Results 51 to 60 of about 346 (113)

Erratum: A quasar microlensing light-curve generator for LSST [PDF]

Monthly Notices of the Royal Astronomical Society, 2020
Favio Neira, Timo Anguita, Georgios Vernardos   +2 more
openaire   +1 more source

Improved technique for quasar composite spectra generation [PDF]

Proceedings of VI European Summer School on Experimental Nuclear Astrophysics — PoS(ENAS 6), 2013
Ganna Ivashchenko, Olga Sergijenko, Olena Torbaniuk   +2 more
openaire   +1 more source

QUASAR: Quantum Assembly Code Generation Using Tool-Augmented LLMs via Agentic RL

CoRR
Designing and optimizing task-specific quantum circuits are crucial to leverage the advantage of quantum computing. Recent large language model (LLM)-based quantum circuit generation has emerged as a promising automatic solution. However, the fundamental challenges remain unaddressed: (i) parameterized quantum gates require precise numerical values for
Cong Yu, Valter Uotila, Shilong Deng, Qingyuan Wu, Tuo Shi, Songlin Jiang, Lei You, Bo Zhao 0019   +7 more
openaire   +2 more sources

Astroinformatics of galaxies and quasars: a new general method for photometric redshifts estimation

, 2012
The catalogs are available as Cone Searches in the Virtual Observatory. Contact olaurino@head.cfa.harvard.edu AbstractWith the availability of the huge amounts of data produced by current and future large multiband photometric surveys, photometric redshifts have become a crucial tool for extragalactic astronomy and cosmology. In this paper we present a
openaire   +1 more source

Shared Stochastic Gaussian Process Latent Variable Models: A Multi-modal Generative Model for Quasar Spectra

Trans. Mach. Learn. Res.
This work proposes a scalable probabilistic latent variable model based on Gaussian processes (Lawrence, 2004) in the context of multiple observation spaces. We focus on an application in astrophysics where data sets typically contain both observed spectral features and scientific properties of astrophysical objects such as galaxies or exoplanets.
Vidhi Lalchand, Anna-Christina Eilers
openaire   +4 more sources

Theoretical quasar emission line ratios. IV - General asymptotic escape probabilities and the effects of linear Stark broadening

The Astrophysical Journal, 1981
Established techniques permitting the evaluation of exact asymptotic forms of photon escape probabilities for a wide range of absorption coefficient profile types are used for QSO radiative transfer effect studies, and it is shown that the exact formulae are easily evaluated.
openaire   +1 more source

General Formulation of the Gravitational Lens and Analysis of the Multiple Quasar PG1115 + 080 [PDF]

Progress of Theoretical Physics, 1988
H. Yoshida, M. Omote
openaire   +1 more source

Quantifying Quasar Variability as Part of a General Approach to Classifying Continuously Varying Sources2

, 2010
WOS
Kozlowski, S., Pietrzynski, G.
openaire   +4 more sources

Challenges and opportunities for time-delay cosmography with multi-messenger gravitational lensing. [PDF]

Philos Trans A Math Phys Eng Sci
Birrer S, Smith GP, Shajib AJ, Ryczanowski D, Arendse N.   +4 more
europepmc   +1 more source

Modification of Premises for the Black Hole Information Paradox Caused by Topological Constraints in the Event Horizon Vicinity. [PDF]

Entropy (Basel)
Jacak JE.
europepmc   +1 more source