Results 251 to 260 of about 808,178 (346)

Ultrafast charge transfer dynamics in lead sulfide quantum dots probed with resonant Auger spectroscopy at the lead M-edge. [PDF]

RSC Adv
Cartwright E, Johansson FOL, Sloboda T, Kammlander B, Lindblad A, Cappel UB.   +5 more
europepmc   +1 more source

The Slow‐Rotating Nucleus of Comet C/2013 R1 (Lovejoy)

Astronomische Nachrichten, EarlyView.
ABSTRACT The close approach of comet C/2013 R1 (Lovejoy) allowed us to conduct an in‐depth study of the morphology of the inner coma. From the measurement of the dust emission structures expanding near the cometary nucleus in November–December 2013, we derived a slow rotation period of 47.8±1.2$$ 47.8\pm 1.2 $$ h.
Federico Manzini, Virginio Oldani, Andrea Farina, Paolo Ochner, Andrea Reguitti, Luigi R. Bedin, Jean Gabriel Bosch, Erik Bryssinck, Roberto Crippa, Stéphan Gaumont‐Guay, Carl W. Hergenrother, Joel Nicolas, Ivo Scheggia   +12 more
wiley   +1 more source

Author Correction: Biophysical neural adaptation mechanisms enable artificial neural networks to capture dynamic retinal computation. [PDF]

Nat Commun
Idrees S, Manookin MB, Rieke F, Field GD, Zylberberg J.   +4 more
europepmc   +1 more source

Redshift‐Agnostic Machine Learning Classification: Unveiling Peak Performance in Galaxy, Star, and Quasar Classification (Using SDSS DR17)

Astronomische Nachrichten, EarlyView.
ABSTRACT Classification of galaxies, stars, and quasars using spectral data is fundamental to astronomy, but often relies heavily on redshift. This study evaluates the performance of 10 machine learning algorithms on SDSS data to classify these objects, with a particular focus on scenarios where redshift information is unavailable.
Debashis Chatterjee, Prithwish Ghosh
wiley   +1 more source

Study on the multi-wavelength variation of 3C 454.3. [PDF]

Sci Rep
Chen X, Hu S, Jiang Y, Xu J, Huang S, Zhou R, Yin H, Guo D, Li Y, Li H.   +9 more
europepmc   +1 more source

Isolated Neutron Stars as Science Validation for XMM2ATHENA: Ensuring Robust Data for Future X‐Ray Astronomy

Astronomische Nachrichten, EarlyView.
ABSTRACT The discovery of radio‐quiet, x‐ray thermally emitting isolated neutron stars (XINSs) in the ROSAT All‐Sky Survey revealed a previously overlooked component of the neutron star population. Advancements in x‐ray instrumentation and the availability of deep, wide‐area optical surveys now enable us to explore XINSs at fainter x‐ray fluxes and ...
Adriana Mancini Pires, Christian Motch, Axel Schwope, Iris Traulsen, Jean Ballet, Sudip Chakraborty, David Homan, Jan Kurpas, Ada Nebot Gomez‐Moràn, François‐Xavier Pineau, Hugo Tranin, Natalie Webb   +11 more
wiley   +1 more source

Machine learning for improved density functional theory thermodynamics. [PDF]

Sci Rep
Simak SI, Delczeg-Czirjak EK, Eriksson O.   +2 more
europepmc   +1 more source

Stellar Physics and General Relativity

Astronomische Nachrichten, EarlyView.
ABSTRACT The general theory of relativity is currently established as the most precise theory of gravity supported by observations, and its application is diverse ranging from astronomy to cosmology, while its application to astrophysics has been restricted only to compact stars due to the assumption that the Newtonian approximation is sufficient for ...
Shuichi Yokoyama
wiley   +1 more source

Outlines of astronomy [PDF]

John F. W Herschel, Eben Jenks Loomis, J. B Loomis   +2 more
openalex   +1 more source

Discovering fully semantic representations via centroid- and orientation-aware feature learning. [PDF]

Nat Mach Intell
Cha J, Park J, Pinilla S, Morris KL, Allen CS, Wilkinson MI, Thiyagalingam J.   +6 more
europepmc   +1 more source