuclei (AGN) together with the Gamma Ray Burst (GRBs) are the fastest and farthest o…
Effects of the South Atlantic Anomaly on the muon flux at sea level
C. R. A. Augusto, J. B. Dolival, C. E. Navia +1
The goal of this study is to examine the response and changes of the muon intensity at ground, due to magnetic anomaly over south Atlantic. Based on the data of two directional muo…
Muons enhancements at sea level in association with Swift-BAT and MILAGRO triggers
C. R. A. Augusto, C. E. Navia, K. H. Tsui
Recently, triggers occurring during high background rate intervals have been reporter by Swift-BAT Gamma Ray Burst (GRB) detector. Among them, there were two on January 24, two on…
Possible evidence of a ground level enhancement of muons in association with a SWIFT Trigger
C. R. A. Augusto, C. E. Navia, M. B. Robba +1
Starting from April 2007, a search for solar daily variation of the muon intensity ( GeV) at sea level and using two directional muon telescopes is in progress. In this su…
On the ultra high energy cosmic rays and the origin of the cosmic microwave background radiation
C. E. Navia, C. R. A. Augusto, K. H. Tsui
Some inconsistencies to the assumption of a cosmological origin of the cosmic microwave background CMB, such as the absence of gravitational lensing in the WMAP data, open the door…
Evidences of high energy protons with energies beyond 0.4 GeV in the solar particle spectrum as responsible for the cosmic rays solar diurnal anisotropy
C. E. Navia, C. R. A. Augusto, M. B. Robba +1
Analysis on the daily variations of cosmic ray muons with based on the data of two directional muon telescopes at sea level and with a rigidity of response to cos…
Inter-galactic gravitational field effect on the propagation of light
C. E. Navia, C. R. A. Augusto, D. F. Franceschini +1
Recent observations of the luminosity-redshift in Type Ia supernovae suggest an accelerated inflation of the Universe (open Universe) as well as the observed matter density showed…
Search for anisotropic light propagation as a function of laser beam alignment relative to the Earth's velocity vector
C. E. Navia, C. R. A. Augusto, D. F. Franceschini +2
A laser diffraction experiment was conducted to study light propagation in air. The experiment is easy to reproduce and it is based on simple optical principles. Two optical sensor…
Amplified Doppler shift observed in diffraction images as function of the COBE "ether drift" direction
C. E. Navia, C. R. A. Augusto
We report results on an ``one-way light path'' laser diffraction experiment as a function of the laser beam alignment relative to the Earth's velocity vector obtained by COBE measu…
Is there a galactic component for the ultra high energy cosmic rays?
C. E. Navia, C. R. A. Augusto, K. H. Tsui
Under the hypothesis that Gamma Ray Burst (GRB) might be responsible for the origin of Ultra High Energy Cosmic Ray (UHECR), we propose a two component (galactic and extra-galactic…
Interplanetary coronal mass ejection effect on the muon flux at sea level
C. E. Navia, C. R. A. Augusto, M. B. Robba
We present the results of 720 hours of observations of transient solar events at ground level, during the summer season 2005 (Souther Hemisphere). Data were taken with the TUPI muo…
Search for muon enhancement at sea level from transient solar activity
C. R. A. Augusto, C. E. Navia, M. b. Robba
This paper presents first results of an ongoing study of a possible association between muon enhancements at ground observed by the TUPI telescope and transient events such as the…
Is there an enhancement of muons at sea level from transient events?
C. E. Navia, C. R. A. Augusto, M. B. Robba +2
In a recent study of a search for enhancements from the galactic center with muons at sea level using the TUPI muon telescope, we have found several ground level enhancements (GLEs…