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View article: γ-Ray Emission from Classical Nova V392 Per: Measurements from Fermi and HAWC
γ-Ray Emission from Classical Nova V392 Per: Measurements from Fermi and HAWC Open
This paper reports on the γ -ray properties of the 2018 Galactic nova V392 Per, spanning photon energies ∼0.1 GeV–100 TeV by combining observations from the Fermi Gamma-ray Space Telescope and the HAWC Observatory. As one of the most rapid…
View article: Constraints on the Very High Energy Gamma-Ray Emission from Short GRBs with HAWC
Constraints on the Very High Energy Gamma-Ray Emission from Short GRBs with HAWC Open
Many gamma-ray bursts (GRBs) have been observed from radio wavelengths, and a few at very high energies (VHEs, >100 GeV). The High Altitude Water Cherenkov (HAWC) gamma-ray observatory is well suited to study transient phenomena at VHEs ow…
View article: A measurement of the proton plus helium spectrum of cosmic rays in the TeV region with HAWC
A measurement of the proton plus helium spectrum of cosmic rays in the TeV region with HAWC Open
HAWC is an air-shower detector designed to study TeV gamma and cosmic rays. The observatory is composed of a $22000 \, m^2$ array of $300$ water Cherenkov tanks ($4.5 \, m$ deep x $7.3 \, m$ diameter) with $4$ photomultipliers (PMT) each. …
View article: Study of the Very High Energy Emission of M87 through its Broadband Spectral Energy Distribution
Study of the Very High Energy Emission of M87 through its Broadband Spectral Energy Distribution Open
The radio galaxy M87 is the central dominant galaxy of the Virgo Cluster. Very high-energy (VHE, ≳0.1 TeV) emission from M87 has been detected by imaging air Cherenkov telescopes. Recently, marginal evidence for VHE long-term emission has …
View article: HAWC Study of the Ultra-high-energy Spectrum of MGRO J1908+06
HAWC Study of the Ultra-high-energy Spectrum of MGRO J1908+06 Open
We report TeV gamma-ray observations of the ultra-high-energy source MGRO J1908+06 using data from the High Altitude Water Cherenkov Observatory. This source is one of the highest-energy known gamma-ray sources, with emission extending pas…
View article: Cosmic ray spectrum of protons plus helium nuclei between 6 and 158 TeV from HAWC data
Cosmic ray spectrum of protons plus helium nuclei between 6 and 158 TeV from HAWC data Open
A measurement with high statistics of the differential energy spectrum of\nlight elements in cosmic rays, in particular, of primary H plus He nuclei, is\nreported. The spectrum is presented in the energy range from $6$ to $158$ TeV\nper nu…
View article: ExHaLe-jet: An extended hadro-leptonic jet model for blazars. I. Code description and initial results
ExHaLe-jet: An extended hadro-leptonic jet model for blazars. I. Code description and initial results Open
The processes operating in blazar jets are still an open question. Modeling the radiation emanating from an extended part of the jet allows one to capture these processes on all scales. Kinetic codes solving the Fokker-Planck equation alon…
View article: Flare echos from relaxation shocks in perturbed relativistic jets
Flare echos from relaxation shocks in perturbed relativistic jets Open
One of the main scenarios to account for the multi-wavelength flux variability observed in relativistic jets of AGNs is based on diffusive shock acceleration of a population of relativistic electrons on internal shocks of various origins. …
View article: HAWC Study of the Ultra-High-Energy Spectrum of MGRO J1908+06
HAWC Study of the Ultra-High-Energy Spectrum of MGRO J1908+06 Open
We report TeV gamma-ray observations of the ultra-high-energy source MGRO\nJ1908+06 using data from the High Altitude Water Cherenkov (HAWC) Observatory.\nThis source is one of the highest-energy known gamma-ray sources, with emission\next…
View article: Flux variability from ejectas in structured relativistic jets with large-scale magnetic fields
Flux variability from ejectas in structured relativistic jets with large-scale magnetic fields Open
Using the relativistic MHD code MPI-AMRVAC and a radiative transfer code in post-processing, we explore the influence of the magnetic-field configuration and transverse stratification of an over-pressured jet on its morphology, on the movi…
View article: Multimessenger Gamma-Ray and Neutrino Coincidence Alerts Using HAWC and IceCube Subthreshold Data
Multimessenger Gamma-Ray and Neutrino Coincidence Alerts Using HAWC and IceCube Subthreshold Data Open
The High Altitude Water Cerenkov (HAWC) and IceCube observatories, through the Astrophysical Multimessenger Observatory Network (AMON) framework, have developed a multimessenger joint search for extragalactic astrophysical sources. This an…
View article: Search for gamma-ray spectral lines from dark matter annihilation in dwarf galaxies with the High-Altitude Water Cherenkov observatory
Search for gamma-ray spectral lines from dark matter annihilation in dwarf galaxies with the High-Altitude Water Cherenkov observatory Open
Local dwarf spheroidal galaxies (dSphs) are nearby dark-matter dominated systems, making them excellent targets for searching for gamma rays from particle dark matter interactions. If dark matter annihilates or decays directly into two gam…
View article: Constraining the local burst rate density of primordial black holes with HAWC
Constraining the local burst rate density of primordial black holes with HAWC Open
Primordial Black Holes (PBHs) may have been created by density fluctuations in the early Universe and could be as massive as $> 10^9$ solar masses or as small as the Planck mass. It has been postulated that a black hole has a temperature i…
View article: Constraints on Lorentz Invariance Violation from HAWC Observations of Gamma Rays above 100 TeV
Constraints on Lorentz Invariance Violation from HAWC Observations of Gamma Rays above 100 TeV Open
Because of the high energies and long distances to the sources, astrophysical observations provide a unique opportunity to test possible signatures of Lorentz invariance violation (LIV). Superluminal LIV enables the decay of photons at hig…
View article: Features of the energy spectrum of cosmic rays above $2.5{\times} 10^{18}$ eV using the Pierre Auger Observatory
Features of the energy spectrum of cosmic rays above $2.5{\times} 10^{18}$ eV using the Pierre Auger Observatory Open
We report a measurement of the energy spectrum of cosmic rays above $2.5{\times} 10^{18}$ eV based on $215,030$ events. New results are presented: at about $1.3{\times} 10^{19}$ eV, the spectral index changes from $2.51 \pm 0.03 \textrm{ (…
View article: Contributions of the LAGO Collaboration to the 36th ICRC
Contributions of the LAGO Collaboration to the 36th ICRC Open
The LAGO (Latin American Giant Observatory) observatory is an experiment that spans over Latin America in a wide range of latitudes that gives different rigidity cut offs for the enter of cosmic rays in the atmosphere. The motivation of th…
View article: The Southern Wide-Field Gamma-Ray Observatory (SWGO): A Next-Generation Ground-Based Survey Instrument for VHE Gamma-Ray Astronomy
The Southern Wide-Field Gamma-Ray Observatory (SWGO): A Next-Generation Ground-Based Survey Instrument for VHE Gamma-Ray Astronomy Open
We describe plans for the development of the Southern Wide-field Gamma-ray Observatory (SWGO), a next-generation instrument with sensitivity to the very-high-energy (VHE) band to be constructed in the Southern Hemisphere. SWGO will provide…
View article: Where are the pevatrons
Where are the pevatrons Open
The search for cosmic particle accelerators capable of reaching the PeV (1015 eV) range, PeVatrons, is a crucial science target of the very-high-energy (gamma-ray do-main around ∼ TeV= 1012 eV) community. Such accelerators are essential in…
View article: Exploring Beyond-the-Standard-Model Physics with TeV Gamma-rays
Exploring Beyond-the-Standard-Model Physics with TeV Gamma-rays Open
Observation of new physics beyond the Standard Model of particle physics would revolutionize the way we see the world. Such effects are often best searched for in the most energetic regions of space and on cosmic scales. Even small effects…
View article: Pulsars in a Bubble? Following Electron Diffusion in the Galaxy with TeV\n Gamma Rays
Pulsars in a Bubble? Following Electron Diffusion in the Galaxy with TeV\n Gamma Rays Open
TeV Halos, extended regions of TeV gamma-ray emission around middle-aged\npulsars, have recently been established as a new source class in gamma-ray\nastronomy. These halos have been attributed to relativistic electrons and\npositrons that…
View article: Pulsars in a Bubble? Following Electron Diffusion in the Galaxy with TeV Gamma Rays
Pulsars in a Bubble? Following Electron Diffusion in the Galaxy with TeV Gamma Rays Open
TeV Halos, extended regions of TeV gamma-ray emission around middle-aged pulsars, have recently been established as a new source class in gamma-ray astronomy. These halos have been attributed to relativistic electrons and positrons that ha…
View article: All-sky measurement of the anisotropy of cosmic rays at 10 TeV and mapping of the local interstellar magnetic field
All-sky measurement of the anisotropy of cosmic rays at 10 TeV and mapping of the local interstellar magnetic field Open
We present the first full-sky analysis of the cosmic ray arrival direction distribution with data collected by the High-Altitude Water Cherenkov and IceCube observatories in the northern and southern hemispheres at the same median primary …
View article: Constraints on spin-dependent dark matter scattering with long-lived mediators from TeV observations of the Sun with HAWC
Constraints on spin-dependent dark matter scattering with long-lived mediators from TeV observations of the Sun with HAWC Open
We analyze the Sun as a source for the indirect detection of dark matter through a search for gamma rays from the solar disk. Capture of dark matter by elastic interactions with the solar nuclei followed by annihilation to long-lived media…
View article: First HAWC observations of the Sun constrain steady TeV gamma-ray emission
First HAWC observations of the Sun constrain steady TeV gamma-ray emission Open
© 2018 American Physical Society. Steady gamma-ray emission up to at least 200 GeV has been detected from the solar disk in the Fermi-LAT data, with the brightest, hardest emission occurring during solar minimum. The likely cause is hadron…
View article: First HAWC Observations of the Sun Constrain Steady TeV Gamma-Ray Emission
First HAWC Observations of the Sun Constrain Steady TeV Gamma-Ray Emission Open
Steady gamma-ray emission up to at least 200 GeV has been detected from the solar disk in the Fermi-LAT data, with the brightest, hardest emission occurring during solar minimum. The likely cause is hadronic cosmic rays undergoing collisio…
View article: Constraints on Spin-Dependent Dark Matter Scattering with Long-Lived Mediators from TeV Observations of the Sun with HAWC
Constraints on Spin-Dependent Dark Matter Scattering with Long-Lived Mediators from TeV Observations of the Sun with HAWC Open
We analyze the Sun as a source for the indirect detection of dark matter through a search for gamma rays from the solar disk. Capture of dark matter by elastic interactions with the solar nuclei followed by annihilation to long-lived media…
View article: All-particle cosmic ray energy spectrum measured by the HAWC experiment from 10 to 500 TeV
All-particle cosmic ray energy spectrum measured by the HAWC experiment from 10 to 500 TeV Open
We report on the measurement of the all-particle cosmic ray energy spectrum\nwith the High Altitude Water Cherenkov (HAWC) Observatory in the energy range\n10 to 500 TeV. HAWC is a ground based air-shower array deployed on the slopes\nof V…
View article: SEARCH FOR TeV GAMMA-RAY EMISSION FROM POINT-LIKE SOURCES IN THE INNER GALACTIC PLANE WITH A PARTIAL CONFIGURATION OF THE HAWC OBSERVATORY
SEARCH FOR TeV GAMMA-RAY EMISSION FROM POINT-LIKE SOURCES IN THE INNER GALACTIC PLANE WITH A PARTIAL CONFIGURATION OF THE HAWC OBSERVATORY Open
A survey of the inner Galaxy region of Galactic longitude and latitude is performed using one-third of the High Altitude Water Cherenkov Observatory, operated during its construction phase. To address the ambiguities arising from unresolve…