[en] Gravitational microlensing is a powerful tool allowing one to probe the structure of quasars on sub-parsec scale. We report recent results, focusing on the broad absorption and emission line regions. In particular microlensing reveals the intrinsic absorption hidden in the P Cygni-type line profiles observed in the broad absorption line quasar H1413+117, as well as the existence of an extended continuum source. In addition, polarization microlensing provides constraints on the scattering region. In the quasar Q2237+030, microlensing differently distorts the Hα and CIV broad emission line profiles, indicating that the low- and high-ionization broad emission lines must originate from regions with distinct kinematical properties. We also present simulations of the effect of microlensing on line profiles considering simple but representative models of the broad emission line region. Comparison of observations to simulations allows us to conclude that the Hα emitting region in Q2237+030 is best represented by a Keplerian disk.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Hutsemekers, Damien ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Braibant, Lorraine ; Université de Liège - ULiège > Département ArGEnCo > Géoressources minérales & Imagerie géologique
Sluse, Dominique ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Département d'astrophys., géophysique et océanographie (AGO)
Anguita, Timo
Goosmann, René
Language :
English
Title :
New constraints on quasar broad absorption and emission line regions from gravitational microlensing
Publication date :
01 September 2017
Journal title :
Frontiers in Astronomy and Space Sciences
eISSN :
2296-987X
Publisher :
Frontiers Research Foundation, Lausanne, Switzerland
scite shows how a scientific paper has been cited by providing the context of the citation, a classification describing whether it supports, mentions, or contrasts the cited claim, and a label indicating in which section the citation was made.
Bibliography
Abajas C., Mediavilla E., Muñoz J. A., Gómez-Álvarez P., Gil-Merino R., (2007). Microlensing of a biconical broad-line region. Astrophys. J. 658, 748–762. 10.1086/511023
Abajas C., Mediavilla E., Muñoz J. A., Popović L. Č., Oscoz A., (2002). The influence of gravitational microlensing on the broad emission lines of quasars. Astrophys. J. 576, 640–652. 10.1086/341793
Angonin M.-C., Vanderriest C., Remy M., Surdej J., (1990). First spectroscopic evidence of microlensing on a BAL quasar? The case of H 1413+117. Astron. Astrophys. 233, L5–L8.
Anguita T., Schmidt R. W., Turner E. L., Wambsganss J., Webster R. L., Loomis K. A., et al. (2008). The multiple quasar Q2237+0305 under a microlensing caustic. Astron. Astrophys. 480, 327–334. 10.1051/0004-6361:20078221
Borguet B., Hutsemékers D., (2010). A polar+equatorial wind model for broad absorption line quasars. I. Fitting the C IV BAL profiles. Astron. Astrophys. 515:A22. 10.1051/0004-6361/200913255
Braibant L., Hutsemékers D., Sluse D., Anguita T., (2016). The different origins of high- and low-ionization broad emission lines revealed by gravitational microlensing in the Einstein cross. Astron. Astrophys. 592:A23. 10.1051/0004-6361/201628594
Braibant L., Hutsemékers D., Sluse D., Anguita T., García-Vergara C. J., (2014). Microlensing of the broad-line region in the quadruply imaged quasar HE0435-1223. Astron. Astrophys. 565:L11. 10.1051/0004-6361/201423633
Braibant L., Hutsemékers D., Sluse D., Goosmann R., (2017). Constraining the geometry and kinematics of the quasar broad emission line region using gravitational microlensing. I. Models and simulations. arXiv:1707.09159.
Chae K.-H., Turnshek D. A., Schulte-Ladbeck R. E., Rao S. M., Lupie O. L., (2001). Hubble space telescope observations of the gravitationally lensed cloverleaf broad absorption line QSO H1413+1143: imaging polarimetry and evidence for microlensing of a scattering region. Astrophys. J. 561, 653–659. 10.1086/323318
Goicoechea L. J., Shalyapin V. N., (2016). Gravitational lens system SDSS J1339+1310: microlensing factory and time delay. Astron. Astrophys. 596:A77. 10.1051/0004-6361/201628790
Grier C. J., Pancoast A., Barth A. J., Fausnaugh M. M., Brewer B. J., Treu T., et al. (2017). The structure of the broad-line region in active galactic nuclei. II. Dynamical modeling of data from the AGN10 reverberation mapping campaign. arXiv:1705.02346.
Guerras E., Mediavilla E., Jimenez-Vicente J., Kochanek C. S., Muñoz J. A., Falco E., Motta V., (2013). Microlensing of quasar broad emission lines: constraints on broad line region size. Astrophys. J. 764:160. 10.1088/0004-637X/764/2/160
Hutsemékers D., (1993). Selective gravitational microlensing and line profile variations in the BAL quasar H 1413+117. Astron. Astrophys. 280, 435–442.
Hutsemékers D., Borguet B., Sluse D., Riaud P., Anguita T., (2010). Microlensing in H1413+117: disentangling line profile emission and absorption in a broad absorption line quasar. Astron. Astrophys. 519:A103. 10.1051/0004-6361/200913247
Hutsemékers D., Sluse D., Braibant L., Anguita T., (2015). Polarization microlensing in the quadruply imaged broad absorption line quasar H1413+117. Astron. Astrophys. 584:A61. 10.1051/0004-6361/201527243
Hutsemékers D., Surdej J., van Drom E., (1994). The use of gravitational microlensing to scan the structure of BAL QSOs. Astrophys. Space Sci. 216, 361–365. 10.1007/BF00982519
Lewis G. F., Ibata R. A., (2004). Gravitational microlensing of quasar broad-line regions at large optical depths. Month. Notices R. Astron. Soc. 348, 24–33. 10.1111/j.1365-2966.2004.07349.x
Motta V., Mediavilla E., Rojas K., Falco E. E., Jiménez-Vicente J., Muñoz J. A., (2017). Probing the Broad-line Region and the Accretion Disk in the Lensed Quasars HE 0435-1223, WFI 2033-4723, and HE 2149-2745 Using Gravitational Microlensing. Astrophys. J. 835:132. 10.3847/1538-4357/835/2/132
Nemiroff R. J., (1988). AGN broad emission line amplification from gravitational microlensing. Astrophys. J. 335, 593–605. 10.1086/166951
O'Dowd M., Bate N. F., Webster R. L., Wayth R., Labrie K., (2011). Differential microlensing measurements of quasar broad-line kinematics in Q2237+0305. Month. Notices R. Astron. Soc. 415, 1985–1998. 10.1111/j.1365-2966.2010.18119.x
O'Dowd M. J., Bate N. F., Webster R. L., Labrie K., Rogers J., (2015). Microlensing constraints on broad absorption and emission line flows in the Quasar H1413+117. Astrophys. J. 813:62. 10.1088/0004-637X/813/1/62
Popović L. Č., Mediavilla E. G., Muñoz J. A., (2001). The influence of microlensing on spectral line shapes generated by a relativistic accretion disc. Astron. Astrophys. 378, 295–301. 10.1051/0004-6361:20011169
Richards G. T., Keeton C. R., Pindor B., Hennawi J. F., Hall P. B., Turner E. L., et al. (2004). Microlensing of the Broad Emission Line Region in the Quadruple Lens SDSS J1004+4112. Astrophys. J. 610, 679–685. 10.1086/421868
Schmidt R. W., Wambsganss J., (2010). Quasar microlensing. General Relat. Gravit. 42, 2127–2150. 10.1007/s10714-010-0956-x
Schneider P., Wambsganss J., (1990). Are the broad emission lines of quasars affected by gravitational microlensing? Astron. Astrophys. 237, 42–53.
Simić S., Popović L. Č., (2014). Broad spectral line and continuum variabilities in QSO spectra induced by microlensing of diffusive massive substructure. Adv. Space Res. 54, 1439–1447. 10.1016/j.asr.2013.11.016
Sluse D., Claeskens J.-F., Hutsemékers D., Surdej J., (2007). Multi-wavelength study of the gravitational lens system RXS J1131-1231. III. Long slit spectroscopy: micro-lensing probes the QSO structure. Astron. Astrophys. 468, 885–901. 10.1051/0004-6361:20066821
Sluse D., Hutsemékers D., Anguita T., Braibant L., Riaud P., (2015). Evidence for two spatially separated UV continuum emitting regions in the Cloverleaf broad absorption line quasar. Astron. Astrophys. 582:A109. 10.1051/0004-6361/201526832
Sluse D., Hutsemékers D., Courbin F., Meylan G., Wambsganss J., (2012). Microlensing of the broad line region in 17 lensed quasars. Astron. Astrophys. 544:A62. 10.1051/0004-6361/201219125
Sluse D., Schmidt R., Courbin F., Hutsemékers D., Meylan G., Eigenbrod A., et al. (2011). Zooming into the broad line region of the gravitationally lensed quasar QSO 2237+0305 ≡ the Einstein Cross. III. Determination of the size and structure of the C iv and C iii] emitting regions using microlensing. Astron. Astrophys. 528:A100. 10.1051/0004-6361/201016110
Wayth R. B., O'Dowd M., Webster R. L., (2005). A microlensing measurement of the size of the broad emission-line region in the lensed quasar QSO 2237+0305. Month. Notices R. Astron. Soc. 359, 561–566. 10.1111/j.1365-2966.2005.08919.x
This website uses cookies to improve user experience. Read more
Save & Close
Accept all
Decline all
Show detailsHide details
Cookie declaration
About cookies
Strictly necessary
Performance
Strictly necessary cookies allow core website functionality such as user login and account management. The website cannot be used properly without strictly necessary cookies.
This cookie is used by Cookie-Script.com service to remember visitor cookie consent preferences. It is necessary for Cookie-Script.com cookie banner to work properly.
Performance cookies are used to see how visitors use the website, eg. analytics cookies. Those cookies cannot be used to directly identify a certain visitor.
Used to store the attribution information, the referrer initially used to visit the website
Cookies are small text files that are placed on your computer by websites that you visit. Websites use cookies to help users navigate efficiently and perform certain functions. Cookies that are required for the website to operate properly are allowed to be set without your permission. All other cookies need to be approved before they can be set in the browser.
You can change your consent to cookie usage at any time on our Privacy Policy page.
