The New AM Her System RX J0704.2+6203. Northern Twin of BL Hyi

TL;DR

This paper reports the identification and detailed study of a magnetic cataclysmic variable star, RX J0704.2+6203, including its orbital period, magnetic field strength, and spectral behavior, revealing its similarity to the polar BL Hyi.

Contribution

The study provides the first detailed characterization of RX J0704.2+6203, including its orbital period, magnetic field, and spectral properties, expanding knowledge of magnetic CVs.

Findings

Orbital period of 97.27 minutes.

Magnetic field strength approximately 20 MG.

Spectral and photometric behavior similar to BL Hyi.

Abstract

We report here on the identification and study of the optical counterpart of the ROSAT source RX J0704.2+6203. Extensive spectral and photometric observation showed that the object belongs to the class of magnetic Cataclysmic Variables. We determined the orbital period of the system to be 97.27m and estimated the strength of its magnetic field to be on the order of 20 MG. The system was observed in both high and low states, common for its class. Other parameters of the magnetic close binary system were estimated. The spectral and photometric behavior of the object is similar to that of the well studied polar BL Hyi.