Search Results - "ESSEY, Warren"

A new interpretation of the gamma-ray observations of distant active galactic nuclei by Essey, Warren, Kusenko, Alexander

“…Gamma-ray telescopes have reported some surprising observations of multi-TeV photons from distant active galactic nuclei (AGN), which show no significant…”
Get full text

Determination of intergalactic magnetic fields from gamma ray data by Essey, Warren, Ando, Shin’ichiro, Kusenko, Alexander

“…► Intergalactic magnetic fields are between 0.01 and 30 femtogauss. ► The lower limit is independent of cosmic-ray production rate and spectrum. ► Data provide…”
Get full text

PeV neutrinos from intergalactic interactions of cosmic rays emitted by active galactic nuclei by Kalashev, Oleg E, Kusenko, Alexander, Essey, Warren

“…The observed very high energy spectra of distant blazars are well described by secondary gamma rays produced in line-of-sight interactions of cosmic rays with…”
Get full text

Role of Line-of-sight Cosmic-ray Interactions in Forming the Spectra of Distant Blazars in TeV Gamma Rays and High-energy Neutrinos by Essey, Warren, Kalashev, Oleg, Kusenko, Alexander, Beacom, John F

“…Active galactic nuclei (AGNs) can produce both gamma rays and cosmic rays. The observed high-energy gamma-ray signals from distant blazars may be dominated by…”
Get full text

Secondary photons and neutrinos from cosmic rays produced by distant blazars by Essey, Warren, Kalashev, Oleg E, Kusenko, Alexander, Beacom, John F

“…Secondary photons and neutrinos produced in the interactions of cosmic ray protons emitted by distant active galactic nuclei (AGN) with the photon background…”
Get full text

Understanding the spectrum of a distant blazar PKS 1424+240 and its implications by Essey, Warren, Kusenko, Alexander

“…We calculate the gamma-ray spectrum of a distant blazar, PKS 1424+240, located at redshift z⩾0.6035, where the optical depth to primary gamma rays of the…”
Get full text

TIME STRUCTURE OF GAMMA-RAY SIGNALS GENERATED IN LINE-OF-SIGHT INTERACTIONS OF COSMIC RAYS FROM DISTANT BLAZARS by PROSEKIN, ANTON, ESSEY, WARREN, Kusenko, Alexander, Aharonian, Felix

“…Blazars are expected to produce both gamma rays and cosmic rays. Therefore, observed high-energy gamma rays from distant blazars may contain a significant…”
Get full text

ON WEAK REDSHIFT DEPENDENCE OF GAMMA-RAY SPECTRA OF DISTANT BLAZARS by ESSEY, Warren, KUSENKO, Alexander

Get full text

TIME STRUCTURE OF GAMMA-RAY SIGNALS GENERATED IN LINE-OF-SIGHT INTERACTIONS OF COSMIC RAYS FROM DISTANT BLAZARS by PROSEKIN, Anton, ESSEY, Warren, KUSENKO, Alexander, AHARONIAN, Felix

Get full text

On the use of X-ray and γ-ray telescopes for identifying the origin of electrons and positrons observed by ATIC, Fermi, and PAMELA by Calvez, Antoine, Essey, Warren, Fairbairn, Malcolm, Kusenko, Alexander, Loewenstein, Michael

“…► X-ray data can clarify the origin of galactic positrons. ► Observations of dwarf spheroidals can help identify dark matter. ► Future instruments will have…”
Get full text

On the use of X-ray and [gamma]-ray telescopes for identifying the origin of electrons and positrons observed by ATIC, Fermi, and PAMELA by Calvez, Antoine, Essey, Warren, Fairbairn, Malcolm, Kusenko, Alexander, Loewenstein, Michael

“…X-ray and [gamma]-ray observations can help understand the origin of the electron and positron signals reported by ATIC, PAMELA, PPB-BETS, and Fermi. It…”
Get full text

The possibility of multi-TeV secondary gamma rays from GRB221009A by Kalashev, Oleg, Aharonian, Felix, Essey, Warren, Inoue, Yoshiyuki, Kusenko, Alexander

“…The brightest gamma ray burst (GRB) ever observed, GRB221009A, produced a surprisingly large flux of gamma rays with multi-TeV energies, which are expected to…”
Get full text

TeV gamma rays from blazars beyond z = 1 ? by Aharonian, Felix, Essey, Warren, Kusenko, Alexander, Prosekin, Anton

Get full text

Measurement of Intergalactic Magnetic and Photon Fields with Secondary Photons and Neutrinos by Essey, Warren James

“…Active galactic nuclei (AGN) can produce both gamma rays and cosmic rays. The observed high-energy gamma-ray signals from distant blazars may be dominated by…”
Get full text

Understanding the spectrum of a distant blazar PKS 1424+240 and its implications by Essey, Warren, Kusenko, Alexander

“…We calculate the gamma-ray spectrum of a distant blazar, PKS 1424+240, located at redshift z > 0.6035, where the optical depth to primary gamma rays of the…”
Get full text

On weak redshift dependence of gamma-ray spectra of distant blazars by Essey, Warren, Kusenko, Alexander

“…Astrophysical Journal Letters, 751, L11 (2012) Line-of-sight interactions of cosmic rays provide a natural explanation of the hard gamma-ray spectra of distant…”
Get full text

A new interpretation of the gamma-ray observations of active galactic nuclei by Essey, Warren, Kusenko, Alexander

“…Astropart.Phys.33:81-85,2010 Gamma-ray telescopes have reported some surprising observations of multi-TeV photons from distant active galactic nuclei (AGN),…”
Get full text

PeV neutrinos from intergalactic interactions of cosmic rays emitted by active galactic nuclei by Kalashev, Oleg E, Kusenko, Alexander, Essey, Warren

“…Phys. Rev. Lett. 111, 041103 (2013) The observed very high energy spectra of distant blazars are well described by secondary gamma rays produced in…”
Get full text

Measurement of Intergalactic Magnetic and Photon Fields with Secondary Photons and Neutrinos by Essey, Warren James

“…Active galactic nuclei (AGN) can produce both gamma rays and cosmic rays. The observed high-energy gamma-ray signals from distant blazars may be dominated by…”
Get full text

Determination of intergalactic magnetic fields from gamma ray data by Essey, Warren, Ando, Shin'ichiro, Kusenko, Alexander

“…Astroparticle Physics 35 (2011) 135 We report a measurement of intergalactic magnetic fields using combined data from Atmospheric Cherenkov Telescopes and…”
Get full text