Search filters

List of works by Simon Swordy

A Multiwavelength View of the TeV Blazar Markarian 421: Correlated Variability, Flaring, and Spectral Evolution

scientific article published in the Astrophysical Journal

A New Measurement of Cosmic-Ray Composition at the Knee

scientific article published in the Astrophysical Journal

A Search for TeV Gamma‐Ray Emission from High‐peaked Flat‐Spectrum Radio Quasars Using the Whipple Air Cerenkov Telescope

scientific article published in the Astrophysical Journal

A Survey of Unidentified EGRET Sources at Very High Energies

scientific article published in the Astrophysical Journal

A new detector for the measurement of the energy spectrum of cosmic ray nuclei in the TeV region

A new search for primordial black hole evaporations using the Whipple gamma-ray telescope

scholarly article by E T Linton et al published 16 January 2006 in Journal of Cosmology and Astroparticle Physics

Approaching the Knee with Direct Measurements

article by E.S. Seo et al published January 2008 in Nuclear Physics, Section B, Proceedings Supplements

CREAM-Pushing the high energy frontier of directly measured cosmic rays

article by O. Ganel et al published September 2006 in European Physical Journal D

CREAM: 70 days of flight from 2 launches in Antarctica

article by E.S. Seo et al published November 2008 in Advances in Space Research

Constraints on the Very High Energy Emission from BL Lacertae Objects

scientific article published in the Astrophysical Journal

Cosmic Ray Positrons at High Energies: A New Measurement

scientific article published in Physical Review Letters

Cosmic ray reentrant electron albedo: High-Energy Antimatter Telescope balloon measurements from Fort Sumner, New Mexico

scholarly article

Cosmic-ray energetics and mass (CREAM) balloon experiment

article by E.S. Seo et al published January 2002 in Advances in Space Research

Cosmic-ray energetics and mass (CREAM) balloon project

scientific article

Cosmic-ray positrons: are there primary sources?

article by Stéphane Coutu et al published September 1999 in Astroparticle Physics

Cosmic-ray proton and helium spectra from the first CREAM flight

scientific article published in the Astrophysical Journal

Cosmic‐Ray Electrons and Positrons from 1 to 100 GeV: Measurements with HEAT and Their Interpretation

scientific article published in the Astrophysical Journal

Cutoff in the T[CLC]e[/CLC]V Energy Spectrum of Markarian 421 during Strong Flares in 2001

scientific article published in the Astrophysical Journal

Deployment of the VERITAS observatory

Design and performance in the first flight of the transition radiation detector and charge detector of the CREAM balloon instrument

article by Stephane Coutu et al published March 2007 in Nuclear Instruments and Methods in Physics Research

Design, Implementation, and Performance of CREAM Data Acquisition Software

Detection of T[CLC]e[/CLC]V Gamma Rays from the BL Lacertae Object 1ES 1959+650 with the Whipple 10 Meter Telescope

scientific article published in the Astrophysical Journal

Discovery of Spectral Variability of Markarian 421 at T[CLC]e[/CLC]V Energies

scientific article published in the Astrophysical Journal

Discovery of variability in the very high energy {gamma}-ray emission of 1ES 1218+304 with VERITAS

Discovery of very high energy gamma rays from PKS 1424+240 and multiwavelength constraints on its redshift

scientific article

Discovery of very high energy {gamma}-ray emission from the SNR G54.1+0.3

scholarly article

ERRATUM: "Veritas observations of a very high energy {gamma}-ray flare from the blazar 3C 66A" (2009, ApJ, 693, L104)

scholarly article published in Letters of the Astrophysical Journal

ERRATUM: “MULTI-WAVELENGTH OBSERVATIONS OF THE FLARING GAMMA-RAY BLAZAR 3C 66A IN 2008 OCTOBER” (2011, ApJ, 726, 43)

scientific article published in the Astrophysical Journal

Energy spectra, altitude profiles, and charge ratios of atmospheric muons

article by S. Coutu et al published 28 June 2000 in Physical Review D

Evidence for long-term gamma-ray and X-ray variability from the unidentified TeV source HESS J0632+057

First measurements of cosmic-ray nuclei at high energy with CREAM

article by S.P. Wakely et al published August 2008 in Advances in Space Research

High-energy Antimatter Telescope (HEAT): basic design and performance

scholarly article published 18 October 1996

Insights into the high-energy {gamma}-ray emission of Markarian 501 from extensive multifrequency observations in the Fermi era

scientific article published in the Astrophysical Journal

Measurement of the Cosmic-Ray Antiproton-to-Proton Abundance Ratio between 4 and 50 GeV

scientific article published in Physical Review Letters

Measurements of cosmic-ray secondary nuclei at high energies with the first flight of the CREAM balloon-borne experiment

article by H.S. Ahn et al published October 2008 in Astroparticle Physics

Measurements of the Cosmic-Ray Positron Fraction from 1 to 50 G[CLC]e[/CLC]V

scientific article published in the Astrophysical Journal

Multi-wavelength observations of the flaring gamma-ray blazar 3C 66A in 2008 October

scientific article published in the Astrophysical Journal

Multiwavelength observations of Markarian 421 in 2005-2006

scientific article published in the Astrophysical Journal

Multiwavelength observations of the blazar Markarian 421 in 2002 December and 2003 January

scholarly article

Multiwavelength observations of the very high energy blazar 1ES 2344+514

scholarly article

New Measurement of the Cosmic-Ray Positron Fraction from 5 to 15 GeV

scientific article published in Physical Review Letters

New measurement of the altitude dependence of the atmospheric muon intensity

article by J. J. Beatty et al published 12 November 2004 in Physical Review D

Observation of M87 at 400 GeV with the Whipple 10 Meter Telescope

scientific article published in the Astrophysical Journal

Observation of gamma-ray emission from the galaxy M87 above 250 GeV with VERITAS

scholarly article

Observation of transition radiation from relativistic heavy nuclei

scientific article published on 01 November 1990

Observations of the Unidentified TeV γ‐Ray Source TeV J2032+4130 with the Whipple Observatory 10 m Telescope

scientific article published in the Astrophysical Journal

Performance of CREAM Calorimeter: Results of Beam Tests

article by H.S. Ahn et al published January 2006 in Nuclear Physics, Section B, Proceedings Supplements

Performance of the HEAT spectrometer for cosmic ray electrons and positrons

article by Dietrich Müller et al published December 1995 in Nuclear Instruments and Methods in Physics Research

Preface. [to the 2nd VERITAS Symposium on TeV astrophysics of extragalactic sources, Chicago, 24-26 April 2003]

scholarly article

Radio imaging of the very-high-energy gamma-ray emission region in the central engine of a radio galaxy

scientific article published on 2 July 2009

Science capabilities of the VERITAS array of 10m imaging atmospheric Cerenkov gamma-ray detectors

Search for High‐Energy Gamma Rays from an X‐Ray–selected Blazar Sample

scientific article published in the Astrophysical Journal

Search for TeV Emissions from Pulsars in Binary Systems

scientific article published in the Astrophysical Journal

Silicon charge detector for the CREAM experiment

article by I.H. Park et al published January 2007 in Nuclear Instruments and Methods in Physics Research

Simultaneous multiwavelength observations of Markarian 421 during outburst

scientific article published in the Astrophysical Journal

Spectral energy distribution of Markarian 501: quiescent state versus extreme outburst

scientific article published in the Astrophysical Journal

Spectrum of Very High Energy Gamma‐Rays from the blazar 1ES 1959+650 during Flaring Activity in 2002

scientific article published in the Astrophysical Journal

TeV Gamma-Ray Observations of the Galactic Center

scientific article published in the Astrophysical Journal

TeV gamma-ray observations of the Perseus and Abell 2029 galaxy clusters

scientific article published in January 2006

The CREAM Calorimeter: Performance In Tests And Flights

article by M. H. Lee et al published 2006 in AIP Conference Proceedings

The Cosmic Ray Energetics And Mass (CREAM) instrument

article by H.S. Ahn et al published September 2007 in Nuclear Instruments and Methods in Physics Research

The Cosmic Ray Energetics and Mass (CREAM) experiment timing charge detector

scholarly article published 27 February 2003

The Cosmic Ray Energetics and Mass (CREAM) timing charge detector

article by H.S. Ahn et al published April 2009 in Nuclear Instruments and Methods in Physics Research

The Energy Spectra and Relative Abundances of Electrons and Positrons in the Galactic Cosmic Radiation

scientific article published in the Astrophysical Journal

The High-Energy Antimatter Telescope (HEAT): An instrument for the study of cosmic-ray positrons

article by S.W. Barwick et al published November 1997 in Nuclear Instruments and Methods in Physics Research

The June 2008 flare of Markarian 421 from optical to TeV energies

scientific article published in the Astrophysical Journal

The TeV Spectrum of H1426+428

scientific article published in the Astrophysical Journal

The composition of cosmic rays at the knee

article

The discovery of {gamma}-ray emission from the blazar RGB J0710+591

scholarly article

The first VERITAS telescope

article by J. Holder et al published July 2006 in Astroparticle Physics

VERITAS discovers TeV gamma rays from W Comae

scientific article published in January 2008

VERITAS discovers VHE gamma rays from BL Lac 1ES 0806+524

scientific article published in January 2008

VERITAS observations of gamma-ray bursts detected by Swift

VERITAS observations of the {gamma}-ray binary LS I +61 303

VERITAS upper limit on the very high energy emission from the radio galaxy NGC 1275

VERITAS: STATUS SUMMARY 2009

VERITAS: the Very Energetic Radiation Imaging Telescope Array System

scholarly article

VERITAS: the Very Energetic Radiation Imaging Telescope Array System

Veritas 2008-2009 monitoring of the variable gamma-ray source M 87

scholarly article

Very high energy observations of gamma-ray burst locations with the Whipple telescope

scientific article published in January 2007