Showing 2019 · astro-ph.HEShow all

34 papers · 2 filters

astro-ph.HE2019★ 18 cited

Simultaneous observations of the blazar PKS2155-304 from Ultra-Violet to TeV energies

H. E. S. S., Fermi, NuSTAR collaborations

The results of the first ever contemporaneous multi-wavelength observation campaign on the BL Lac object PKS2155-304 involving Swift, NuSTAR, Fermi-LAT and H.E.S.S. are reported. T…

astro-ph.HE2019★ 25 cited

H.E.S.S. and Fermi-LAT observations of PSR B1259-63/LS 2883 during its 2014 and 2017 periastron passages

H. E. S. S. Collaboration, H. Abdalla, R. Adam +222

PSR B1259-63/LS 2883 is a gamma-ray binary system consisting of a pulsar in an eccentric orbit around a bright Oe stellar-type companion star that features a dense circumstellar di…

astro-ph.HE2019★ 12 cited

Searches for neutrinos from cosmic-ray interactions in the Sun using seven years of IceCube data

IceCube Collaboration, M. G. Aartsen, M. Ackermann +358

Cosmic-ray interactions with the solar atmosphere are expected to produce particle showers which in turn produce neutrinos from weak decays of mesons. These solar atmospheric neutr…

astro-ph.HE2019★ 274 cited

A very-high-energy component deep in the Gamma-ray Burst afterglow

H. Abdalla R. Adam F. Aharonian F. Ait Benkhali E. O. Anguener M. Arakawa, C. Arcaro, C. Armand +219

Gamma-ray bursts (GRBs) are brief flashes of gamma rays, considered to be the most energetic explosive phenomena in the Universe. The emission from GRBs comprises a short (typicall…

astro-ph.HE2019★ 28 cited

H.E.S.S. detection of very-high-energy gamma-ray emission from the quasar PKS 0736+017

H. E. S. S. Collaboration, :, H. Abdalla +225

Flat-spectrum radio-quasars (FSRQs) are rarely detected at very-high-energies (VHE; E>100 GeV) due to their low-frequency-peaked SEDs. At present, only 6 FSRQs are known to emit VH…

astro-ph.HE2019★ 10 cited

Constraints on Neutrino Emission from Nearby Galaxies Using the 2MASS Redshift Survey and IceCube

IceCube Collaboration, M. G. Aartsen, M. Ackermann +354

The distribution of galaxies within the local universe is characterized by anisotropic features. Observatories searching for the production sites of astrophysical neutrinos can tak…

astro-ph.HE2019★ 450 cited

Time-integrated Neutrino Source Searches with 10 years of IceCube Data

IceCube Collaboration, M. G. Aartsen, M. Ackermann +357

This paper presents the results from point-like neutrino source searches using ten years of IceCube data collected between Apr.~6, 2008 and Jul.~10, 2018. We evaluate the significa…

astro-ph.HE2019★ 61 cited

Turbulence-Level Dependence of Cosmic-Ray Parallel Diffusion

P. Reichherzer, J. Becker Tjus, E. G. Zweibel +2

Understanding the transport of energetic cosmic rays belongs to the most challenging topics in astrophysics. Diffusion due to scattering by electromagnetic fluctuations is a key pr…

astro-ph.HE2019★ 32 cited

Four (Super)luminous Supernovae from the First Months of the ZTF Survey

R. Lunnan, Lin Yan, D. A. Perley +30

We present photometry and spectroscopy of four hydrogen-poor luminous supernovae discovered during the two-month science commissioning and early operations of the Zwicky Transient…

astro-ph.HE2019★ 12 cited

A Search for Neutrino Point-Source Populations in 7 Years of IceCube Data with Neutrino-count Statistics

IceCube Collaboration, M. G. Aartsen, M. Ackermann +357

The presence of a population of point sources in a dataset modifies the underlying neutrino-count statistics from the Poisson distribution. This deviation can be exactly quantified…

astro-ph.HE2019

A parameterized catalog of radio galaxies as ultra-high energy cosmic ray sources

Jörg P. Rachen, Björn Eichmann

Many attempts have been made to provide catalogs of potential sources of ultra-high energy cosmic ray (UHECR) particles based on various astronomical tracers, such as observed radi…

astro-ph.HE2019★ 1 cited

Studying the Temporal Variation of the Cosmic-Ray Sun Shadow Using IceCube Data

Frederik Tenholt, Julia Becker Tjus, Paolo Desiati

The shadowing effect of the Moon and Sun in TeV cosmic rays has been measured with high statistical significance by several experiments. Unlike particles from directions close to t…

astro-ph.HE2019★ 12 cited

H.E.S.S. Monitoring of PKS 2155-304 in 2015 and 2016

Alicja Wierzcholska, Michael Zacharias, Felix Jankowsky +2

PKS 2155-304 is one of the brightest blazar located in Southern Hemisphere, monitored with H.E.S.S. since the first light of the experiment. Here we report multiwavelength monitori…

astro-ph.HE2019★ 31 cited

A Search for MeV to TeV Neutrinos from Fast Radio Bursts with IceCube

M. G. Aartsen, M. Ackermann, J. Adams +354

We present two searches for IceCube neutrino events coincident with 28 fast radio bursts (FRBs) and one repeating FRB. The first improves upon a previous IceCube analysis -- search…

astro-ph.HE2019★ 15 cited

Search for PeV Gamma-Ray Emission from the Southern Hemisphere with 5 Years of Data from the IceCube Observatory

M. G. Aartsen, M. Ackermann, J. Adams +354

The measurement of diffuse PeV gamma-ray emission from the Galactic plane would provide information about the energy spectrum and propagation of Galactic cosmic rays, and the detec…

astro-ph.HE2019★ 86 cited

Search for Sources of Astrophysical Neutrinos Using Seven Years of IceCube Cascade Events

M. G. Aartsen, M. Ackermann, J. Adams +351

Low background searches for astrophysical neutrino sources anywhere in the sky can be performed using cascade events induced by neutrinos of all flavors interacting in IceCube with…

astro-ph.HE2019★ 12 cited

Velocity independent constraints on spin-dependent DM-nucleon interactions from IceCube and PICO

IceCube Collaboration, M. G. Aartsen, M. Ackermann +419

Adopting the Standard Halo Model (SHM) of an isotropic Maxwellian velocity distribution for dark matter (DM) particles in the Galaxy, the most stringent current constraints on thei…

astro-ph.HE2019★ 23 cited

Interpolation of turbulent magnetic fields and its consequences on diffusive cosmic ray propagation

L. Schlegel, A. Frie, B. Eichmann +2

Numerical simulations of the propagation of charged particles through magnetic fields solving the equation of motion often leads to the usage of an interpolation in case of discret…

astro-ph.HE2019★ 47 cited

Constraints on the emission region of 3C 279 during strong flares in 2014 and 2015 through VHE gamma-ray observations with H.E.S.S

H. E. S. S. Collaboration, H. Abdalla, R. Adam +224

The flat spectrum radio quasar 3C 279 is known to exhibit pronounced variability in the high-energy (MeVGeV) -ray band, which is continuously monitored with Fer…

astro-ph.HE2019★ 165 cited

Cosmic Ray Spectrum and Composition from PeV to EeV Using 3 Years of Data From IceTop and IceCube

IceCube Collaboration

We report on measurements of the all-particle cosmic ray energy spectrum and composition in the PeV to EeV energy range using three years of data from the IceCube Neutrino Observat…

astro-ph.HE2019★ 8 cited

Probing the pulsar population of Terzan 5 via spectral modeling

Hambeleleni Ndiyavala, Christo Venter, Tyrel J. Johnson +5

Terzan 5 is the only Galactic globular cluster that has plausibly been detected at very-high energies by the High Energy Stereoscopic System. It has an unexpectedly asymmetric very…

astro-ph.HE2019★ 45 cited

On the usefulness of existing Solar-wind models for pulsar timing corrections

C. Tiburzi, J. P. W. Verbiest, G. M. Shaifullah +15

Dispersive delays due to the Solar wind introduce excess noise in high-precision pulsar timing experiments, and must be removed in order to achieve the accuracy needed to detect, e…

astro-ph.HE2019★ 33 cited

H.E.S.S. and Suzaku observations of the Vela X pulsar wind nebula

H. E. S. S. Collaboration

Pulsar Wind Nebulae (PWNe) represent the most prominent population of Galactic very-high-energy gamma-ray sources and are thought to be an efficient source of leptonic cosmic rays.…

astro-ph.HE2019★ 16 cited

Upper Limits on Very-High-Energy Gamma-ray Emission from Core-Collapse Supernovae Observed with H.E.S.S

H. E. S. S. Collaboration, :, H. Abdalla +225

Young core-collapse supernovae with dense-wind progenitors may be able to accelerate cosmic-ray hadrons beyond the knee of the cosmic-ray spectrum, and this may result in measurabl…