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A massive helium star with a sufficiently strong magnetic field to form a magnetar
T. Shenar, G. A. Wade, P. Marchant +13
Magnetars are highly magnetized neutron stars; their formation mechanism is unknown. Hot helium-rich stars with spectra dominated by emission lines are known as Wolf-Rayet stars. W…
Discovery of Magnetospheric Interactions in the Doubly-Magnetic Hot Binary Lupi
Ayan Biswas, Barnali Das, Poonam Chandra +6
Magnetic fields are extremely rare in close, hot binaries, with only 1.5\% of such systems known to contain a magnetic star. The eccentric Lupi system stands out in this popula…
Star-Planet Interaction at radio wavelengths in YZ Ceti: Inferring planetary magnetic field
Corrado Trigilio, Ayan Biswas, Paolo Leto +13
In exoplanetary systems, the interaction between the central star and the planet can trigger Auroral Radio Emission (ARE), due to the Electron Cyclotron Maser mechanism. The high b…
Discovery of extraordinary X-ray emission from magnetospheric interaction in the unique binary stellar system Lupi
B. Das, V. Petit, Y. Nazé +12
We report detailed X-ray observations of the unique binary system Lupi, the only known short-period binary consisting of two magnetic early-type stars. The components have comp…
Spectrum of the secondary component and new orbital elements of the massive triple star Delta Ori A
A. Oplištilová, P. Mayer, P. Harmanec +13
Orionis is the closest massive multiple stellar system and one of the brightest members of the Orion OB association. The primary (Aa1) is a unique evolved O star. In this work,…