Results 31 to 40 of about 118,995 (201)

Hidden No More: Spotlight on Tidal Disruption Events in Active Galactic Nuclei

Astronomische Nachrichten, EarlyView.
ABSTRACT Tidal disruption events (TDEs) are typically discovered in previously quiescent galaxies. However, earlier studies have revealed a handful of TDEs occurring in pre‐existing active galactic nuclei (AGN). We discuss AT2019aalc, a promising TDE candidate in an AGN, and compare it to similar sources.
Patrik Milán Veres
wiley   +1 more source

Survey on AI‐Enabled Computer Vision Technologies and Applications for Space Robotic Missions

Journal of Field Robotics, EarlyView.
ABSTRACT This survey provides a comprehensive overview of recent advancements and challenges in Artificial Intelligence (AI)‐enabled computer vision (CV) techniques for space robotic missions, spanning critical phases such as Entry, Descent, and Landing (EDL), orbital operations, and planetary surface exploration.
Maciej Quoos, Steven Kay, Julia Wajoras, Robert Field, Evridiki V. Ntagiou, Fakher Mohammad, Yang Gao   +6 more
wiley   +1 more source

Mathematics and explanation in astronomy and astrophysics [PDF]

, 2007
The purpose of this paper is to expound and clarify the mathematics and explanations commonly employed in certain notable areas of astronomy and astrophysics.
McCabe, Gordon
core   +2 more sources

The scientific potential of space-based gravitational wave detectors

, 2014
The millihertz gravitational wave band can only be accessed with a space-based interferometer, but it is one of the richest in potential sources. Observations in this band have amazing scientific potential.
A. Arvanitaki, A. Merloni, A. Petiteau, A. Sesana, A.M. Koekemoer, B.F. Schutz, C. Li, C.F. Sopuerta, C.F.B. Macedo, C.L. MacLeod, C.M. Will, D. Coe, D.J. Croton, D.J. Mortlock, E. Barausse, E. Barausse, E. Barausse, E. Bert, E. Berti, E. Berti, E. Berti, F.D. Ryan, F.D. Ryan, G. Hobbs, G. Nelemans, J.E. Greene, J.R. Gair, J.R. Gair, J.R. Gair, J.R. Gair, K. Danzmann, K. Glampedakis, K. Yagi, K.G. Arun, K.G. Arun, K.G. Arun, L. Barack, L. Barack, M. Kesden, M. Tinto, N. Cornish, N. Yunes, N. Yunes, N. Yunes, N.A. Collins, N.A. Grogin, P. Amaro-Seoane, P. Amaro-Seoane, P. Amaro-Seoane, P. Amaro-Seoane, P. Binetruy, P. Canizares, P. Pani, P.A.R. Ade, R.K. Sheth, S. Gossan, S. Hilbert, S. Nissanke, S. Tremaine, S. Vigeland, S.A. Hughes, S.W. Hawking, T.A. Apostolatos   +62 more
core   +1 more source

Spiral galaxies as enantiomers: Chirality, an underlying feature in chemistry and astrophysics [PDF]

Chirality, 2005
AbstractSpiral galaxies are axisymmetric objects showing 2D chirality when projected onto a plane. Features in common with tetrahedral molecules are pointed out, in particular the existence of a preferred chiral modality for genetic galaxies as in amino acids and sugars. Environmental effects can influence the intrinsic chirality of originally isolated
CAPOZZIELLO, SALVATORE, A. Lattanzi
openaire   +3 more sources

Noble gases and nitrogen in material from asteroid Bennu

Meteoritics &Planetary Science, EarlyView.
Abstract We report the elemental and isotopic abundances of all stable noble gases (helium, neon, argon, krypton, and xenon) in eight particles from asteroid Bennu returned by NASA's OSIRIS‐REx mission. We also report nitrogen abundances and isotopic ratios that were analyzed alongside neon and argon in four additional Bennu particles.
B. Marty, L. Zimmermann, E. Füri, D. V. Bekaert, J. J. Barnes, A. N. Nguyen, H. C. Connolly, D. S. Lauretta   +7 more
wiley   +1 more source

The VLBA 2cm Survey: Kinematics of pc-Scale Structures in Active Galactic Nuclei [PDF]

, 2002
The kinematics of jets in active galactic nuclei (QSOs, BL Lacs, Radio Galaxies and Empty Field objects) on parsec scales is being studied with Very Long Baseline Array observations at 15 GHz of a sample of more than 170 radio sources.
Ros, E.
core   +2 more sources

Astrophysics & cosmology from line intensity mapping vs galaxy surveys [PDF]

, 2021
Emmanuel Schaan, Martin White
openalex   +1 more source

Autoparallels and the Inverse Problem of the Calculus of Variations

Fortschritte der Physik, Volume 74, Issue 5, May 2026.
ABSTRACT We prove that autoparallel curves associated with a torsion‐free but not necessarily metric‐compatible affine connection can be derived from an action principle. We explicitly construct the action functional and show by standard variational techniques that it produces the desired equations.
Lavinia Heisenberg
wiley   +1 more source

Mind and Cosmos as Throughput Systems: A Convergence Through the Throughput Model

Systems Research and Behavioral Science, Volume 43, Issue 3, Page 1212-1228, May/June 2026.
ABSTRACT This paper advances a conceptual and mathematical foundations approach by applying the throughput model (TPM) to cosmic phenomena, reframing the universe as an extended information processing system. TPM's four stages, Perception, Information, Judgement and Decision Choice, are reformulated in explicit information‐theoretic and dynamical ...
Waymond Rodgers
wiley   +1 more source