Results 111 to 120 of about 6,949,336 (206)

Radiative acceleration of gas in quasars

, 1995
Quasars can radiate up to a thousand times the energy of the entire Galaxy, yet this energy is generated in a small region approximately one light day across.
Arav, N., Korista, K. T., Begelman, M. C., Barlow, T. A.   +3 more
core  

Discovery of 24 radio-bright quasars at $4.9 \leq z \leq6.6$ using low-frequency radio observations [PDF]

, 2022
High redshift quasars ($z>5$) that also shine brightly at radio wavelengths are unique signposts of supermassive black hole activity in the early universe.
Zeimann, G. R., Wagenveld, J. D., Yang, D., Shimwell, T. W., Duncan, K. J., Rottgering, H. J. A., Venemans, B.P., Drabent, A., Lansbury, G., Nanni, R., Saxena, A., Harikane, Y., Hill, G. J., Magliocchetti, M., Miley, G. K., Best, P. N., Banados, E., Gloudemans, A. J., Hennawi, J. F., Hardcastle, M. J., Smith, D. J. B.   +20 more
core  

GBT Detection of Polarization-Dependent HI Absorption and HI Outflows in Local ULIRGs and Quasars

, 2013
We present the results of a 21-cm HI survey of 27 local massive gas-rich late-stage mergers and merger remnants with the Green Bank Telescope (GBT).
Baker, Andrew J., Teng, S., Veilleux, Sylvain, Veilleux, S., Teng, Stacy H., Baker, A.   +5 more
core   +1 more source

Discovery of spectacular quasar-driven superbubbles in red quasars. [PDF]

Sci Adv, 2023
Shen L, Liu G, He Z, Zakamska NL, Glikman E, Greene JE, Hu W, Mou G, Wylezalek D, Rupke DSN.   +9 more
europepmc   +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

THE JET-DISK SYMBIOSIS .2. INTERPRETING THE RADIO/UV CORRELATIONS IN QUASARS [PDF]

, 1995
We investigate the correlation between the accretion disk (UV) luminosity and the radio core emission of a quasar sample. In a radio/$L_{\rm disk}$ plot we find the quasars to be separated into four classes: core dominated quasars (CDQ), lobe dominated ...
MALKAN, MA, FALCKE, H, BIERMANN, PL
core  

The Host Galaxies of Luminous Reddened Quasars at z~2

, 2019
The work in this thesis concerns the host galaxies of a class of luminous, yet heavily-obscured, quasars at z$\sim$2 - a peak epoch of both star formation and black hole accretion.

core   +1 more source

Outshining the quasars at reionization:the X-ray spectrum and light curveof the redshift 6.29 gamma-ray burst GRB 050904

, 2006
Gamma Rays: Bursts, Galaxies: Intergalactic Medium, Galaxies: Quasars: Absorption Lines, X-Rays: Galaxies, X-Rays: General Udgivelsesdato: 19 ...
Sollerman, Jesper Olof, Watson, D., Foley, S., Hjorth, J., Jakobsson, P., Pedersen, K., McBreen, S., Castro Cerón, J. M., Reeves, J.N., Fynbo, J.P.U.   +9 more
core   +1 more source

Tracing the massive inflows feeding super-massive black holes in quasars. [PDF]

Innovation (Camb), 2023
Jiang P, Shi X, Zhou H.
europepmc   +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   +3 more sources