65 citations · 443 across the 28 of their papers we have counts for
28 papers
Non-thermal GeV emission from the Nereides nebula: confirming the nature of the supernova remnant G107.7-5.1
Miguel Araya
Recently the Nereides nebula was discovered through deep optical emission line observations and was classified as a supernova remnant (SNR) candidate, G107.7-5.1. Since very little…
Discovery of an extended GeV counterpart to the TeV source 1LHAASO J1945+2424 in Fermi-LAT data
Miguel Araya, J. A. Álvarez-Quesada
With almost 15 years of data taken by the Large Area Telescope (LAT) onboard the Fermi satellite we discovered an extended source of GeV emission in the region of the very-high-ene…
The High-Altitude Water Cherenkov (HAWC) Observatory in México: The Primary Detector
A. U. Abeysekara, A. Albert, R. Alfaro +140
The High-Altitude Water Cherenkov (HAWC) observatory is a second-generation continuously operated, wide field-of-view, TeV gamma-ray observatory. The HAWC observatory and its analy…
Fermi-LAT detection of G118.4+37.0: a supernova remnant in the Galactic halo seen around the Calvera pulsar
Miguel Araya
The discovery of a non-thermal radio ring of low surface brightness about one degree in diameter has been recently reported around the location in the sky of the Calvera pulsar, at…
G17.8+16.7: A New Supernova Remnant
Miguel Araya, Natasha Hurley-Walker, Sebastián Quirós-Araya
Non-thermal radio emission is detected in the region of the gamma-ray source FHES J1723.5-0501. The emission has an approximately circular shape 0.8 degrees in diameter. The observ…
Probing the origin of 4FGL J0822.8-4207: cosmic ray illumination from the SNR Puppis A and the Herbig-Haro object HH219
Miguel Araya, Luis Gutiérrez, Stephen Kerby
4FGL J0822.8-4207 is a point source found in the 4FGL-DR2 catalog by the gamma-ray observatory Fermi-LAT and has no known association. We carry out X-ray observations of 4FGL J0822…
GeV emission in the region of the supernova remnant G51.26+0.11
Miguel Araya
The supernova remnant (SNR) G51.26+0.11 was recently discovered and little is known about its properties and environment. Using data from the \emph{Fermi} Large Area Telescope we s…
A source of gamma rays coincident with the shell of the supernova remnant CTB 80
M. Araya, C. Herrera
CTB 80 (G69.0+2.7) is a relatively old (50--80 kyr) supernova remnant (SNR) with a complex radio morphology showing three extended radio arms and a radio and X-ray nebula near the…
HAWC and Fermi-LAT Detection of Extended Emission from the Unidentified Source 2HWC J2006+341
A. Albert, R. Alfaro, C. Alvarez +71
The discovery of the TeV point source 2HWC J2006+341 was reported in the second HAWC gamma-ray catalog. We present a follow-up study of this source here. The TeV emission is best d…
G279.0+1.1: a new extended source of high-energy gamma rays
Miguel Araya
G279.0+1.1 is a supernova remnant (SNR) with poorly known parameters, first detected as a dim radio source and classified as an evolved system. An analysis of data from the Fermi-L…
Exploring the nature of 2HWC J2006+341 with HAWC and Fermi-LAT
Miguel Araya
The High Altitude Water Cherenkov (HAWC) gamma-ray observatory is carrying out a detailed survey of the northern sky at TeV energies. 2HWC J2006+341 is a newly discovered source re…
Revealing a new region of gamma-ray emission in the vicinity of HESS J1825-137
M. Araya, A. M. W. Mitchell, R. D. Parsons
HESS J1825-137 is a bright very-high-energy (VHE) gamma-ray source that has been firmly established as a pulsar wind nebula (PWN), and one of the most extended gamma-ray objects wi…
Analysis of Fermi-LAT observations, UHECRs and neutrinos from the radio galaxy Centaurus B
N. Fraija, M. Araya, A. Galvan-Gamez +1
Centaurus B (Cen B) is one of the closest and brightest radio-loud galaxy in the southern sky. This radio galaxy, proposed as a plausible candidate for accelerating ultra-high-ener…
GeV emission in the region of HESS J1809-193 and HESS J1813-178: is HESS J1809-193 a proton pevatron?
Miguel Araya
HESS J1809-193 is an unidentified TeV source discovered by the High Energy Stereoscopic System and originally classified as a pulsar wind nebula (PWN) candidate associated with the…
Modeling the high-energy emission in GRB 110721A and implications on the early multiwavelength and polarimetric observations
N. Fraija, W. H. Lee, M. Araya +3
GRB 110721A was detected by the Gamma-ray Burst Monitor and the Large Area Telescope (LAT) onboard the Fermi satellite and the Gamma-ray Burst Polarimeter onboard the IKAROS solar…
Detection of GeV Gamma-rays from HESS J1534-571 and Multiwavelength Implications for the Origin of the Non-thermal Emission
Miguel Araya
HESS J1534-571 is a very high energy gamma-ray source that was discovered by the H.E.S.S. observatory and reported as one of several new sources with a shell-like morphology at TeV…
Fermi LAT observation of VER J2019+407
Miguel Araya, Nissim Fraija
Analysis of data from the Fermi Large Area Telescope (LAT) in the region of the supernova remnant G78.2+2.1 reveals an excess at the position of the TeV source VER J2019+407. The G…
Discovery of an extended source of gamma-ray emission in the Southern Hemisphere
Miguel Araya
We report the discovery of a $3.4\degr$-wide region of high-energy emission in data from the \emph{Fermi} LAT satellite. The centroid of the emission is located in the South…
Search for gamma-ray emission from star-forming galaxies with Fermi LAT
Cesar Rojas-Bravo, Miguel Araya
Recent studies have found a positive correlation between the star-formation rate of galaxies and their gamma-ray luminosity. Galaxies with a high star-formation rate are expected t…
The GeV counterpart of VER J2019+407 in the northern shell of the supernova remnant G78.2+2.1 ( Cygni)
Nissim Fraija, Miguel Araya
Analysis of gamma-ray emission from the supernova remnant G78.2+2.1 ( Cygni) with 7.2 years of cumulative data from the Fermi-LAT telescope shows a distinct hard, bright and ext…
Modeling the multiwavelength emission from G73.9+0.9: Gamma-rays from a SNR-MC interaction
Miguel Araya
G73.9+0.9 has been classified as a probable shell-type supernova remnant (SNR), although it has also been suggested that this object could be a pulsar wind nebula (PWN). Here, a br…
Fermi LAT Observation of Supernova Remnant HB9
Miguel Araya
A 5.5-year Fermi LAT gamma-ray observation shows significant extended emission at the position of the supernova remnant HB9 (G160.9+2.6). The significance of the detection above th…
Approximate Metric for a Rotating Deformed Mass
Francisco Frutos-Alfaro, Paulo Montero-Camacho, Miguel Araya-Arguedas +1
A new Kerr-like metric with quadrupole moment is obtained by means of perturbing the Kerr spacetime. The form of this new metric is simple as the Kerr metric. By comparison with th…
Detection of Gamma-Ray Emission in the Region of the Supernova Remnants G296.5+10.0 and G166.0+4.3
Miguel Araya
52 months of accumulated observations by the Large Area Telescope onboard the Fermi Gamma-ray Space Telescope in the region of the supernova remnants G296.5+10.0 (PKS 1209-51/52) a…