CGRO, Radio and Optical Observations of the Quasar NRAO 140

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dc.creatorMaisack, M.
dc.creatorStaubert, R.
dc.creatorOtterbein, K.
dc.creatorWitzel, A.
dc.creatorWagner, S. J.
dc.creatorHeines, A.
dc.date1996-08-30
dc.date.accessioned2026-07-07T02:21:50Z
dc.date.available2026-07-07T02:21:50Z
dc.descriptionWe report on Compton Gamma Ray Observatory (CGRO), radio and optical observations of the radio-loud, superluminal quasar NRAO 140. The source is not detected (at a significance of greater than 3 sigma) by any of the CGRO instruments OSSE, Comptel and EGRET. Radio observations simultaneous to the OSSE observation and optical monitoring over three-monthly intervals show no signs of extraordinary behaviour when compared to previous observations. We demonstrate that the CGRO non-detections do not require a spectral break at hard X-rays, but can be explained by a steep spectrum in the MeV range comparable to that of 3C273.
dc.descriptionto appear in A&AS, Proc. of 3rd Compton Symposium, A&A Latex
dc.identifierhttps://arxiv.org/abs/astro-ph/9609002
dc.identifierhttp://arxiv.org/abs/astro-ph/9609002
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/10653
dc.subjectAstrophysics
dc.titleCGRO, Radio and Optical Observations of the Quasar NRAO 140
dc.typetext

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