4 papers
Wind-wind collision in the Carinae binary system II: Constrains to the binary orbital parameters from radio emission near periastron passage
Z. Abraham, D. Falceta-Goncalves, T. P. Dominici +2
In this paper we use the 7 mm and 1.3 mm light curves obtained during the 2003.5 low excitation phase of the eta Carinae system to constrain the possible parameters of the binary o…
Millimeter-wave emission during the 2003 low excitation phase of eta Carinae
Z. Abraham, D. Falceta-Goncalves, T. P. Dominici +5
In this paper we present observations of eta Carinae in the 1.3 mm and 7 mm radio continuum, during the 2003.5 low excitation phase. The expected minimum in the light curves was co…
Long-term optical variability of the blazars PKS 2005-489 and PKS 2155-304
T. P. Dominici, Z. Abraham, R. Teixeira +1
We present optical light curves for the period 1996-2000, of two of the brightest known EGRET BL Lac objects: PKS 2005-489 and PKS 2155-304, the latter also one of the few known Te…
Microvariability in the optical polarization of 3C279
I. Andruchow, S. A. Cellone, G. E. Romero +2
We present results of a microvariability polarization study in the violently variable quasar 3C279. We have resolved the polarization curves in the V band for this object down to t…