dc.contributor.author |
Panini, S. S |
|
dc.contributor.author |
Sreekumar, P |
|
dc.contributor.author |
Marshall, H. L |
|
dc.contributor.author |
Narendranath, S |
|
dc.contributor.author |
Nayak, M |
|
dc.contributor.author |
Athiray, P. S |
|
dc.date.accessioned |
2020-11-10T02:30:24Z |
|
dc.date.available |
2020-11-10T02:30:24Z |
|
dc.date.issued |
2018-01 |
|
dc.identifier.citation |
Journal of Astronomical Telescopes, Instruments, and Systems, Vol. 3, No. 4, pp. 011002-1 - 011002-9 |
en_US |
dc.identifier.issn |
2329-4221 |
|
dc.identifier.uri |
http://prints.iiap.res.in/handle/2248/6731 |
|
dc.description |
Restricted Access © SPIE--The International Society for Optical Engineering; https://doi.org/10.1117/1.JATIS.4.1.011002 |
en_US |
dc.description.abstract |
A simple design of a soft x-ray polarimeter using multilayer mirrors is presented. A multilayer mirror acts as a linear polarization analyzer for x-rays at incidence angles close to the Brewster angle. The instrument consists of an x-ray concentrator, a set of multilayer mirrors placed at 45 deg from the optical axis, and a detector at Nasmyth focus. The instrument rotating about its optical axis during observations can measure the linear polarization of 0.2- to 0.7-keV x-rays from astronomical sources. The use of a soft x-ray concentrator with geometrical area ∼630 cm2 provides sufficient sensitivity to address key scientific questions. Five different multilayer mirrors placed on a rotating wheel provide the option to measure polarization in any of the five narrow bands spanning the 0.2- to 0.7-keV range. Design and estimated performance of the design are discussed. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
SPIE-The International Society for Optical Engineering |
en_US |
dc.subject |
Multilayer mirrors |
en_US |
dc.subject |
Soft x-rays |
en_US |
dc.subject |
Polarimeter |
en_US |
dc.title |
Multilayer mirror-based soft x-ray polarimeter for astronomical observations |
en_US |
dc.type |
Article |
en_US |