dc.identifier.uri |
http://dx.doi.org/10.15488/10619 |
|
dc.identifier.uri |
https://www.repo.uni-hannover.de/handle/123456789/10697 |
|
dc.contributor.author |
Nieder, L.
|
|
dc.contributor.author |
Allen, Bruce
|
|
dc.contributor.author |
Clark, C.J.
|
|
dc.contributor.author |
Pletsch, H.J.
|
|
dc.date.accessioned |
2021-03-25T06:34:04Z |
|
dc.date.available |
2021-03-25T06:34:04Z |
|
dc.date.issued |
2020 |
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dc.identifier.citation |
Nieder, L.; Allen, B.; Clark, C.J.; Pletsch, H.J.: Exploiting orbital constraints from optical data to detect binary gamma-Ray pulsars. In: Astrophysical Journal 901 (2020), Nr. 2, 156. DOI: https://doi.org/10.3847/1538-4357/abaf53 |
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dc.description.abstract |
It is difficult to discover pulsars via their gamma-ray emission because current instruments typically detect fewer than one photon per million rotations. This creates a significant computing challenge for isolated pulsars, where the typical parameter search space spans wide ranges in four dimensions. It is even more demanding when the pulsar is in a binary system, where the orbital motion introduces several additional unknown parameters. Building on earlier work by Pletsch & Clark, we present optimal methods for such searches. These can also incorporate external constraints on the parameter space to be searched, for example, from optical observations of a presumed binary companion. The solution has two parts. The first is the construction of optimal search grids in parameter space via a parameter space metric, for initial semicoherent searches and subsequent fully coherent follow-ups. The second is a method to demodulate and detect the periodic pulsations. These methods have different sensitivity properties than traditional radio searches for binary pulsars and might unveil new populations of pulsars. © 2020. The Author(s). Published by the American Astronomical Society. |
eng |
dc.language.iso |
eng |
|
dc.publisher |
London : Institute of Physics Publ. (IOP) |
|
dc.relation.ispartofseries |
Astrophysical Journal 901 (2020), Nr. 2 |
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dc.rights |
CC BY 4.0 Unported |
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dc.rights.uri |
https://creativecommons.org/licenses/by/4.0/ |
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dc.subject |
astrophysical applications |
eng |
dc.subject |
orbital constraints |
eng |
dc.subject |
binary gamma-ray pulsars |
eng |
dc.subject |
optical observation |
eng |
dc.subject |
periodic pulsations |
eng |
dc.subject.ddc |
520 | Astronomie, Kartographie
|
ger |
dc.title |
Exploiting orbital constraints from optical data to detect binary gamma-Ray pulsars |
|
dc.type |
Article |
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dc.type |
Text |
|
dc.relation.essn |
1538-4357 |
|
dc.relation.issn |
0004-637X |
|
dc.relation.doi |
https://doi.org/10.3847/1538-4357/abaf53 |
|
dc.bibliographicCitation.issue |
2 |
|
dc.bibliographicCitation.volume |
901 |
|
dc.bibliographicCitation.firstPage |
156 |
|
dc.description.version |
publishedVersion |
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tib.accessRights |
frei zug�nglich |
|