Polarimetric and photometric observations of comet C/1995 01 (hale-bopp)

Conclusions  From the results of our observations, we can say the following: the polarization decreased and the brightness increased during the observations (Fig. 1). There is no definite relationship between the polarization parameters (P, θ ) and wavelength λ (U, B, V, R). The authors wish to thank L. G. Akhverdian for providing the photograph in Fig. 2. Translated from Astrofizika, Vol. 41, No. 2, pp. 311–315, April-June, 1998.