Time Variability Detected in the Gamma-Ray Emission of 3C 273 by OSSE
作者： K. McNaron-Brown , W. N. Johnson , C. D. Dermer , J. D. Kurfess
DOI: 10.1086/310447
关键词:
摘要: We report results of a 3 week observation the quasar 3C 273 with Oriented Scintillation Spectrometer Experiment (OSSE) instrument on Compton Gamma Ray Observatory (CGRO). During between 1994 August 31 and September 20, exhibited variability timescales as short 3-4 days in 0.05-0.15 MeV energy range. This is shortest measured this The flux at 100 keV 2.40 ± 0.06 (×10-2 ph cm-2 s-1 MeV-1), which highest recorded for by OSSE 5 years monitoring nearly twice great previously peak 1991 June. While varied factor 1.7, no significant gamma-ray spectral evolution band was observed throughout viewing period. data full period are described better broken power law than single law, photon index Γ = 1.62 0.08 below break 300 keV, change ΔΓ 0.9+ 1.6−0.6. significantly lower 1 reported Johnson et al.
harvard.edu
sci-hub.st 参考文章(19)
K. Makishima, T. Kii, K. Hayashida, K. A. Pounds, M. J. L. Turner, K. Koyama, Y. Tanaka, G. C. Stewart, T. J.-L. Courvoisier, S. Takano, O. R. Williams, T. Ohashi, F. Makino, K. Nandra, H. Inoue, The X-ray emission of 3C 273. Monthly Notices of the Royal Astronomical Society. ,vol. 244, pp. 310- 321 ,(1990)
R. Staubert, T.J.-L. Courvoisier, H. Fink, M.-H. Ulrich, H. Brunner, S. Friedrich, K. Otterbein, Spectral variability of 3C 273 at soft X-rays. Symposium - International Astronomical Union. ,vol. 159, pp. 382- 382 ,(1994) , 10.1017/S0074180900175746
James L. Elliot, Stuart L. Shapiro, On the Variability of the Compact Nonthermal Sources The Astrophysical Journal. ,vol. 192, ,(1974) , 10.1086/181575
Charles D. Dermer, Neil Gehrels, Two Classes of Gamma-Ray--emitting Active Galactic Nuclei The Astrophysical Journal. ,vol. 447, pp. 103- ,(1995) , 10.1086/175859
R. J. Davis, S. C. Unwin, T. W. B. Muxlow, Large-scale superluminal motion in the quasar 3C273 Nature. ,vol. 354, pp. 374- 376 ,(1991) , 10.1038/354374A0
W. N. Johnson, C. D. Dermer, R. L. Kinzer, J. D. Kurfess, M. S. Strickman, K. McNaron-Brown, E. Jourdain, G. V. Jung, D. A. Grabelsky, W. R. Purcell, M. P. Ulmer, OSSE observations of 3C 273 The Astrophysical Journal. ,vol. 445, pp. 182- ,(1995) , 10.1086/175684
K. McNaron-Brown, W. N. Johnson, G. V. Jung, R. L. Kinzer, J. D. Kurfess, M. S. Strickman, C. D. Dermer, D. A. Grabelsky, W. R. Purcell, M. P. Ulmer, M. Kafatos, P. A. Becker, R. Staubert, M. Maisack, OSSE Observations of Blazars The Astrophysical Journal. ,vol. 451, pp. 575- 584 ,(1994) , 10.1086/176245
B. N. SWANENBURG, K. BENNETT, G. F. BIGNAMI, P. CARAVEO, W. HERMSEN, G. KANBACH, J. L. MASNOU, H. A. MAYER-HASSELWANDER, J. A. PAUL, B. SACCO, L. SCARSI, R. D. WILLS, COS B observation of high-energy γ radiation from 3C273 Nature. ,vol. 275, pp. 298- 298 ,(1978) , 10.1038/275298A0
W. N. Johnson, R. L. Kinzer, J. D. Kurfess, M. S. Strickman, W. R. Purcell, D. A. Grabelsky, M. P. Ulmer, D. A. Hillis, G. V. Jung, R. A. Cameron, The Oriented Scintillation Spectrometer Experiment: Instrument Description Astrophysical Journal Supplement Series. ,vol. 86, pp. 693- 712 ,(1993) , 10.1086/191795
F. A. PRIMINI, B. A. COOKE, C. A. DOBSON, S. K. HOWE, A. SCHEEPMAKER, W. A. WHEATON, W. H. G. LEWIN, W. A. BAITY, D. E. GRUBER, J. L. MATTESON, L. E. PETERSON, HEAO 1 observations of high-energy X rays from 3C273 Nature. ,vol. 278, pp. 234- 235 ,(1979) , 10.1038/278234A0