166 citations · 942 across the 29 of their papers we have counts for
23 papers · 1 filter
X-rays in Cepheids: Identifying Low-Mass Companions of Intermediate-Mass Stars
Nancy Remage Evans, Scott Engle, Ignazio Pillitteri +12
X-ray observations have been made of a sample of 20 classical Cepheids, including two new observations (Polaris and {\it l} Car) reported here. The occurrence of X-ray flux around…
X-rays in Cepheids: XMM-Newton Observations of Aql
Nancy Remage Evans, Ignazio Pillitteri, Pierre Kervella +13
X-ray bursts have recently been discovered in the Cepheids Cep and Dor modulated by the pulsation cycle. We have obtained an observation of the Cepheid Aql with the XMM…
An Earth-like stellar wind environment for Proxima Centauri c
Julián D. Alvarado-Gómez, Jeremy J. Drake, Cecilia Garraffo +4
A new planet has been recently discovered around Proxima Centauri. With an orbital separation of au and a minimum mass of about , Proxima c is a prime…
Phase-modulated X-ray Emission from Cepheids due to Pulsation-Driven Shocks
Sofia-Paraskevi Moschou, Nektarios Vlahakis, Jeremy J. Drake +4
Cepheids are pulsating variable stars with a periodic chromospheric response at UV wavelengths close to their minimum radius phase. Recently, an X-ray variable signature was captur…
The Space Environment and Atmospheric Joule Heating of the Habitable Zone Exoplanet TOI700-d
O. Cohen, C. Garraffo, S. Moschou +4
We investigate the space environment conditions near the Earth-size planet TOI~700~d using a set of numerical models for the stellar corona and wind, the planetary magnetosphere, a…
Tuning the Exo-Space Weather Radio for Stellar Coronal Mass Ejections
Julián D. Alvarado-Gómez, Jeremy J. Drake, Federico Fraschetti +7
Coronal mass ejections (CMEs) on stars other than the Sun have proven very difficult to detect. One promising pathway lies in the detection of type II radio bursts. Their appearanc…