Zobrazeno 1 - 10
of 108
pro vyhledávání: '"Jaelani, Anton"'
Combining neural networks with galaxy light subtraction for discovering strong lenses in the HSC SSP
Galaxy-scale strong gravitational lenses are valuable objects for a variety of astrophysical and cosmological applications. Strong lensing galaxies are rare, so efficient search methods, such as convolutional neural networks, are often used on large
Externí odkaz:
http://arxiv.org/abs/2411.07492
Autor:
More, Anupreeta, Canameras, Raoul, Jaelani, Anton T., Shu, Yiping, Ishida, Yuichiro, Wong, Kenneth C., Inoue, Kaiki Taro, Schuldt, Stefan, Sonnenfeld, Alessandro
Efficient algorithms are being developed to search for strong gravitational lens systems owing to increasing large imaging surveys. Neural networks have been successfully used to discover galaxy-scale lens systems in imaging surveys such as the Kilo
Externí odkaz:
http://arxiv.org/abs/2405.12975
Autor:
Jaelani, Anton T., More, Anupreeta, Wong, Kenneth C., Inoue, Kaiki T., Chao, Dani C. -Y., Premadi, Premana W., Cañameras, Raoul
We apply a novel model based on convolutional neural networks (CNNs) to identify gravitationally-lensed galaxies in multi-band imaging of the Hyper Suprime Cam Subaru Strategic Program (HSC-SSP) Survey. The trained model is applied to a parent sample
Externí odkaz:
http://arxiv.org/abs/2312.07333
Autor:
Holloway, Philip, Marshall, Philip J., Verma, Aprajita, More, Anupreeta, Cañameras, Raoul, Jaelani, Anton T., Ishida, Yuichiro, Wong, Kenneth C.
The arrival of the Vera C. Rubin Observatory's Legacy Survey of Space and Time (LSST), Euclid-Wide and Roman wide area sensitive surveys will herald a new era in strong lens science in which the number of strong lenses known is expected to rise from
Externí odkaz:
http://arxiv.org/abs/2311.07455
Autor:
Andika, Irham Taufik, Suyu, Sherry H., Cañameras, Raoul, Melo, Alejandra, Schuldt, Stefan, Shu, Yiping, Eilers, Anna-Christina, Jaelani, Anton Timur, Yue, Minghao
Publikováno v:
A&A 678, A103 (2023)
Quasars experiencing strong lensing offer unique viewpoints on subjects related to the cosmic expansion rate, the dark matter profile within the foreground deflectors, and the quasar host galaxies. Unfortunately, identifying them in astronomical imag
Externí odkaz:
http://arxiv.org/abs/2307.01090
Autor:
Chan, James H. H., Wong, Kenneth C., Ding, Xuheng, Chao, Dani, Chiu, I-Non, Jaelani, Anton T., Kayo, Issha, More, Anupreeta, Oguri, Masamune, Suyu, Sherry H.
We report the discovery of new lensed quasar candidates in the imaging data of the Hyper Suprime-Cam Subaru Strategic Program (HSC-SSP) DR4, covering $1\,310~{\rm deg}^2$ of the sky with seeing of $\approx0.6''$. In addition to two catalogs of MILLIQ
Externí odkaz:
http://arxiv.org/abs/2304.05425
Autor:
Andika, Irham Taufik, Jahnke, Knud, van der Wel, Arjen, Bañados, Eduardo, Bosman, Sarah E. I., Davies, Frederick B., Eilers, Anna-Christina, Jaelani, Anton Timur, Mazzucchelli, Chiara, Onoue, Masafusa, Schindler, Jan-Torge
Over the last two decades, around 300 quasars have been discovered at $z\gtrsim6$, yet only one has identified as being strongly gravitationally lensed. We explore a new approach -- enlarging the permitted spectral parameter space, while introducing
Externí odkaz:
http://arxiv.org/abs/2211.14543
Autor:
Wong, Kenneth C., Chan, James H. H., Chao, Dani C. -Y., Jaelani, Anton T., Kayo, Issha, Lee, Chien-Hsiu, More, Anupreeta, Oguri, Masamune
We conduct a search for galaxy-scale strong gravitational lens systems in Data Release 4 of the Hyper Suprime-Cam Subaru Strategic Program (HSC SSP), consisting of data taken up to the S21A semester. We select 103191 luminous red galaxies from the Ba
Externí odkaz:
http://arxiv.org/abs/2203.12805
Autor:
Shu, Yiping, Cañameras, Raoul, Schuldt, Stefan, Suyu, Sherry H., Taubenberger, Stefan, Inoue, Kaiki Taro, Jaelani, Anton T.
Publikováno v:
A&A 662, A4 (2022)
We carry out a search for strong-lens systems containing high-redshift lens galaxies with the goal of extending strong-lensing-assisted galaxy evolutionary studies to earlier cosmic time. Two strong-lens classifiers are constructed from a deep residu
Externí odkaz:
http://arxiv.org/abs/2201.11135
We report the results of combined analyses of X-ray and optical data of two galaxy clusters, CL 0024$+$1654 and RX J0152.7$-$1357 at redshift $z = 0.395$ and $z = 0.830$, respectively, which offer a holistic physical description of the two clusters.
Externí odkaz:
http://arxiv.org/abs/2106.14581