395 citations · 5.4k across the 130 of their papers we have counts for
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Coronae of Stars with Super Solar Elemental Abundances
Uria Peretz, Ehud Behar, Stephen A. Drake
Coronal elemental abundances are known to deviate from the photospheric values of their parent star, with the degree of deviation depending on the First Ionization Potential (FIP).…
Thomson Scattering and Collisional Ionization in the X-rays Grating Spectra of the Recurrent Nova U Scorpii
M. Orio, E. Behar, J. Gallagher +3
We present a Chandra observation of the recurrent nova U Scorpii, done with the HRC-S detector and the LETG grating on day 18 after the observed visual maximum of 2010, and compare…
Variability of a stellar corona on a time scale of days
Raanan Nordon, Ehud Behar, Stephen A. Drake
Elemental abundance effects in active coronae have eluded our understanding for almost three decades, since the discovery of the First Ionization Potential (FIP) effect on the sun.…
Comparing shocks in planetary nebulae with the solar wind termination shock
Noam Soker, Roi Rahin, Ehud Behar +1
We show that suprathermal particles, termed pick-up ions (PUIs), might reduce the postshock temperature of the fast wind and jets in some planetary nebulae (PNs) and in symbiotic s…
XMM-Newton detection of a transient X-ray source in the vicinity of V838 Monocerotis
Fabio Antonini, Rodolfo Jr. Montez, Joel H. Kastner +5
We report the XMM-Newton/EPIC detection in 2008 March of a luminous (L_X ~ 10^32-33 erg/s), variable X-ray source in the vicinity (within ~6") of the enigmatic star V838 Mon, which…