Spin periodicity measurements of white dwarfs hosted in southern hard X-ray Intermediate Polar candidates

ANDRUCHOW, I.; MASETTI, N.; DE MARTINO, D.; CELLONE, S. A.; MASON, E.; BONNET-BIDAUD, J.-M.

Ciudad Autónoma de Buenos Aires, Argentina

Workshop; High Energy Phenomena in Relativistic Outflows II; 2009

Thanks to the combination of hard X-ray data afforded with the INTEGRAL satellite and optical spectroscopy at various telescopes, a number of new, possibly magnetic, Cataclysmic Variables (CVs) has been recently discovered. We here report on the preliminary analysis of B-band optical photometry performed with the 2.15m “Jorge Sahade” telescope at CASLEO (Argentina) on 5 CVs discovered at hard X-rays with INTEGRAL and which show features of a magnetic white dwarf (WD) in their optical spectra. The aim of these observations is to derive the orbital periods of these systems and the spin periodicity of their accreting WD.