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Your search keyword '"Bignami, G. F."' showing total 12 results
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12 results on '"Bignami, G. F."'

3. 4U0241+61 - A luminous low-redshift QSO

Author

Apparao, K. M. V, Bignami, G. F, Maraschi, L, Helmken, H, Margon, B, Hjellming, R, Bradt, H. V, and Dower, R. G

Subjects
Astrophysics
Abstract

The faint (1.8 micro Jy, 2-11 keV) X-ray QSO 4U0241+61 is considered in terms of its celestial position (galactic latitude = +2.4 plus or minus 30 sec), luminosity (M sub v = -25.8 plus or minus 1.8), redshift (z = 0.0438), and radio emission (0.2-0.5 Jy). Counting rates in two energy channels are presented, and found comparable to the Type 1 Seyfert 3C120. Spectrophotometric calibration to an approximately 8 A resolution was also achieved. Attention is given to the close relation between X-ray emitting QSOs and Seyferts.

Published
1978
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10. COS B observation of high-energy γ radiation from 3C273

Author

SWANENBURG, B. N., primary, BENNETT, K., additional, BIGNAMI, G. F., additional, CARAVEO, P., additional, HERMSEN, W., additional, KANBACH, G., additional, MASNOU, J. L., additional, MAYER-HASSELWANDER, H. A., additional, PAUL, J. A., additional, SACCO, B., additional, SCARSI, L., additional, and WILLS, R. D., additional

Published
1978
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11. New high energy γ-ray sources observed by COS B

Author

HERMSEN, W., primary, SWANENBURG, B. N., additional, BIGNAMI, G. F., additional, BOELLA, G., additional, BUCCHERI, R., additional, SCARSI, L., additional, KANBACH, G., additional, MAYER-HASSELWANDER, H. A., additional, MASNOU, J. L., additional, PAUL, J. A., additional, BENNETT, K., additional, HIGDON, J. C., additional, LICHTI, G. G., additional, TAYLOR, B. G., additional, and WILLS, R. D., additional

Published
1977
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