Detecting compact dark matter in galaxy clusters via gravitational microlensing: A2218 and A370
Identifieur interne : 000343 ( Main/Exploration ); précédent : 000342; suivant : 000344Detecting compact dark matter in galaxy clusters via gravitational microlensing: A2218 and A370
Auteurs : A. V. Tuntsov [Australie, États-Unis, France] ; G. F. Lewis [Australie, États-Unis, France] ; R. A. Ibata [France, États-Unis] ; J. Kneib [France, États-Unis]Source :
- Monthly Notices of the Royal Astronomical Society [ 0035-8711 ] ; 2004-09.
English descriptors
- KwdEn :
Abstract
After decades of searching, the true nature of dark matter still eludes us. One potential probe of the form of dark matter in galaxy clusters is to search for microlensing variability in the giant arcs and arclets. In this paper, a simple method is introduced to characterize pixel variability in the limit of high optical depth to microlensing. Expanding on earlier work, the expected microlensing signal for two massive clusters, A2218 and A370 is calculated. It is found that the microlensing signal depends sensitively upon the mix of smooth and compact dark matter in the cluster. Comparison of two deep exposures taken with James Webb Space Telescope or 2‐h exposures taken with a 30‐m class telescope in two epochs separated by a few years will possibly detect a few dozen pixels that show strong variability due to microlensing at the 5σ level, revealing a wealth of information on the microlensing population.
Url:
DOI: 10.1111/j.1365-2966.2004.08115.x
Affiliations:
- Australie, France, États-Unis
- Alsace (région administrative), Grand Est, Midi-Pyrénées, Occitanie (région administrative)
- Strasbourg, Toulouse
Links toward previous steps (curation, corpus...)
Le document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">Detecting compact dark matter in galaxy clusters via gravitational microlensing: A2218 and A370</title><author><name sortKey="Tuntsov, A V" sort="Tuntsov, A V" uniqKey="Tuntsov A" first="A. V." last="Tuntsov">A. V. Tuntsov</name></author><author><name sortKey="Lewis, G F" sort="Lewis, G F" uniqKey="Lewis G" first="G. F." last="Lewis">G. F. Lewis</name></author><author><name sortKey="Ibata, R A" sort="Ibata, R A" uniqKey="Ibata R" first="R. A." last="Ibata">R. A. Ibata</name></author><author><name sortKey="Kneib, J" sort="Kneib, J" uniqKey="Kneib J" first="J." last="Kneib">J. Kneib</name></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:9138203D911634C86D195A490CFDE5092E8D0C6A</idno><date when="2004" year="2004">2004</date><idno type="doi">10.1111/j.1365-2966.2004.08115.x</idno><idno type="url">https://api.istex.fr/document/9138203D911634C86D195A490CFDE5092E8D0C6A/fulltext/pdf</idno><idno type="wicri:Area/Main/Corpus">000529</idno><idno type="wicri:Area/Main/Curation">000529</idno><idno type="wicri:Area/Main/Exploration">000343</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Exploration">000343</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">Detecting compact dark matter in galaxy clusters via gravitational microlensing: A2218 and A370</title><author><name sortKey="Tuntsov, A V" sort="Tuntsov, A V" uniqKey="Tuntsov A" first="A. V." last="Tuntsov">A. V. Tuntsov</name><affiliation wicri:level="1"><country xml:lang="fr">Australie</country><wicri:regionArea>A29, School of Physics, University of Sydney, NSW 2006</wicri:regionArea><wicri:noRegion>NSW 2006</wicri:noRegion></affiliation><affiliation wicri:level="1"><country xml:lang="fr" wicri:curation="lc">États-Unis</country><wicri:regionArea>E‐mail: (AVT); (GFL); (RAI); (JPK) On leave at: Caltech, Astronomy, 105‐24, Pasadena, CA 91125</wicri:regionArea><wicri:noRegion>CA 91125</wicri:noRegion></affiliation><affiliation wicri:level="1"><country wicri:rule="url">France</country></affiliation></author><author><name sortKey="Lewis, G F" sort="Lewis, G F" uniqKey="Lewis G" first="G. F." last="Lewis">G. F. Lewis</name><affiliation wicri:level="1"><country xml:lang="fr">Australie</country><wicri:regionArea>A29, School of Physics, University of Sydney, NSW 2006</wicri:regionArea><wicri:noRegion>NSW 2006</wicri:noRegion></affiliation><affiliation wicri:level="1"><country xml:lang="fr" wicri:curation="lc">États-Unis</country><wicri:regionArea>E‐mail: (AVT); (GFL); (RAI); (JPK) On leave at: Caltech, Astronomy, 105‐24, Pasadena, CA 91125</wicri:regionArea><wicri:noRegion>CA 91125</wicri:noRegion></affiliation><affiliation wicri:level="1"><country wicri:rule="url">France</country></affiliation></author><author><name sortKey="Ibata, R A" sort="Ibata, R A" uniqKey="Ibata R" first="R. A." last="Ibata">R. A. Ibata</name><affiliation wicri:level="3"><country xml:lang="fr">France</country><wicri:regionArea>Observatoire de Strasbourg, 11 rue de l'Universite, F‐67000 Strasbourg</wicri:regionArea><placeName><region type="region" nuts="2">Grand Est</region><region type="old region" nuts="2">Alsace (région administrative)</region><settlement type="city">Strasbourg</settlement></placeName></affiliation><affiliation wicri:level="1"><country xml:lang="fr" wicri:curation="lc">États-Unis</country><wicri:regionArea>E‐mail: (AVT); (GFL); (RAI); (JPK) On leave at: Caltech, Astronomy, 105‐24, Pasadena, CA 91125</wicri:regionArea><wicri:noRegion>CA 91125</wicri:noRegion></affiliation><affiliation wicri:level="1"><country wicri:rule="url">France</country></affiliation></author><author><name sortKey="Kneib, J" sort="Kneib, J" uniqKey="Kneib J" first="J." last="Kneib">J. Kneib</name><affiliation wicri:level="3"><country xml:lang="fr">France</country><wicri:regionArea>Observatoire Midi‐Pyrénées, 14 Av. E. Belin, 31400 Toulouse</wicri:regionArea><placeName><region type="region" nuts="2">Occitanie (région administrative)</region><region type="old region" nuts="2">Midi-Pyrénées</region><settlement type="city">Toulouse</settlement></placeName></affiliation><affiliation wicri:level="1"><country xml:lang="fr" wicri:curation="lc">États-Unis</country><wicri:regionArea>E‐mail: (AVT); (GFL); (RAI); (JPK) On leave at: Caltech, Astronomy, 105‐24, Pasadena, CA 91125</wicri:regionArea><wicri:noRegion>CA 91125</wicri:noRegion></affiliation><affiliation wicri:level="1"><country wicri:rule="url">France</country></affiliation></author></analytic><monogr></monogr><series><title level="j">Monthly Notices of the Royal Astronomical Society</title><idno type="ISSN">0035-8711</idno><idno type="eISSN">1365-2966</idno><imprint><publisher>Blackwell Science Ltd</publisher><pubPlace>23 Ainslie Place , Edinburgh EH3 6AJ , UK . Telephone (0131) 226 7232 Fax (0131) 226 3803</pubPlace><date type="published" when="2004-09">2004-09</date><biblScope unit="volume">353</biblScope><biblScope unit="issue">3</biblScope><biblScope unit="page" from="853">853</biblScope><biblScope unit="page" to="866">866</biblScope></imprint><idno type="ISSN">0035-8711</idno></series><idno type="istex">9138203D911634C86D195A490CFDE5092E8D0C6A</idno><idno type="DOI">10.1111/j.1365-2966.2004.08115.x</idno><idno type="ArticleID">MNR8115</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0035-8711</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>dark matter</term><term>galaxies: clusters: individual: A2218.</term><term>galaxies: clusters: individual: A370</term><term>gravitational lensing</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">After decades of searching, the true nature of dark matter still eludes us. One potential probe of the form of dark matter in galaxy clusters is to search for microlensing variability in the giant arcs and arclets. In this paper, a simple method is introduced to characterize pixel variability in the limit of high optical depth to microlensing. Expanding on earlier work, the expected microlensing signal for two massive clusters, A2218 and A370 is calculated. It is found that the microlensing signal depends sensitively upon the mix of smooth and compact dark matter in the cluster. Comparison of two deep exposures taken with James Webb Space Telescope or 2‐h exposures taken with a 30‐m class telescope in two epochs separated by a few years will possibly detect a few dozen pixels that show strong variability due to microlensing at the 5σ level, revealing a wealth of information on the microlensing population.</div></front></TEI><affiliations><list><country><li>Australie</li><li>France</li><li>États-Unis</li></country><region><li>Alsace (région administrative)</li><li>Grand Est</li><li>Midi-Pyrénées</li><li>Occitanie (région administrative)</li></region><settlement><li>Strasbourg</li><li>Toulouse</li></settlement></list><tree><country name="Australie"><noRegion><name sortKey="Tuntsov, A V" sort="Tuntsov, A V" uniqKey="Tuntsov A" first="A. V." last="Tuntsov">A. V. Tuntsov</name></noRegion><name sortKey="Lewis, G F" sort="Lewis, G F" uniqKey="Lewis G" first="G. F." last="Lewis">G. F. Lewis</name></country><country name="États-Unis"><noRegion><name sortKey="Tuntsov, A V" sort="Tuntsov, A V" uniqKey="Tuntsov A" first="A. V." last="Tuntsov">A. V. Tuntsov</name></noRegion><name sortKey="Ibata, R A" sort="Ibata, R A" uniqKey="Ibata R" first="R. A." last="Ibata">R. A. Ibata</name><name sortKey="Kneib, J" sort="Kneib, J" uniqKey="Kneib J" first="J." last="Kneib">J. Kneib</name><name sortKey="Lewis, G F" sort="Lewis, G F" uniqKey="Lewis G" first="G. F." last="Lewis">G. F. Lewis</name></country><country name="France"><noRegion><name sortKey="Tuntsov, A V" sort="Tuntsov, A V" uniqKey="Tuntsov A" first="A. V." last="Tuntsov">A. V. Tuntsov</name></noRegion><name sortKey="Ibata, R A" sort="Ibata, R A" uniqKey="Ibata R" first="R. A." last="Ibata">R. A. Ibata</name><name sortKey="Ibata, R A" sort="Ibata, R A" uniqKey="Ibata R" first="R. A." last="Ibata">R. A. Ibata</name><name sortKey="Kneib, J" sort="Kneib, J" uniqKey="Kneib J" first="J." last="Kneib">J. Kneib</name><name sortKey="Kneib, J" sort="Kneib, J" uniqKey="Kneib J" first="J." last="Kneib">J. Kneib</name><name sortKey="Lewis, G F" sort="Lewis, G F" uniqKey="Lewis G" first="G. F." last="Lewis">G. F. Lewis</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Amerique/explor/CaltechV1/Data/Main/Exploration
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000343 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 000343 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien
|wiki= Wicri/Amerique
|area= CaltechV1
|flux= Main
|étape= Exploration
|type= RBID
|clé= ISTEX:9138203D911634C86D195A490CFDE5092E8D0C6A
|texte= Detecting compact dark matter in galaxy clusters via gravitational microlensing: A2218 and A370
}}
| This area was generated with Dilib version V0.6.32. |  |