Zobrazeno 1 - 10
of 8 440
pro vyhledávání: '"Mediavilla A"'
Context. The gravitational lens system SDSS J1004+4112 was the first known example of a quasar lensed by a galaxy cluster. The interest in this system has been renewed following the publication of r-band light curves spanning 14.5 years and the deter
Externí odkaz:
http://arxiv.org/abs/2410.06853
Autor:
Heydenreich, Sven, Mediavilla, Evencio, Jiménez-Vicente, Jorge, Vives-Arias, Héctor, Muñoz, Jose A.
While elementary particles are the favored candidate for the elusive dark matter, primordial black holes (PBHs) have also been considered to fill that role. Gravitational microlensing is a very well-suited tool to detect and measure the abundance of
Externí odkaz:
http://arxiv.org/abs/2409.04534
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:
Mediavilla-Martinez, Irene, Kramberger, Christian, Dadgostar, Shabnam, Jimenez, Juan, Ayala, Paola, Pichler, Thomas, Manjon, Francisco J., Rodriguez-Hernandez, Placida, Muñoz, Alfonso, Serebryanaya, Nadezhda, Buga, Sergei, Serrano, Jorge
Bismuth selenide, a benchmark topological insulator, grows in a trigonal structure at ambient conditions and exhibits a number of enticing properties related to the formation of Dirac surface states. Besides this polytype, a metastable orthorhombic m
Externí odkaz:
http://arxiv.org/abs/2402.07256
We exhibit closed hyperbolic surfaces of genus $10$ and $17$ such that the multiplicity of the first nonzero eigenvalue of their Laplacian is larger than the maximum conjectured by Yves Colin de Verdi\`ere in 1986. In order to determine these multipl
Externí odkaz:
http://arxiv.org/abs/2312.03504
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