Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Aleksandar Cikota"'
Autor:
William Sheu, Xiaosheng Huang, Aleksandar Cikota, Nao Suzuki, Antonella Palmese, David J. Schlegel, Christopher Storfer
Publikováno v:
The Astrophysical Journal, Vol 973, Iss 1, p 24 (2024)
We present a pipeline to identify photometric variability within strong gravitationally lensing candidates, in the Dark Energy Spectroscopic Instrument Legacy Imaging Surveys. In our first paper, we laid out our pipeline and presented seven new gravi
Externí odkaz:
https://doaj.org/article/1c8fae5968f54e92a6019981d542a324
Autor:
William Sheu, Aleksandar Cikota, Xiaosheng Huang, Karl Glazebrook, Christopher Storfer, Shrihan Agarwal, David J. Schlegel, Nao Suzuki, Tania M. Barone, Fuyan Bian, Tesla Jeltema, Tucker Jones, Glenn G. Kacprzak, Jackson H. O’Donnell, Keerthi Vasan G. C.
Publikováno v:
The Astrophysical Journal, Vol 973, Iss 1, p 3 (2024)
Over the past few years alone, the lensing community has discovered thousands of strong lens candidates, and spectroscopically confirmed hundreds of them. In this time of abundance, it becomes pragmatic to focus our time and resources on the few extr
Externí odkaz:
https://doaj.org/article/729c718f7819453aaa2cd7e141152f01
Autor:
Aleksandar Cikota, Ivonne Toro Bertolla, Xiaosheng Huang, Saul Baltasar, Nicolas Ratier-Werbin, William Sheu, Christopher Storfer, Nao Suzuki, David J. Schlegel, Regis Cartier, Simon Torres, Stefan Cikota, Eric Jullo
Publikováno v:
The Astrophysical Journal Letters, Vol 953, Iss 1, p L5 (2023)
Gravitational lensing provides unique insights into astrophysics and cosmology, including the determination of galaxy mass profiles and constraining cosmological parameters. We present spectroscopic confirmation and lens modeling of the strong lensin
Externí odkaz:
https://doaj.org/article/a2f05c81b08b49de80c2f469490a8b3c
Autor:
Aleksandar Cikota, Jiachen Ding, Lifan Wang, Dietrich Baade, Stefan Cikota, Peter Höflich, Justyn Maund, Ping Yang
Publikováno v:
The Astrophysical Journal Letters, Vol 949, Iss 1, p L9 (2023)
Accurate distance determination to astrophysical objects is essential for the understanding of their intrinsic brightness and size. The distance to SN 1987A has been previously measured by the expanding photosphere method and by using the angular siz
Externí odkaz:
https://doaj.org/article/aedc0577abd2495084934cb50b4157aa
Publikováno v:
The Astrophysical Journal Letters, Vol 943, Iss 2, p L18 (2023)
Tidal disruption events (TDEs) occur when a star orbiting a massive black hole is sufficiently close to being tidally ripped apart by the black hole. AT 2022cmc is the first relativistic TDE that was observed (and discovered) as an optically bright a
Externí odkaz:
https://doaj.org/article/17bdd84593034f29b559bbd6f4466f76
Publikováno v:
The Astrophysical Journal Supplement Series, Vol 269, Iss 2, p 61 (2023)
The time delay between multiple images of strongly lensed quasars is a powerful tool for measuring the Hubble constant ( H _0 ). To achieve H _0 measurements with higher precision and accuracy using the time delay, it is crucial to expand the sample
Externí odkaz:
https://doaj.org/article/cf14be5427f2425ebcc2de8aa2ee6a58
Autor:
William Sheu, Xiaosheng Huang, Aleksandar Cikota, Nao Suzuki, David J. Schlegel, Christopher Storfer
Publikováno v:
The Astrophysical Journal, Vol 952, Iss 1, p 10 (2023)
The introduction of deep wide-field surveys in recent years and the adoption of machine-learning techniques have led to the discoveries of ${ \mathcal O }({10}^{4})$ strong gravitational lensing systems and candidates. However, the discovery of multi
Externí odkaz:
https://doaj.org/article/8ec4588a14f74ee4a18770f30d22bed9
Autor:
Peter Hoeflich, Yi Yang, Dietrich Baade, Aleksandar Cikota, Justyn R Maund, Divya Mishra, Ferdinando Patat, Kishore C Patra, Lifan Wang, J Craig Wheeler, Alexei V Filippenko, Avishay Gal-Yam, Steven Schulze
Optical spectropolarimetry of the normal thermonuclear supernova SN2019np from -14.5 to +14.5 days relative to B-band maximum detected an intrinsic continuum polarization, p(cont), of 0.21+-0.09% at the first epoch. Between days -11.5 to +05, p(cont)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5422456f6fb8bd96810c62c3b02ed9a3
Autor:
Giorgos Leloudas, Mattia Bulla, Aleksandar Cikota, Lixin Dai, Lars L. Thomsen, Justyn R. Maund, Panos Charalampopoulos, Nathaniel Roth, Iair Arcavi, Katie Auchettl, Daniele B. Malesani, Matt Nicholl, Enrico Ramirez-Ruiz
Publikováno v:
Nature Astronomy, 6, pp. 1193-1202
Nature Astronomy, 6, 1193-1202
Nature Astronomy, 6, 1193-1202
A star crossing the tidal radius of a supermassive black hole will be spectacularly ripped apart with an accompanying burst of radiation. A few tens of such tidal disruption events (TDEs) have now been identified in the optical wavelengths, but the e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0dc47aac0a6ecc3ea342e596108834fe
http://arxiv.org/abs/2207.06855
http://arxiv.org/abs/2207.06855
Autor:
Y. Yang, Dietrich Baade, Aleksandar Cikota, Peter Höflich, Alexei V. Filippenko, Lifan Wang, Mattia Bulla, Matthew R. Chu, Ferdinando Patat, J. Craig Wheeler, Justyn R. Maund
Some highly reddened Type Ia supernovae (SNe Ia) display low total-to-selective extinction ratios ($R_V \lesssim 2$) in comparison to that of typical Milky Way dust ($R_V \approx 3.3$), and polarization curves that rise steeply to blue wavelengths, w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dfa42468b4eb2ebfe059693d57f81a24
https://eprints.whiterose.ac.uk/184273/1/stab3392.pdf
https://eprints.whiterose.ac.uk/184273/1/stab3392.pdf