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  • Ultraviolet observations of selected astronomical sources [microform] : International Ultraviolet Explorer Observing Program : final technical report / principal investigator, Jules P. Halpern.

    • Text
    • New York, N.Y. : Columbia Astrophysics Laboratory, Departments of Astronomy and Physics, Columbia University ; Greenbelt, MD : National Aeronautics and Space Administration, Goddard Space Flight Center, [1988]
    • 1988

  • Multiwavelength observations of unidentified high energy gamma-ray sources [microform] : combined annual status report & final technical report for NAG 5-2051 / prepared by Columbia Astrophysics Laboratory, Departments of Astronomy and Physics, Columbia University ; principal investigator: Jules P. Halpern.

    • Text
    • [Washington, DC : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1993]
    • 1993

  • ROSAT observation program [microform] / Jules P. Halpern.

    • Text
    • [Washington, D.C.] : National Aeronautics and Space Administration ; [Springfield, Va. : National Technical Information Service, distributor, 1995]
    • 1995

  • International ultraviolet explorer observing program, ninth episode [microform] : ultraviolet observations of selected astronomical sources : semiannual status report / principal investigator, Jules P. Halpern.

    • Text
    • [Washington, D.C. : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1987]
    • 1987

  • Multiwavelength observations of unidentified high energy gamma-ray sources [microform] : annual status report for NAG 5-2051 / prepared by Columbia Astrophysics Laboratory, Departments of Astronomy and Physics, Columbia University ; principal investigator, Jules P. Halpern.

    • Text
    • [Washington, D.C.] : National Aeronautics and Space Administration ; [Springfield, Va. : National Technical Information Service, distributor, 1995]
    • 1995

  • Diffuse emission and pathological Seyfert spectra [microform] : National Aeronuatics and Space Administration ROSAT annual status report for NAG 5-1935 / prepared by Columbia Astrophysics Laboratory, Departments of Astronomy and Physics, Columbia University ; principal investigator, Jules P. Halpern.

    • Text
    • [Washington, D.C.] : National Aeronautics and Space Administration ; [Springfield, Va. : National Technical Information Service, distributor, 1995]
    • 1995

  • The Geminga pulsar [microform] : soft X-Ray variability and an EUVE observation / Jules P. Halpern, Christopher Martin, and Herman L. Marshall.

    • Text
    • [Washington, DC : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1996]
    • 1996

  • EGRET sources at intermediate galactic latitude [microform] / principal investigator, Jules P. Halpern.

    • Text
    • [Washington, DC : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1996]
    • 1996

  • Timing the Geminga pulsar with high-energy gamma-rays [microform] : final technical report for NAG5-2051 / submitted by The Trustees of Columbia University ; prepared by Columbia Astrophysics Laboratory, Departments of Astronomy and Physics, Columbia University ; principal investigator, Jules P. Halpern.

    • Text
    • [Washington, DC?] : National Aeronautics and Space Administration, Compton Gamma-Ray Observatory ; [Springfield, Va. : National Technical Information Service, distributor, 1997]
    • 1997

  • ROSAT [microform] : final technical report for NAG5-1935 / submitted by the Trustees of Columbia University in the City of New York ; prepared by Columbia Astrophysics Laboratory, Departments of Astronomy and Physics, Columbia University ; principal investigator, Jules P. Halpern.

    • Text
    • [Washington, DC] : National Aeronautics and Space Administration ; [Springfield, Va. : National Technical Information Service, distributor, 1998]
    • 1998

  • "Monitoring MRK 509 [microform] : the origin of the reprocessor" and "Broad band X-ray spectrum of narrow line Seyfert 1 AKN 564" / submitted by the Trustees of Columbia University in the City of New York ; prepared by Columbia Astrophysics Laboratory, Departments of Astronomy and Physics, Columbia University ; principal investigators, Jules P. Halpern & Karen M. Leighly.

    • Text
    • [Washington, DC : National Aeronautics and Space Administration ; Springfield, Va. : National Technical Information Service, distributor, 1998]
    • 1998

  • Detection of [Ni II] [lambda]7378 in six seyfert galaxies [microform] / J.P. Halpern, J.B. Oke.

    • Text
    • [Washington, D.C. : National Aeronautics and Space Administration, 1985?]
    • 1985

  • Variable spectra of active galaxies : final technical report / prepared by Jules P. Halpern.

    • Text
    • Marshall Space Flight Center, AL : National Aeronautics and Space Administration, George C. Marshall Space Flight Center, [1988]
    • 1988
    • 1 Resource

    Available Online

    https://purl.fdlp.gov/GPO/gpo31721

  • Variable spectra of active galaxies [microform] : final technical report / prepared by Jules P. Halpern.

    • Text
    • Marshall Space Flight Center, AL : National Aeronautics and Space Administration, George C. Marshall Space Flight Center, [1988]
    • 1988

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