Zobrazeno 1 - 10
of 182
pro vyhledávání: '"Lukić, Zarija"'
Autor:
Wang, Daoce, Grosset, Pascal, Pulido, Jesus, Athawale, Tushar M., Tian, Jiannan, Zhao, Kai, Lukic, Zarija, Huebl, Axel, Wang, Zhe, Ahrens, James, Tao, Dingwen
Multi-resolution methods such as Adaptive Mesh Refinement (AMR) can enhance storage efficiency for HPC applications generating vast volumes of data. However, their applicability is limited and cannot be universally deployed across all applications. F
Externí odkaz:
http://arxiv.org/abs/2407.04267
Autor:
Chabanier, Solène, Ravoux, Corentin, Latrille, Lucas, Sexton, Jean, Armengaud, Éric, Bautista, Julian, Dumerchat, Tyann, Lukić, Zarija
Cosmological information is usually extracted from the Lyman-$\alpha$ forest correlations using only either large-scale information interpreted through linear theory or using small-scale information interpreted by means of expensive hydrodynamical si
Externí odkaz:
http://arxiv.org/abs/2407.04473
We present a novel maximum a posteriori estimator to jointly estimate band-powers and the covariance of the three-dimensional power spectrum (P3D) of Lyman-alpha forest flux fluctuations, called MAPLE. Our Wiener-filter based algorithm reconstructs a
Externí odkaz:
http://arxiv.org/abs/2403.17294
The epoch of hydrogen reionization is complete by $z=5$, but its progression at higher redshifts is uncertain. Measurements of Ly$\alpha$ forest opacity show large scatter at $z<6$, suggestive of spatial fluctuations in neutral fraction ($x_\mathrm{H
Externí odkaz:
http://arxiv.org/abs/2312.01480
Autor:
Hu, Teng, Khaire, Vikram, Hennawi, Joseph F., Tripp, Todd M., Oñorbe, Jose, Walther, Michael, Lukic, Zarija
We perform the first measurement of the thermal and ionization state of the intergalactic medium (IGM) across 0.9 < z < 1.5 using 301 \lya absorption lines fitted from 12 HST STIS quasar spectra, with a total pathlength of \Delta z=2.1. We employ the
Externí odkaz:
http://arxiv.org/abs/2311.17895
Autor:
Abdul-Karim, Marie Lynn, Armengaud, Eric, Mention, Guillaume, Chabanier, Solène, Ravoux, Corentin, Lukić, Zarija
Publikováno v:
JCAP05(2024)088
Small-scale correlations measured in the Lyman-$\alpha$ (Ly$\alpha$) forest encode information about the intergalactic medium and the primordial matter power spectrum. In this article, we present and implement a simple method to measure the 3-dimensi
Externí odkaz:
http://arxiv.org/abs/2310.09116
The auto-correlation function of the Lyman-$\alpha$ (Ly$\alpha$) forest flux from high-z quasars can statistically probe all scales of the intergalactic medium (IGM) just after the epoch of reionization. The thermal state of the IGM, which is determi
Externí odkaz:
http://arxiv.org/abs/2309.05647
Dense gas in minihalos with masses of $10^6-10^8~M_\odot$ can shield themselves from reionization for $\sim100$ Myr after being exposed to the UV background. These self-shielded systems, often unresolved in cosmological simulations, can introduce str
Externí odkaz:
http://arxiv.org/abs/2309.04129
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
Recently, the Lyman-$\alpha$ (Ly$\alpha$) forest flux auto-correlation function has been shown to be sensitive to the mean free path of hydrogen-ionizing photons, $\lambda_{\text{mfp}}$, for simulations at $z \geq 5.4$. Measuring $\lambda_{\text{mfp}
Externí odkaz:
http://arxiv.org/abs/2309.03341
Autor:
Hu, Teng, Khaire, Vikram, Hennawi, Joseph F., Onorbe, Jose, Walther, Michael, Lukic, Zarija, Davies, Frederick
At $z \lesssim 1$, shock heating caused by large-scale velocity flows and possibly violent feedback from galaxy formation, converts a significant fraction of the cool gas ($T\sim 10^4$ K) in the intergalactic medium (IGM) into warm-hot phase (WHIM) w
Externí odkaz:
http://arxiv.org/abs/2308.14738