Imaging point sources with the gravitational lens of an extended Sun

Autor: Viktor T. Toth, Slava G. Turyshev

We study the optical properties of the solar gravitational lens (SGL) while treating the Sun as an extended, axisymmetric and rotating body. The gravitational field of the Sun is represented using a set of zonal harmonics. We develop an analytical de

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c8457436c33a17c34b45ced5e04d2d52
http://arxiv.org/abs/2104.08442

X-raying winds in distant quasars: The first high-redshift wind duty cycle

Autor: Margherita Giustini, E. Bertola, Cristian Vignali, Mauro Dadina, Massimo Cappi, George Chartas, Giorgio Lanzuisi, B. De Marco, Eleonora Torresi

Publikováno v: Astronomy & Astrophysics

Theoretical models of wind-driven feedback from Active Galactic Nuclei (AGN) often identify Ultra-fast outflows (UFOs) as being the main cause for generating galaxy-size outflows, possibly the main actors in establishing the so-called AGN-galaxy co-e

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::45bf2a367456280672dd55a9f0c21449
http://hdl.handle.net/11585/796249

Constraining quasar structure using high-frequency microlensing variations and continuum reverberation

Autor: Frederic Courbin, M. Millon, Dominique Sluse, James H. H. Chan, Vivien Bonvin, G. Vernardos, E. Paic

Publikováno v: Astronomy & Astrophysics. 659:A21

Gravitational microlensing is a powerful tool for probing the inner structure of strongly lensed quasars and for constraining parameters of the stellar mass function of lens galaxies. This is achieved by analysing microlensing light curves between th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8cfd6701b80724515bb4744f1cbc93c1
https://doi.org/10.1051/0004-6361/202141808

A new Einstein Cross gravitational lens of a Lyman-break galaxy

Autor: Renato Falomo, Riccardo Scarpa, Romano L. M. Corradi, Benedetta Vulcani, D. Reverte, Mattia Negrello, Daniela Bettoni, Alessando Omizzolo

We report the study of an "Einstein Cross" configuration first identified in a set of HST images by Cerny et al. 2018. Deep spectroscopic observations obtained at the Spanish 10.4m GTC telescope, allowed us to demonstrate the lens nature of the syste

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2347a334cd66c49a1d7bc511b9bee101
https://orca.cardiff.ac.uk/id/eprint/120502/1/pub.pdf

Discovery and first models of the quadruply lensed quasar SDSS J1433+6007

Autor: Tommaso Treu, Claudio Grillo, Sherry H. Suyu, Adriano Agnello, Tucker Jones, M. Bonamigo

Publikováno v: Monthly Notices of the Royal Astronomical Society, vol 474, iss 3
Agnello, A; Grillo, C; Jones, T; Treu, T; Bonamigo, M; & Suyu, SH. (2018). Discovery and first models of the quadruply lensed quasar SDSS J1433+6007. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 474(3), 3391-3396. doi: 10.1093/mnras/stx2950. UCLA: Retrieved from: http://www.escholarship.org/uc/item/25p841j9
NASA Astrophysics Data System
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, vol 474, iss 3

We report the discovery of the quadruply lensed quasar J1433+6007, mined in the SDSS DR12 photometric catalogues using a novel outlier-selection technique, without prior spectroscopic or UV excess information. Discovery data obtained at the Nordic Op

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a634aa5d9f489eff1c77d5bb8bc248b5
https://escholarship.org/uc/item/25p841j9