Publications of Henric Krawczynski

Publications In Scientific Journals (65 Papers)

• "The Off-Axis Galaxy Cluster Merger Abell 115"
  K. Gutierrez, H. Krawczynski, 2004, ApJ, in press [astro-ph/0312454].

• "A Search for TeV Gamma-Ray Emission from High-peaked Flat-Spectrum Radio Quasars Using the Whipple Air Cerenkov Telescope"
  A. D. Falcone, I. H. Bond, P. J. Boyle, et al. (including H. Krawczynski), 2004, ApJ, 613, 710.

• "Observations of M87 at 400 GeV with the Whipple 10 Meter Telescope"
  S. Le Bohec, H. M. Badran, I. H. Bond, et al. (including H. Krawczynski), 2004, ApJ, 610, L156.

• "TeV Gamma-Ray Observations of the Galactic Center"
  K. Kosack, H. M. Badran, I. H. Bond , et al. (including H. Krawczynski), 2004, ApJ, 608, L97.

• "Constraints on the Very High Energy Emission from BL Lacertae Objects"
  D. Horan, H. M. Badran, I. H. Bond, et al. (including H. Krawczynski), 2004, ApJ, 603, 51.

• "Search for High Energy Gamma Rays from an X-Ray Selected Blazar Sample"
  I. de la Calle Perez, I. H. Bond, S. M. Bradbury, et al. (including H. Krawczynski), 2003, ApJ, 599, 909.

• "VERITAS: the Very Energetic Radiation Imaging Telescope Array System "
  F. Krennrich, I. H. Bond, P. J. Boyle, et al.\ (including H. Krawczynski), 2004, New Astronomy Reviews, 48, 345.

• "Multiwavelength Observations of Strong Flares From the TeV-Blazar 1ES 1959+650"
  H. Krawczynski, S. B. Hughes, D. Horan, et al., 2004, ApJ, 601, 151.

• "TeV Blazars - Observations and Models"
  H. Krawczynski, 2004, New Astronomy Reviews, 48, 367.

• "Thermal and Non-thermal Plasmas in the Galaxy Cluster 3C 129"
  H. Krawczynski, D. E. Harris, R. Grossman, W. Lane, N. Kassim, A.G. Willis, 2003, MNRAS, 345, 1255.

• "Coordinated Multiwavelength Observations of BL Lacertae in 2000"
  M. Boettcher, A. P. Marscher, M. Ravasio, et al. (including H. Krawczynski), ApJ, 2003, 596, 847.

• "Search for TeV gamma ray emission from the Andromeda galaxy"
  F. A. Aharonian, A. G. Akhperjanian, M. Beilicke, et al. (including H. Krawczynski), A&A, 2003, 400, 153.

• "The optical system of the H.E.S.S. imaging atmospheric Cherenkov telescopes, Part I: layout and components of the system"
  K. Bernloehr, O. Carrol, R. Cornils, et al. (including H. Krawczynski), Astropart. Phys, 2003, 20, 111.

• "The optical system of the H.E.S.S. imaging atmospheric Cherenkov telescopes, Part II: mirror alignment and point spread function"
  R. Cornils, S. Gillessen, I. Jung et al. (including H. Krawczynski), Astropart. Phys, 2003, 20, 129.

• "Detection of TeV Gamma Rays from the BL Lacertae Object 1ES 1959+650 with the Whipple 10 Meter Telescope"
  J. Holder, I.H. Bond, P.J. Boyle, et al. (including H. Krawczynski), 2003, ApJ, 583, L9.

• "A search for TeV gamma-ray emission from SNRs, pulsars and unidentified GeV sources in the Galactic plane in the longitude range between -2 deg and 85 deg"
  F. A. Aharonian, A. G. Akhperjanian, M. Beilicke, et al. (including H. Krawczynski), A&A, 2002, 395, 803.

• "Time Dependent Modeling of the Markarian 501 X-ray and TeV Gamma-Ray Data Taken During March and April, 1997"
  H. Krawczynski, P.S. Coppi, F.A. Aharonian, 2002, MNRAS, 336, 721.

• "Spectroscopic Deprojection-Analysis of Chandra Data of the Galaxy Cluster 3C 129"
  H. Krawczynski, 2002, ApJ, 569, L27.

• "X-Ray Detection of the Inner Jet in the Radio Galaxy 3C 129"
  D.E. Harris, H. Krawczynski, G.B. Taylor, 2002, ApJ, 578, 60.

• "X-ray Emission Processes in Radio Jets"
  D.E. Harris, H. Krawczynski, 2002, ApJ, 565, 244.

• "A search for TeV gamma-ray emission from SNRs, pulsars and unidentified GeV sources in the Galactic plane in the longitude range between -2 deg and 85 deg"
  Aharonian, F., Akhperjanian, A., Beilicke, M., et al. (including H. Krawczynski), 2002, A&A, 395, 803.

• "Variations of the TeV energy spectrum at different flux levels of Mkn 421 observed with the HEGRA system of Cherenkov telescopes"
  Aharonian, F., Akhperjanian, A., Beilicke, M., et al. (including H. Krawczynski), 2002, A&A, 393, 89.

• "Search for point sources of gamma radiation above 15 TeV with the HEGRA AIROBICC array"
  F. Aharonian, A. Akhperjanian, J.A. Barrio, et al. (including H. Krawczynski), 2002, A&A, 390, 39.

• "TeV gamma rays from the blazar H 1426+428 and the diffuse extragalactic background radiation"
  F. Aharonian, A. Akhperjanian, J. Barrio, et al. (including: H. Krawczynski) 2002, A&A, 384, L23.

• "Limits on the TeV flux of diffuse gamma rays as measured with the HEGRA air shower array"
  F. Aharonian, A. Akhperjanian, J.A. Barrio, et al. (including H. Krawczynski), 2002, Astroparticle Physics, 17, 459.

• "Simultaneous X-Ray and TeV Gamma-Ray Observations of the TeV Blazar Markarian 421 during February and May 2000"
  H. Krawczynski, R. Sambruna, A. Kohnle, P.S. Coppi, and The HEGRA Collaboration (F.A. Aharonian et al.), 2001, ApJ, 559, 187.

• "The TeV Energy Spectrum of Mkn 501 Measured with the Stereoscopic Telescope System of HEGRA during 1998 and 1999"
  F. Aharonian, A. Akhperjanian, J. Barrio, et al. (corresponding author: H. Krawczynski) 2001, ApJ, 546, 898.

• "An unidentified TeV source in the vicinity of Cygnus OB2"
  F.A. Aharonian, A.G. Akhperjanian, M. Beilicke, et al. (including H. Krawczynski) 2001, A&A 393, L37.

• "A search for gamma-ray emission from the Galactic plane in the longitude range between 37 Deg and 43 Deg"
  F.A. Aharonian, A.G. Akhperjanian, J.A. Barrio, et al. (including H. Krawczynski) 2001, A&A 375, 1008.

• "A study of Tycho's SNR at TeV energies with the HEGRA CT-System"
  F.A. Aharonian , A.G. Akhperjanian , J.A. Barrio, et al. (including H. Krawczynski) 2001, A&A, 373, 292.

• "Evidence for TeV gamma ray emission from Cassiopeia A"
  F.A. Aharonian , A.G. Akhperjanian , J.A. Barrio, et al. (including H. Krawczynski) 2001, A&A, 370, 112

• "Reanalysis of the high energy cutoff of the 1997 Mkn 501 TeV energy spectrum"
  F. Aharonian, A. Akhperjanian, J. Barrio, et al. (including: H. Krawczynski) 2001, A&A, 366, 62.

• "Search for a TeV gamma-ray halo of Mkn 501"
  F. Aharonian, A. Akhperjanian, J. Barrio, et al. (including: H. Krawczynski) 2001, A&A, 366, 746.

• "Rejection of the Hypothesis That Markarian 501 TeV Photons Are Pure Bose-Einstein Condensates"
  F. Aharonian, A. Akhperjanian, J. Barrio, et al. (including H. Krawczynski) 2000, ApJ, 543, L39.

• "Complex Spectral Variability from Intensive Multiwavelength Monitoring of Mrk421 in 1998"
  T. Takahashi, J. Kataoka, G. Madejski, et al. (including H. Krawczynski) 2000, ApJ, 542, L105.

• "The Energy Spectrum of TeV Gamma Rays from the Crab Nebula as Measured by the HEGRA System of Imaging Air Cerenkov Telescopes"
  F.A. Aharonian, A.G. Akhperjanian, J.A. Barrio, et al. (including H. Krawczynski) 2000, ApJ, 539, 317.

• "Correlated Intense X-Ray and TeV Activity of Markarian 501 in 1998 June"
  R. M. Sambruna ,F. A. Aharonian, H. Krawczynski, et al. 2000, ApJ, 538, 127.

• "Optimizing the angular resolution of the HEGRA telescope system to study the emission region of VHE gamma rays in the Crab Nebula"
  F.A. Aharonian , A.G. Akhperjanian , J.A. Barrio, et al. (including H. Krawczynski) 2000, A&A, 361, 1073.

• "Energy spectrum and chemical composition of cosmic rays between 0.3 and 10 PeV determined from the Cherenkov-light and charged-particle distributions in air showers"
  F. Arqueros , J.A. Barrio , K. Bernlöhr, et al. (including H. Krawczynski) 2000, A&A, 359, 682.

• "HEGRA search for TeV emission from BL Lacertae objects"
  F.A. Aharonian , A.G. Akhperjanian , J.A. Barrio, et al. (including H. Krawczynski) 2000, A&A, 353, 847.

• "X-ray/TeV-gamma-ray observations of several strong flares of Mkn 501 during 1997 and implications"
  H. Krawczynski, P.S. Coppi, T. Maccarone, F.A. Aharonian 2000, A&A, 353, 97.

• "On the optimum spacing of stereoscopic imaging atmospheric Cherenkov telescopes"
  W. Hofmann, G. Hermann, A. Konopelko, et al. (including H. Krawczynski) 2000, Astropart. Phys., 13, 253.

• "Improved energy resolution for VHE gamma-ray astronomy with systems of Cherenkov telescopes"
  W. Hofmann, H. Lampeitl, A. Konopelko, H. Krawczynski 2000, Astropart. Phys., 12, 207.

• "Observations of Mkn 421 during 1997 and 1998 in the energy range above 500 GeV with the HEGRA stereoscopic Cherenkov telescope system"
  F.A. Aharonian, A.G. Akhperjanian, M. Andronache, et al. (corresponding author: H. Krawczynski) 1999, A&A, 350, 757.

• "The temporal characteristics of the TeV -emission from Mkn 501 in 1997, II. Results from HEGRA CT1 and CT2"
  F.A. Aharonian , A.G. Akhperjanian , J.A. Barrio, et al. (including H. Krawczynski) 1999, A&A, 349, 29.

• "The time averaged TeV energy spectrum of Mkn 501 of the extraordinary 1997 outburst as measured with the stereoscopic Cherenkov telescope system of HEGRA"
  F.A. Aharonian , A.G. Akhperjanian , J.A. Barrio, et al. (corresponding author: H. Krawczynski) 1999, A&A, 349, 11.

• "Phase-resolved TeV gamma-ray characteristics of the Crab and Geminga pulsars"
  F.A. Aharonian , A.G. Akhperjanian , J.A. Barrio, et al. (including H. Krawczynski) 1999, A&A, 346, 913.

• "The temporal characteristics of the TeV gamma-radiation from Mkn 501 in 1997, I. Data from the stereoscopic imaging atmospheric Cherenkov telescope system of HEGRA"
  F.A. Aharonian , A.G. Akhperjanian , J.A. Barrio, et al. (corresponding author: H. Krawczynski) 1999, A&A, 342, 69.

• "Comparison of techniques to reconstruct VHE gamma-ray showers from multiple stereoscopic Cherenkov images"
  W. Hofmann, I. Jung, A. Konopelko, H. Krawczynski, H. Lampeitl, G. Puehlhofer 1999, Astropart. Phys., 12, 135.

• "TeV gamma-ray observations of the Crab and MKN 501 during moonshine and twilight"
  D. Kranich, R. Mirzoyan, D. Petry, et al. (including H. Krawczynski) 1999, Astropart. Phys., 12, 65.

• "The time structure of Cherenkov images generated by TeV gamma-rays and by cosmic rays"
  M. Heß, K. Bernlöhr, A. Daum, et al. (including H. Krawczynski) 1999, Astropart. Phys., 11, 363.

• "Performance of the stereoscopic system of the HEGRA imaging air Cerenkov telescopes: Monte Carlo simulations and observations"
  A. Konopelko, M. Hemberger, F. Aharonian, et al. (including H. Krawczynski) 1999, Astropart. Phys., 10, 275.

• "Measurement of the radial distribution of Cherenkov light generated by TeV gamma-ray air showers"
  F. Aharonian, A. Akhperjanian, J. Barrio, et al. (including H. Krawczynski) 1999, Astropart. Phys., 10, 21.

• "The Cosmic Ray Proton Spectrum determined with the Imaging Atmospheric Cherenkov-Technique"
  F. Aharonian, A. Akhperjanian, J. Barrio, et al. (including H. Krawczynski) 1999, Phys. Rev. D59, 092003.

• "Search for gamma-ray bursts above 20 TeV with the HEGRA AIROBICC
  Cherenkov array "
  L. Padilla, B. Funk, H. Krawczynski, et al. 1998, A&A, 337, 43.

• "Measurement of the flux, spectrum, and variability of TeV Gamma-rays from MKN 501 during a state of high activity"
  F. Aharonian, A. G. Akhperjanian, J. A. Barrio, et al. (including H. Krawczynski) 1997, A&A, 327, L5.

• "Detection of Gamma-rays above 1.5 TeV from MKN 501"
  S.M. Bradbury, T. Deckers, D. Petry, et al. (including H. Krawczynski) 1997, A&A, 320, 5.

• "First results on the performance of the HEGRA IACT array"
  A. Daum, G. Hermann, M. Hess, et al. (including H. Krawczynski) 1997, Astropart. Phys., 8, 1.

• "Search for very high energy gamma radiation from the radio bright region DR4 of the SNR G78.2+2.1"
  C. Prosch, E. Feigl, R.L. Plaga, et al. (including H. Krawczynski) 1996, A&A, 314, 275.

• "Detection of VHE Gamma-rays from MKN 421 with the HEGRA Cherenkov Telescopes"
  D. Petry, S. M. Bradbury, A. Konopelko, et al. (including H. Krawczynski) 1996, A&A, 311, 13.

• "Detection of gamma rays above 1 TeV from the Crab Nebula by the second HEGRA imaging atmospheric Cherenkov telescope at La Palma"
  A. Konopelko, F. Aharonian, A. Akhperjanian, et al. (including H. Krawczynski) 1996, Astropart. Phys., 4, 199.

• "An optimized method for the reconstruction of the direction of air showers for scintillator arrays"
  H. Krawczynski, J. Prahl, F. Arqueros, et al. 1996, NIMA 383, 431.

• "Design and performance of the lead-concrete Geiger tower array within the HEGRA experiment"
  W. Rohde, K. H. Becker, K. Daum, et al. (including H. Krawczynski) 1996, NIMA 378, 399.

• "Search for Isotropic Gamma Radiation in the Cosmological Window between 65-TeV and 200-Tev"
  A. Karle, S. Martinez, R. Plaga, et al. (including H. Krawczynski) 1995, Phys. Lett. B, 347, 161.

• "A Search for Gamma Radiation above 24-TeV Energy from Cosmic Point Sources"
  A. Karle, F. Arqueros, K.H. Becker, et al. (including H. Krawczynski) 1995, Astropart. Phys., 4, 1.

Selected Conference Contributions (13 Papers)

• "Thick CZT Detectors for Space-Borne X-ray Astronomy"
  H. Krawczynski, I. Jung, J. Perkins, A. Burger, M. Groza, SPIE Invited Contribution, Denver, CO, August 2004, 49, 5540, 13.01, 2004, astro-ph/0410077.

• "Characterizing IMARAD CZT Detectors with Time Resolved Anode and Cathode Signals"
  J. S. Perkins, H. Krawczynski, P. Dowkontt, Proceedings of the 13th International Workshop on Room-Temperature Semiconductor X- and Gamma-Ray Detectors, IEEE Meeting, Portland (Or), 2003, astro-ph/0310910.

• "Control Software for the VERITAS Cherenkov Telescope System"
  H. Krawczynski, M. Olevitch, G. Sembroski, K. Gibbs, Proceedings of the 28th International Cosmic Ray Conference Japan, 2003, astro-ph/0306194.

• "Brightness Discontinuities in the Northern Sub-Cluster of Abell 115"
  K. Gutierrez, H. Krawczynski, D. Harris, Proceedings of the Conference ``Cooling Flows in Galaxies and Clusters of Galaxies'', Charlottesville (Va), 2003, in press.

• "X-Ray and Radio Observations of the Galaxy Cluster 3C 129"
  H. Krawczynski, D.E. Harris, R. Grossman, W. Lane, N. Kassim, A.G. Willis, 2003, 34th COSPAR Scientific Assembly Houston Texas, USA

• "Extended X-ray Emission From The Radio Galaxy 3C 390.3"
  H. Krawczynski, S. Wagner, 2001, In Procs.: "Gamma 2001" (Baltimore, MD, April 2001), AIP 587, 261.

• "Recent Mkn 501 and Mkn 421 Results from the Stereoscopic Cherenkov Telescope System of HEGRA"
  H. Krawczynski for the HEGRA Collaboration 2001, In Procs.: "Gamma 2000" (Heidelberg, Germany, June 2000), AIP 558, 639.

• "An X-ray/TeV Gamma-ray study of Mkn 501 during its extraordinary outburst of 1997"
  H. Krawczynski, P.S. Coppi, T. Maccarone, F.A. Aharonian 2000, In Procs.: "X-ray Astronomy '999: Stellar Endpoints, AGNs, and the Diffuse X-ray Background" (Bologna, Italy, September 1999), AIP 599, 694.

• "TeV/X-ray observations of Mkn 501 during 1997 and 1998"
  H. Krawczynski, F.A. Aharonian for the HEGRA collaboration, R.M. Sambruna, L. Chou, P.S. Coppi, C.M. Urry 2000, In Procs.: "The 5th Compton Symposium" (Portsmouth, U.S.A., September 1999).

• "Study of the TeV Emission from Mkn 501 with the Stereoscopic Cherenkov Telescope System of HEGRA"
  H. Krawczynski for the HEGRA Collaboration, 1998, In Procs.: "Turku Conference on the BL Lac Phenomenon" (Turku, Finland, June 1998), ed. L. Takalo, ASP Conference Series, p. 227.

• "Search for TeV Counterparts of Gamma-Ray Bursts with the HEGRA Experiment"
  H. Krawczynski for the HEGRA collaboration, 1996, In Procs.: "The 10th International School Of Cosmic-ray Astrophysics" (Erice, Italy, June 1996), World Scientific, p. 135.

• "Search for TeV counterparts of BATSE gamma ray bursts with the HEGRA air shower arrays"
  H. Krawczynski, J. Prahl , D. Schmele, et al. 1996, In Procs.: "The 3rd Huntsville Symposium on GRB" (Huntsville AL, U.S.A., Oct 1995), eds.: C. Kouveliotou, M. F. Briggs, G. J. Fishman. AIP Conf. Proc. 384, p. 656.

Other Publications

• "Der Kosmos im Licht von Gamma-Strahlung sehr hoher Energie"
  H. Krawzcynski, A. Kohnle, G. Heinzelmann, H.J. Völk, in "Phys. Blätter" 2000, vol. 56, Nr.3, pp. 47-52.