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Ultraviolet Spectropolarimetry With Polstar: Hot Star Magnetospheres
Shultz, M. E.; Casini, R.; Cheung, M. C. M. et al.
2021
 

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Keywords :
Astrophysics - Instrumentation and Methods for Astrophysics; Astrophysics - Solar and Stellar Astrophysics
Abstract :
[en] Polstar is a proposed NASA MIDEX space telescope that will provide high-resolution, simultaneous full-Stokes spectropolarimetry in the far ultraviolet, together with low-resolution linear polarimetry in the near ultraviolet. In this white paper, we describe the unprecedented capabilities this observatory would offer in order to obtain unique information on the magnetic and plasma properties of the magnetospheres of hot stars. This would enable a test of the fundamental hypothesis that magnetospheres should act to rapidly drain angular momentum, thereby spinning the star down, whilst simultaneously reducing the net mass-loss rate. Both effects are expected to lead to dramatic differences in the evolution of magnetic vs. non-magnetic stars.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Shultz, M. E.
Casini, R.
Cheung, M. C. M.
David-Uraz, A.
del Pino Alemán, T.
Erba, C.
Folsom, C. P.
Gayley, K.
Ignace, R.
Keszthelyi, Z.
Kochukhov, O.
Nazé, Yaël  ;  Université de Liège - ULiège > Groupe d'astrophysique des hautes énergies (GAPHE)
Neiner, C.
Oksala, M.
Petit, V.
Scowen, P. A.
Sudnik, N.
ud-Doula, A.
Vink, J. S.
Wade, G. A.
More authors (10 more) Less
Language :
English
Title :
Ultraviolet Spectropolarimetry With Polstar: Hot Star Magnetospheres
Publication date :
01 November 2021
Publisher :
arxiv
Commentary :
White paper in support of Polstar mission proposal
Available on ORBi :
since 17 January 2022

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