Polarized x-rays from a magnetar
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F22%3A00567509" target="_blank" >RIV/67985815:_____/22:00567509 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1126/science.add0080" target="_blank" >https://doi.org/10.1126/science.add0080</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1126/science.add0080" target="_blank" >10.1126/science.add0080</a>
Alternative languages
Result language
angličtina
Original language name
Polarized x-rays from a magnetar
Original language description
Magnetars are neutron stars with ultrastrong magnetic fields, which can be observed in x-rays. Polarization measurements could provide information on their magnetic fields and surface properties. We observed polarized x-rays from the magnetar 4U 0142+61 using the Imaging X-ray Polarimetry Explorer and found a linear polarization degree of 13.5 +/- 0.8% averaged over the 2- to 8-kilo-electron volt band. The polarization changes with energy: The degree is 15.0 +/- 1.0% at 2 to 4 kilo-electron volts, drops below the instrumental sensitivity similar to 4 to 5 kilo-electron volts, and rises to 35.2 +/- 7.1% at 5.5 to 8 kilo-electron volts. The polarization angle also changes by 90 degrees at similar to 4 to 5 kilo-electron volts. These results are consistent with a model in which thermal radiation from the magnetar surface is reprocessed by scattering off charged particles in the magnetosphere.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Science
ISSN
0036-8075
e-ISSN
1095-9203
Volume of the periodical
378
Issue of the periodical within the volume
6620
Country of publishing house
US - UNITED STATES
Number of pages
5
Pages from-to
646-650
UT code for WoS article
000898883700012
EID of the result in the Scopus database
2-s2.0-85141574099