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View article: Longtime Monitoring of TeV Radio Galaxies with HAWC
Longtime Monitoring of TeV Radio Galaxies with HAWC Open
We present the monitoring of the TeV-emitting radio galaxies M87, NGC 1275, 3C 264, and IC 310 with the High-Altitude Water Cherenkov Observatory (HAWC) over a period of approximately 7.5 yr. The analysis includes light curves at daily, we…
View article: HAWC Performance Enhanced by Machine Learning in Gamma-hadron Separation
HAWC Performance Enhanced by Machine Learning in Gamma-hadron Separation Open
Improving gamma-hadron separation is one of the most effective ways to enhance the performance of ground-based gamma-ray observatories. With more than a decade of continuous operation, the High-Altitude Water Cherenkov (HAWC) Observatory h…
View article: Study of the IC 443 Region with the HAWC Observatory
Study of the IC 443 Region with the HAWC Observatory Open
Supernova remnants are one potential source class considered a PeVatron (i.e., capable of accelerating cosmic rays above PeV energies). The shock fronts produced after the explosion of the supernova are ideal regions for particle accelerat…
View article: Overview of the CORSIKA 8 astroparticle simulation framework
Overview of the CORSIKA 8 astroparticle simulation framework Open
The simulation of particle cascades is an essential foundation for the analysis chains of many astroparticle physics experiments, irrespective of whether they investigate primarily charged cosmic rays, very high-energy photons or neutrinos…
View article: Simulating radio emissions from particle showers in complex media with CORSIKA 8
Simulating radio emissions from particle showers in complex media with CORSIKA 8 Open
CORSIKA 8 is a modern Monte-Carlo simulation framework for particle showers in air and dense media. The calculation of shower-induced radio-emissions is a key element of the code, relevant for experiments targeting radio detection of cosmi…
View article: Gamma-ray identification with Sb
Gamma-ray identification with Sb Open
Gamma-ray observatories must efficiently distinguish gamma-ray-induced showers from the abundant background of hadronic showers. The shape of the lateral signal distribution offers crucial information for this task. Sb is a key observable …
View article: Probing the mass composition of TeV cosmic rays with HAWC
Probing the mass composition of TeV cosmic rays with HAWC Open
In this contribution, we have investigated the energy spectra of the elemental mass groups of cosmic rays for the Light (H+He), medium (C+O) and heavy (Ne-Fe) components using the High Altitude Water Cherenkov Gamma-Ray observatory (HAWC).…
View article: From collider to cosmic rays: Pythia 8/Angantyr for air shower simulations in CORSIKA 8
From collider to cosmic rays: Pythia 8/Angantyr for air shower simulations in CORSIKA 8 Open
The simulation of extensive air showers is pivotal for advancing our understanding of high-energy cosmic ray interactions in Earth's atmosphere. The CORSIKA 8 framework is being developed as a modern, flexible, and efficient tool for simul…
View article: Simulating radio emission from extensive air showers with CORSIKA 8
Simulating radio emission from extensive air showers with CORSIKA 8 Open
CORSIKA 8 is a modern, flexible framework for simulating particle cascades in air and dense media, allowing for fully customizable shower simulations. The radio module autonomously handles electric field calculations and propagation to obs…
View article: Orbital Modulation of Gamma Rays up to 100 TeV from LS 5039
Orbital Modulation of Gamma Rays up to 100 TeV from LS 5039 Open
Gamma-ray binaries are luminous in gamma rays, composed of a compact object orbiting a massive companion star. The interaction between these two objects can drive relativistic outflows, either jets or winds, in which particles can be accel…
View article: Extended TeV Halos May Commonly Exist around Middle-Aged Pulsars
Extended TeV Halos May Commonly Exist around Middle-Aged Pulsars Open
Extended gamma-ray emission around isolated pulsars at TeV energies, also known as TeV halos, have been found around a handful of middle-aged pulsars. The halos are significantly more extended than their pulsar wind nebulae but much smalle…
View article: Orbital Modulation of Gamma-Rays Beyond 100 TeV from LS 5039
Orbital Modulation of Gamma-Rays Beyond 100 TeV from LS 5039 Open
Gamma-ray binaries are systems composed of a compact object orbiting a massive companion star. The interaction between these two objects can drive relativistic outflows, either jets or winds, in which particles can be accelerated to energi…
View article: Ideas and Requirements for the Global Cosmic-Ray Observatory (GCOS)
Ideas and Requirements for the Global Cosmic-Ray Observatory (GCOS) Open
After a successful kick-off meeting in 2021. two workshops in 2022 and 2023 on the future Global Cosmic-Ray Observatory (GCOS) focused mainly on a straw man design of the detector and science possibilities for astro- and particle physics. …
View article: Absence of TeV halos around millisecond pulsars
Absence of TeV halos around millisecond pulsars Open
TeV halos are extended very-high-energy (VHE; 0.1-100 TeV) gamma-ray emission around middle-aged pulsars. So far they have only been found around isolated pulsars, but it has been suggested that they may also be powered by millisecond puls…
View article: Study of Long-term Spectral Evolution and X-Ray and <i>γ</i>-Ray Correlation of Blazars Seen by HAWC
Study of Long-term Spectral Evolution and X-Ray and <i>γ</i>-Ray Correlation of Blazars Seen by HAWC Open
The HAWC Observatory collected 6 yr of extensive data, providing an ideal platform for long-term monitoring of blazars in the very high energy (VHE) band, without bias toward specific flux states. HAWC continuously monitors blazar activity…
View article: Study of long-term spectral evolution and X-ray and Gamma-ray correlation of blazars seen by HAWC
Study of long-term spectral evolution and X-ray and Gamma-ray correlation of blazars seen by HAWC Open
The HAWC Observatory collected 6 years of extensive data, providing an ideal platform for long-term monitoring of blazars in the Very High Energy (VHE) band, without bias towards specific flux states. HAWC continuously monitors blazar acti…
View article: Study of the IC 443 region with the HAWC observatory
Study of the IC 443 region with the HAWC observatory Open
Supernova remnants are one potential source class considered a PeVatron (i.e. capable of accelerating cosmic rays above PeV energies). The shock fronts produced after the explosion of the supernova are ideal regions for particle accelerati…
View article: Analysis of the Emission and Morphology of the Pulsar Wind Nebula Candidate HAWC J2031+415
Analysis of the Emission and Morphology of the Pulsar Wind Nebula Candidate HAWC J2031+415 Open
The first TeV γ -ray source with no lower energy counterparts, TeV J2032+4130, was discovered by HEGRA. It appears in the third HAWC catalog as 3HWC J2031+415 and it is a bright TeV γ -ray source whose emission has previously been resolved…
View article: Spectral Study of Very-high-energy Gamma Rays from SS 433 with HAWC
Spectral Study of Very-high-energy Gamma Rays from SS 433 with HAWC Open
Very-high-energy (0.1–100 TeV) gamma-ray emissions were observed in High-Altitude Water Cherenkov (HAWC) data from the lobes of the microquasar SS 433, making them the first set of astrophysical jets that were resolved at TeV energies. In …
View article: Spectral study of very high energy gamma rays from SS 433 with HAWC
Spectral study of very high energy gamma rays from SS 433 with HAWC Open
Very-high-energy (0.1-100 TeV) gamma-ray emission was observed in HAWC data from the lobes of the microquasar SS 433, making them the first set of astrophysical jets that were resolved at TeV energies. In this work, we update the analysis …
View article: Precise Measurements of TeV Halos around Geminga and Monogem Pulsars with HAWC
Precise Measurements of TeV Halos around Geminga and Monogem Pulsars with HAWC Open
We present the most precise measurements to date for the spatial extension and energy spectrum of the γ -ray region between a pulsar’s wind nebula and the interstellar medium, better known as the halo, present around Geminga and PSR B0656+…
View article: Observation of the Galactic Center PeVatron beyond 100 TeV with HAWC
Observation of the Galactic Center PeVatron beyond 100 TeV with HAWC Open
We report an observation of ultrahigh-energy (UHE) gamma rays from the Galactic center (GC) region, using 7 yr of data collected by the High-Altitude Water Cherenkov (HAWC) Observatory. The HAWC data are best described as a point-like sour…
View article: TeV Analysis of a Source-rich Region with the HAWC Observatory: Is HESS J1809-193 a Potential Hadronic PeVatron?
TeV Analysis of a Source-rich Region with the HAWC Observatory: Is HESS J1809-193 a Potential Hadronic PeVatron? Open
HESS J1809-193 is an unidentified TeV source, first detected by the High Energy Stereoscopic System (H.E.S.S.) collaboration. The emission originates in a source-rich region that includes several supernova remnants (SNRs) and pulsars inclu…
View article: TeV Analysis of a Source Rich Region with HAWC Observatory: Is HESS J1809-193 a Potential Hadronic PeVatron?
TeV Analysis of a Source Rich Region with HAWC Observatory: Is HESS J1809-193 a Potential Hadronic PeVatron? Open
HESS J1809-193 is an unidentified TeV source, first detected by the High Energy Stereoscopic System (H.E.S.S.) Collaboration. The emission originates in a source-rich region that includes several Supernova Remnants (SNR) and Pulsars (PSR) …
View article: Analysis of the Emission and Morphology of the Pulsar Wind Nebula Candidate HAWC J2031+415
Analysis of the Emission and Morphology of the Pulsar Wind Nebula Candidate HAWC J2031+415 Open
The first TeV gamma-ray source with no lower energy counterparts, TeV J2032+4130, was discovered by HEGRA. It appears in the third HAWC catalog as 3HWC J2031+415 and it is a bright TeV gamma-ray source whose emission has previously been re…
View article: Exploring the Coronal Magnetic Field with Galactic Cosmic Rays: The Sun Shadow Observed by HAWC
Exploring the Coronal Magnetic Field with Galactic Cosmic Rays: The Sun Shadow Observed by HAWC Open
Galactic cosmic rays (GCRs) are charged particles that reach the heliosphere almost isotropically in a wide energy range. In the inner heliosphere, the GCR flux is modulated by solar activity so that only energetic GCRs reach the lower lay…
View article: Search for decaying dark matter in the Virgo cluster of galaxies with HAWC
Search for decaying dark matter in the Virgo cluster of galaxies with HAWC Open
The decay or annihilation of dark matter particles may produce a steady flux of very-high-energy gamma rays detectable above the diffuse background. Nearby clusters of galaxies provide excellent targets to search for the signatures of part…
View article: Search for Joint Multimessenger Signals from Potential Galactic Cosmic-Ray Accelerators with HAWC and IceCube
Search for Joint Multimessenger Signals from Potential Galactic Cosmic-Ray Accelerators with HAWC and IceCube Open
The origin of high-energy galactic cosmic rays is yet to be understood, but some galactic cosmic-ray accelerators can accelerate cosmic rays up to PeV energies. The high-energy cosmic rays are expected to interact with the surrounding mate…
View article: Galactic Gamma-Ray Diffuse Emission at TeV Energies with HAWC Data
Galactic Gamma-Ray Diffuse Emission at TeV Energies with HAWC Data Open
Galactic gamma-ray diffuse emission (GDE) is emitted by cosmic rays (CRs), ultra-relativistic protons, and electrons, interacting with gas and electromagnetic radiation fields in the interstellar medium. Here we present the analysis of ter…