Microlensing as a possible probe of event-horizon structure in quasars
In quasars which are lensed by galaxies, the point-like images sometimes show sharp and uncorrelated brightness variations (microlensing). These brightness changes are associated with the innermost region of the quasar passing through a complicated pattern of caustics produced by the stars in the le...
Gespeichert in:
| Hauptverfasser: | , |
|---|---|
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
08 December 2017
|
| In: |
Monthly notices of the Royal Astronomical Society
Year: 2018, Jahrgang: 475, Heft: 2, Pages: 1925-1936 |
| ISSN: | 1365-2966 |
| DOI: | 10.1093/mnras/stx3166 |
| Online-Zugang: | Verlag, kostenfrei, Volltext: http://dx.doi.org/10.1093/mnras/stx3166 Verlag, kostenfrei, Volltext: https://academic.oup.com/mnras/article/475/2/1925/4712234 
|
| Verfasserangaben: | Mihai Tomozeiu, Irshad Mohammed, Manuel Rabold, Prasenjit Saha and Joachim Wambsganss |
MARC
| LEADER | 00000caa a2200000 c 4500 | ||
|---|---|---|---|
| 001 | 1571144137 | ||
| 003 | DE-627 | ||
| 005 | 20230313185053.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 180316r20172018xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1093/mnras/stx3166 |2 doi | |
| 035 | |a (DE-627)1571144137 | ||
| 035 | |a (DE-576)501144137 | ||
| 035 | |a (DE-599)BSZ501144137 | ||
| 035 | |a (OCoLC)1340994373 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rda | ||
| 041 | |a eng | ||
| 084 | |a 29 |2 sdnb | ||
| 100 | 1 | |a Tomozeiu, Mihai Marian |e VerfasserIn |0 (DE-588)1137893133 |0 (DE-627)895198703 |0 (DE-576)491864388 |4 aut | |
| 245 | 1 | 0 | |a Microlensing as a possible probe of event-horizon structure in quasars |c Mihai Tomozeiu, Irshad Mohammed, Manuel Rabold, Prasenjit Saha and Joachim Wambsganss |
| 264 | 1 | |c 08 December 2017 | |
| 300 | |a 12 | ||
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a Computermedien |b c |2 rdamedia | ||
| 338 | |a Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Gesehen am 16.03.2018 | ||
| 520 | |a In quasars which are lensed by galaxies, the point-like images sometimes show sharp and uncorrelated brightness variations (microlensing). These brightness changes are associated with the innermost region of the quasar passing through a complicated pattern of caustics produced by the stars in the lensing galaxy. In this paper, we study whether the universal properties of optical caustics could enable extraction of shape information about the central engine of quasars. We present a toy model with a crescent-shaped source crossing a fold caustic. The silhouette of a black hole over an accretion disc tends to produce roughly crescent sources. When a crescent-shaped source crosses a fold caustic, the resulting light curve is noticeably different from the case of a circular luminosity profile or Gaussian source. With good enough monitoring data, the crescent parameters, apart from one degeneracy, can be recovered. | ||
| 534 | |c 2018 | ||
| 700 | 1 | |a Wambsganß, Joachim |d 1961- |e VerfasserIn |0 (DE-588)122246861 |0 (DE-627)081826931 |0 (DE-576)293172137 |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |a Royal Astronomical Society |t Monthly notices of the Royal Astronomical Society |d Oxford : Oxford Univ. Press, 1827 |g 475(2018), 2, Seite 1925-1936 |h Online-Ressource |w (DE-627)314059164 |w (DE-600)2016084-7 |w (DE-576)090955420 |x 1365-2966 |7 nnas |
| 773 | 1 | 8 | |g volume:475 |g year:2018 |g number:2 |g pages:1925-1936 |g extent:12 |a Microlensing as a possible probe of event-horizon structure in quasars |
| 856 | 4 | 0 | |u http://dx.doi.org/10.1093/mnras/stx3166 |x Verlag |x Resolving-System |z kostenfrei |3 Volltext |
| 856 | 4 | 0 | |u https://academic.oup.com/mnras/article/475/2/1925/4712234 |x Verlag |z kostenfrei |3 Volltext |
| 951 | |a AR | ||
| 992 | |a 20180316 | ||
| 993 | |a Article | ||
| 994 | |a 2017 | ||
| 998 | |g 122246861 |a Wambsganß, Joachim |m 122246861:Wambsganß, Joachim |d 700000 |d 714000 |d 714100 |e 700000PW122246861 |e 714000PW122246861 |e 714100PW122246861 |k 0/700000/ |k 1/700000/714000/ |k 2/700000/714000/714100/ |p 5 |y j | ||
| 999 | |a KXP-PPN1571144137 |e 3003565583 | ||
| BIB | |a Y | ||
| SER | |a journal | ||
| JSO | |a {"name":{"displayForm":["Mihai Tomozeiu, Irshad Mohammed, Manuel Rabold, Prasenjit Saha and Joachim Wambsganss"]},"language":["eng"],"type":{"bibl":"article-journal","media":"Online-Ressource"},"person":[{"family":"Tomozeiu","role":"aut","given":"Mihai Marian","display":"Tomozeiu, Mihai Marian"},{"display":"Wambsganß, Joachim","given":"Joachim","role":"aut","family":"Wambsganß"}],"title":[{"title":"Microlensing as a possible probe of event-horizon structure in quasars","title_sort":"Microlensing as a possible probe of event-horizon structure in quasars"}],"physDesc":[{"extent":"12 S."}],"id":{"doi":["10.1093/mnras/stx3166"],"eki":["1571144137"]},"note":["Gesehen am 16.03.2018"],"origin":[{"dateIssuedDisp":"08 December 2017","dateIssuedKey":"2017"}],"recId":"1571144137","relHost":[{"corporate":[{"role":"aut","display":"Royal Astronomical Society"}],"type":{"media":"Online-Ressource","bibl":"periodical"},"title":[{"title_sort":"Monthly notices of the Royal Astronomical Society","title":"Monthly notices of the Royal Astronomical Society"}],"part":{"text":"475(2018), 2, Seite 1925-1936","pages":"1925-1936","year":"2018","issue":"2","extent":"12","volume":"475"},"physDesc":[{"extent":"Online-Ressource"}],"disp":"Royal Astronomical SocietyMonthly notices of the Royal Astronomical Society","origin":[{"dateIssuedKey":"1827","publisher":"Oxford Univ. Press ; Blackwell ; Wiley-Blackwell","dateIssuedDisp":"1827-","publisherPlace":"Oxford ; Oxford [u.a.] ; Oxford [u.a.]"}],"note":["Gesehen am 15.01.2018"],"pubHistory":["1.1827 -"],"recId":"314059164","language":["eng"],"id":{"issn":["1365-2966"],"doi":["10.1111/(ISSN)1365-2966"],"zdb":["2016084-7"],"eki":["314059164"]}}]} | ||
| SRT | |a TOMOZEIUMIMICROLENSI0820 | ||