Zobrazeno 41 - 50
of 184
pro vyhledávání: '"Lukić, Zarija"'
Autor:
Schmidt, Tobias M., Hennawi, Joseph F., Worseck, Gábor, Davies, Frederick B., Lukić, Zarija, Oñorbe, Jose
The HeII transverse proximity effect - enhanced HeII Ly{\alpha} transmission in a background sightline caused by the ionizing radiation of a foreground quasar - offers a unique opportunity to probe the emission properties of quasars, in particular th
Externí odkaz:
http://arxiv.org/abs/1710.04527
Autor:
Krolewski, Alex, Lee, Khee-Gan, White, Martin, Hennawi, Joseph, Schlegel, David J., Nugent, Peter E., Lukić, Zarija, Stark, Casey W., Fèvre, Olivier Le, Lemaux, Brian C., Maier, Christian, Salvato, Mara, Tasca, Lidia
We present the most distant detection of cosmic voids ($z \sim 2.3$) and the first detection of three-dimensional voids in the Lyman-$\alpha$ forest. We used a 3D tomographic map of the absorption with effective comoving spatial resolution of $2.5\,h
Externí odkaz:
http://arxiv.org/abs/1710.02612
Autor:
Mao, Yao-Yuan, Kovacs, Eve, Heitmann, Katrin, Uram, Thomas D., Benson, Andrew J., Campbell, Duncan, Cora, Sofía A., DeRose, Joseph, Di Matteo, Tiziana, Habib, Salman, Hearin, Andrew P., Kalmbach, J. Bryce, Krughoff, K. Simon, Lanusse, François, Lukić, Zarija, Mandelbaum, Rachel, Newman, Jeffrey A., Padilla, Nelson, Paillas, Enrique, Pope, Adrian, Ricker, Paul M., Ruiz, Andrés N., Tenneti, Ananth, Vega-Martínez, Cristian, Wechsler, Risa H., Zhou, Rongpu, Zu, Ying
Publikováno v:
ApJS (2018), 234, 36
The use of high-quality simulated sky catalogs is essential for the success of cosmological surveys. The catalogs have diverse applications, such as investigating signatures of fundamental physics in cosmological observables, understanding the effect
Externí odkaz:
http://arxiv.org/abs/1709.09665
Galaxy formation depends critically on the physical state of gas in the circumgalactic medium (CGM) and its interface with the intergalactic medium (IGM), determined by the complex interplay between inflows from the IGM and outflows from supernovae o
Externí odkaz:
http://arxiv.org/abs/1709.03988
CosmoGAN: creating high-fidelity weak lensing convergence maps using Generative Adversarial Networks
Autor:
Mustafa, Mustafa, Bard, Deborah, Bhimji, Wahid, Lukić, Zarija, Al-Rfou, Rami, Kratochvil, Jan M.
Publikováno v:
Computational Astrophysics and CosmologySimulations, Data Analysis and Algorithms 2019 6:1
Inferring model parameters from experimental data is a grand challenge in many sciences, including cosmology. This often relies critically on high fidelity numerical simulations, which are prohibitively computationally expensive. The application of d
Externí odkaz:
http://arxiv.org/abs/1706.02390
Autor:
Rorai, Alberto, Hennawi, Joseph F., Oñorbe, Jose, White, Martin, Prochaska, J. Xavier, Kulkarni, Girish, Walther, Michael, Lukić, Zarija, Lee, Khee-Gan
The distribution of diffuse gas in the intergalactic medium (IGM) imprints a series of hydrogen absorption lines on the spectra of distant background quasars known as the Lyman-$\alpha$ forest. Cosmological hydrodynamical simulations predict that IGM
Externí odkaz:
http://arxiv.org/abs/1704.08366
The amplitude of the ionizing background that pervades the intergalactic medium (IGM) at the end of the epoch of reionization provides a valuable constraint on the emissivity of the sources which reionized the Universe. While measurements of the ioni
Externí odkaz:
http://arxiv.org/abs/1703.10174
Implications of $z \sim 6$ Quasar Proximity Zones for the Epoch of Reionization and Quasar Lifetimes
Autor:
Eilers, Anna-Christina, Davies, Frederick B., Hennawi, Joseph F., Prochaska, J. Xavier, Lukić, Zarija, Mazzucchelli, Chiara
We study quasar proximity zones in the redshift range $5.77 \leq z \leq 6.54$ by homogeneously analyzing $34$ medium resolution spectra, encompassing both archival and newly obtained data, and exploiting recently updated systemic redshift and magnitu
Externí odkaz:
http://arxiv.org/abs/1703.02539
Autor:
Wolfson, Molly, Hennawi, Joseph F, Bosman, Sarah E I, Davies, Frederick B, Lukić, Zarija, Becker, George D, Chen, Huanqing, Cupani, Guido, D'Odorico, Valentina, Eilers, Anna-Christina, Haehnelt, Martin G, Keating, Laura C, Kulkarni, Girish, Lai, Samuel, Mesinger, Andrei, Walter, Fabian, Zhu, Yongda
Publikováno v:
Monthly Notices of the Royal Astronomical Society; Jul2024, Vol. 531 Issue 3, p3069-3087, 19p
Many galaxy formation models predict alignments between galaxy spin and the cosmic web (i.e. the directions of filaments and sheets), leading to intrinsic alignment between galaxies that creates a systematic error in weak lensing measurements. These
Externí odkaz:
http://arxiv.org/abs/1612.00067