Possible detection of TeV gamma rays from AM Herculis

BL Lacertae identifications in a ROSAT-selected sample ofFermiunidentified objects

“…Possible TeV emission from some magnetic CVs was announced in the past (Bhat et al 1991;Bowden et al 1992;Meintjes et al 1992), but was never confirmed by subsequent deeper observations (Lang et al 1998;Sidro et al 2008;López-Coto et al 2013). Indeed, models describing production of γ-ray emission from magnetic CVs have been developed (e.g., Schlegel et al 1995, and references therein; Bednarek & Pabich 2011), but they can hardly be applied to the two cases in our sample as they do not appear to host a white dwarf with a strong magnetic field (see Appendix).…”

The Golden Age of Cataclysmic Variables and Related Objects (Old and News)

“…At the beginning of the nineties of the last century, acceleration of particles by the rotating magnetic field of the WD in intermediate polars in the propeller regime -AE Aqr --detected by ground-based Cherenkov telescopes in the TeV passband (e.g. Meintjes et al 1992), and TeV emission from the polar AM Her detected by ground-based Cherenkov telescopes (Bhat et al 1991) -measurements never confirmed -were the main reasons of renewed interest for CVs in the high energy astrophysicists community.…”

Ground-based TeV γ-ray Astronomy in India - Historical Perspective and Recent Developments

“…3 was operated during 1984-89. Using this system they observed a few Xray binaries (Cyg X-3, Her X-1, 4U0115+63), pulsars (Geminga, PSR 0355+54) and cataclysmic variables (Am Her) and other sources [20,21,22]. More details of the historic account of the above activities are documented in literature [23,24].…”