Zobrazeno 1 - 10
of 752
pro vyhledávání: '"Mediavilla, E."'
Autor:
Fian, C., Jiménez-Vicente, J., Mediavilla, E., Muñoz, J. A., Chelouche, D., Kaspi, S., Forés-Toribio, R.
We introduce a novel method to derive rotation curves with light-day spatial resolution of the inner regions of lensed quasars. We aim to probe the kinematics of the inner part of the broad-line region (BLR) by resolving the microlensing response - a
Externí odkaz:
http://arxiv.org/abs/2407.13381
Autor:
Fian, C., Muñoz, J. A., Jiménez-Vicente, J., Mediavilla, E., Chelouche, D., Kaspi, S., Forés-Toribio, R.
We aim to unveil the structure of the continuum and broad-emission line (BEL) emitting regions in the gravitationally lensed quasar SDSS J1339+1310 by examining the distinct signatures of microlensing present in this system. Our study involves a comp
Externí odkaz:
http://arxiv.org/abs/2407.05942
Autor:
Forés-Toribio, R., Mediavilla, E., Muñoz, J. A., Jiménez-Vicente, J., Fian, C., del Burgo, C.
We propose and discuss a new experimental approach to measure the centroid shift induced by gravitational microlensing in the images of lensed quasars (astrometric microlensing). Our strategy is based on taking the photocenter of a region in the quas
Externí odkaz:
http://arxiv.org/abs/2406.11609
Autor:
Mediavilla, E., Jiménez-Vicente, J.
Gravitational microlensing is a robust tool to detect and directly measure the abundance and mass of any kind of compact objects, either in our galaxy or in the extragalatic domain. On basis to generic, broadly applicable arguments, it is concluded t
Externí odkaz:
http://arxiv.org/abs/2405.14984
Precise lens modeling is a critical step in time delay studies of multiply imaged quasars, which are key for measuring some important cosmological parameters (specially $H_0$). However, lens models (in particular those semi-automatically generated) o
Externí odkaz:
http://arxiv.org/abs/2404.09865
Autor:
Fian, C., Muñoz, J. A., Forés-Toribio, R., Mediavilla, E., Jiménez-Vicente, J., Chelouche, D., Kaspi, S., Richards, G. T.
We aim to reveal the sizes of the continuum and broad emission line (BEL) emitting regions in the gravitationally lensed quasar SDSS J1004+4112 by analyzing the unique signatures of microlensing in this system. Through a comprehensive analysis of 20
Externí odkaz:
http://arxiv.org/abs/2310.11212
We use X-ray observations of quasar microlensing (sensitive to smaller compact objects than in the optical) to study the possible presence of a population of low mass black holes (from $\sim$ $10^{-3}M_{\odot}$ to $10^{-1}M_{\odot}$) in lens galaxies
Externí odkaz:
http://arxiv.org/abs/2307.07473
Autor:
Fian, C., Muñoz, J. A., Mediavilla, E., Jiménez-Vicente, J., Motta, V., Chelouche, D., Wurzer, A., Hanslmeier, A., Rojas, K.
Publikováno v:
A&A 678, A108 (2023)
Our aim is to examine the size, kinematics, and geometry of the broad-line region (BLR) in the double-lensed quasar Q 0957+561 by analyzing the impact of microlensing on various rest-frame ultraviolet broad-emission lines (BELs). We explore the influ
Externí odkaz:
http://arxiv.org/abs/2307.02914
Autor:
Melo, A., Motta, V., Mejía-Restrepo, J., Assef, R. J., Godoy, N., Mediavilla, E., Falco, E., Kochanek, C. S., Ávila-Vera, F., Jerez, R.
Publikováno v:
A&A 680, A51 (2023)
We estimate black hole masses (M$_{\rm BH}$) for 14 gravitationally lensed quasars using the Balmer lines along with estimates based on MgII and CIV emission lines for four and two of them, respectively. We compare with results obtained for other len
Externí odkaz:
http://arxiv.org/abs/2306.03472
Autor:
Vicente, J. Jiménez, Mediavilla, E.
We introduce the use of the Fast Multipole Method (FMM) to speed up gravitational lensing ray tracing calculations. The method allows very fast calculation of ray deflections when a large number of deflectors, $N_*$, is involved, while keeping rigoro
Externí odkaz:
http://arxiv.org/abs/2211.00354