Volume 518, July-August 2010Herschel: the first science highlights
|Number of page(s)||12|
|Published online||25 August 2010|
Cyclotron harmonics in opacities of isolated neutron star atmospheres
CRAL (UMR CNRS No. 5574),
École Normale Supérieure de Lyon,
69364 Lyon Cedex 07, France e-mail: email@example.com
2 Ioffe Physical-Technical Institute, Politekhnicheskaya 26, 194021 St. Petersburg, Russia
3 Isaac Newton Institute of Chile, St. Petersburg Branch, Russia
Accepted: 5 May 2010
Some X-ray dim isolated neutron stars (XDINS) and central compact objects in supernova remnants (CCO) contain absorption features in their thermal soft X-ray spectra. It has been hypothesized that this absorption may relate to periodic peaks in free-free absorption opacities, caused by either Landau quantization of electron motion in magnetic fields B 1011 G or analogous quantization of ion motion in magnetic fields B > 1013 G. Here, I review the physics behind cyclotron quantum harmonics in free-free photoabsorption, discuss different approximations for their calculation, and explain why the ion cyclotron harmonics (beyond the fundamental) cannot be observed.
Key words: stars: neutron / stars: atmospheres / opacity / magnetic fields / X-rays: stars
© ESO, 2010
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.