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Featured researches published by H. A. Mayer-Hasselwander.


The Astrophysical Journal | 1983

Gamma-rays from atomic and molecular gas in the first galactic quadrant

F. Lebrun; K. Bennett; G. F. Bignami; Patrizia A. Caraveo; J. B. G. M. Bloemen; W. Hermsen; R. Buccheri; M. Gottwald; G. Kanbach; H. A. Mayer-Hasselwander

The fully samples Columbia 1/sup 0/ CO survey and the Berkeley H I survey are compared with the COS B gamma-ray survey. As a first step, the study is limited to the high-energy gamma-rays (Eapprox.300 MeV). It is found that a simple model, in which uniformly distributed cosmic rays interact with the interstellar gas, as traced by H I and CO, can account for almost all the observed gamma-rays. Furthermore, if the contribution from point sources to the gamma-ray flux is significant, these sources must have a galactic distribution similar to that of CO. The analysis permits calibration of the ratio between H/sub 2/ column density and integrated CO line intensity: N(H/sub 2/)/W/sub CO/ = (1-3) 10/sup 2/0 molecules cm/sup -2/ K/sup -1/ km/sup -1/ s.


The Astrophysical Journal | 1981

Second Cos

B. N. Swanenburg; K. Bennett; G. F. Bignami; R. Buccheri; Patrizia A. Caraveo; W. Hermsen; G. Kanbach; Giselher G. Lichti; J.-L. Masnou; H. A. Mayer-Hasselwander; J. Paul; B. Sacco; L. Scarsi; R. D. Wills


Astronomy and Astrophysics | 1983

B

R. Buccheri; B. Sacco; H. A. Mayer-Hasselwander; M.E. Ozel; J. B. G. M. Bloemen; K. Bennett; L. Scarsi; V. Boriakoff; G. F. Bignami; W. Hermsen; R. N. Manchester; J. Paul; G. Kanbach; J.-L. Masnou; Patrizia A. Caraveo; A. W. Strong


Astronomy and Astrophysics | 1986

Catalog of High-energy gamma-ray Sources

J. B. G. M. Bloemen; A. W. Strong; H. A. Mayer-Hasselwander; L. Blitz; R. S. Cohen; T. M. Dame; D. A. Grabelsky; P. Thaddeus; W. Hermsen; F. Lebrun


Astronomy and Astrophysics | 1987

Search for pulsed gamma-ray emission from radio pulsars in the COS-B data

J. Clear; K. Bennett; R. Buccheri; I. A. Grenier; W. Hermsen; H. A. Mayer-Hasselwander; B. Sacco


Astronomy and Astrophysics | 1984

The radial distribution of galactic gamma rays. III - The distribution of cosmic rays in the Galaxy and the CO-H2 calibration

J. B. G. M. Bloemen; K. Bennett; G. F. Bignami; L. Blitz; P. A. Caraveo; M. Gottwald; W. Hermsen; F. Lebrun; H. A. Mayer-Hasselwander; A. W. Strong


Astronomy and Astrophysics | 1982

A detailed analysis of the high energy gamma-ray emission from the Crab pulsar and nebula

H. A. Mayer-Hasselwander; G. Kanbach; K. Bennett; Giselher G. Lichti; G. F. Bignami; Patrizia A. Caraveo; R. Buccheri; F. Lebrun; J.-L. Masnou; W. Hermsen


Astronomy and Astrophysics | 1987

The radial distribution of galactic gamma rays. II: The distribution of cosmic-ray electrons and nuclei in the outer Galaxy

W. Hermsen; J. B. G. M. Bloemen; F. A. Jansen; K. Bennett; R. Buccheri; Apostolos Mastichiadis; H. A. Mayer-Hasselwander; A. W. Strong; M. E. Oezel; A. M. T. Pollock


Astronomy and Astrophysics | 1985

Large-scale distribution of galactic gamma radiation observed by COS-B

A. M. T. Pollock; K. Bennett; G. F. Bignami; J. B. G. M. Bloemen; R. Buccheri; P. A. Caraveo; W. Hermsen; G. Kanbach; F. Lebrun; H. A. Mayer-Hasselwander; A. W. Strong


Astronomy and Astrophysics | 1976

High-energy gamma-ray and hard X-ray observations of Cyg X-3

K. Bennett; Giselher G. Lichti; G. F. Bignami; Guido Boella; R. Buccheri; M. Gorisse; J. Paul; W. Hermsen; G. G. Kanbach; H. A. Mayer-Hasselwander

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W. Hermsen

National Institute for Space Research

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R. Buccheri

University of New Hampshire

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