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Is there a mass discrepancy in the Cepheid binary OGLE-LMC-CEP0227?
Hilding R. Neilson, Norbert Langer
Context. The Cepheid mass discrepancy, the difference between masses predicted from stellar evolution and stellar pulsation calculations, is a challenge for the understanding of st…
On the circumstellar medium of massive stars and how it may appear in GRB observations
Allard Jan van Marle, Rony Keppens, Sung-Chul Yoon +1
Massive stars lose a large fraction of their original mass over the course of their evolution. These stellar winds shape the surrounding medium according to parameters that are the…
Stellar Evolution with Pulsation-Driven Mass Loss: The Case of LMC Cepheids
Hilding Neilson, Norbert Langer, Matteo Cantiello
The Cepheid mass discrepancy, the difference between mass estimates from stellar pulsation and stellar evolution models, is a long standing challenge for the understanding of stell…
3D Simulations of Betelgeuse's Bow Shock
S. Mohamed, J. Mackey, N. Langer
Betelgeuse, the bright, cool red supergiant in Orion, is moving supersonically relative to the local interstellar medium. The star emits a powerful stellar wind which collides with…
GRIPS - Gamma-Ray Imaging, Polarimetry and Spectroscopy
J. Greiner, K. Mannheim, F. Aharonian +65
We propose to perform a continuously scanning all-sky survey from 200 keV to 80 MeV achieving a sensitivity which is better by a factor of 40 or more compared to the previous missi…
The Cepheid mass discrepancy and pulsation-driven mass loss
Hilding R. Neilson, Matteo Cantiello, Norbert Langer
Context. A longstanding challenge for understanding classical Cepheids is the Cepheid mass discrepancy, where theoretical mass estimates using stellar evolution and stellar pulsati…