Results 71 to 80 of about 283,385 (230)

An Equilibrium Model of the Galaxy Determined by Element Abundance Gradients

The Astrophysical Journal
We present a method to determine the gravitational potential of the Milky Way from measurements of the locations, velocities, and element abundances of stars in the Galactic disk.
Lawrence M. Widrow, David W. Hogg, Danny Horta, Haochaun Li, Adrian M. Price-Whelan   +4 more
doaj   +1 more source

Similar Signatures of Coplanar Gas Inflow and Disk Warps in Galactic Gas Kinematic Maps

The Astrophysical Journal, 2023
Hydrodynamic simulations suggest that galactic gas disks form when coplanar gas spirals into the inner regions of the disk. We recently presented a simple modified accretion disk model of viscous galactic disks in which star formation is fed by a radial ...
Enci Wang, Simon J. Lilly
doaj   +1 more source

A Possible Solution to the Mystery of the ANITA Anomalous Events

Annalen der Physik, Volume 538, Issue 4, April 2026.
In 2006 and 2014, the Antarctic Impulsive Transient Antenna (ANITA), a balloon‐borne radio observatory flying over Antarctica, detected two strange upward‐going radio pulse events that have not yet been explained by our current understanding of physics.
Massimo Villata
wiley   +1 more source

Images I. Strong evolution of galaxy kinematics since z=1 [PDF]

, 2007
Nearly half the stellar mass of present-day spiral galaxies has formed since z = 1, and galaxy kinematics is an ideal tool to identify the underlying mechanisms responsible for the galaxy mass assembly since that epoch. Here, we present the first results
G. Östlin, F. Hammer, Dannerbauer, H., Liang, Y.C., di Serego Alighieri, S., diSeregoAlighieri, S., P. Amram, Hammer, François, Nesvadba, Nicole, Pozzetti, L., B. Guiderdoni, A. Kembhavi, B. Neichel, M. Lehnert, Liang, Y. C., H. Flores, Vernet, J., M., Östlin, G., Yang, Y., Yang, Yanbin, Hammer, F., M. Puech, Ravikumar, C.D., Neichel, Benoît, S. di Serego Alighieri, Cesarsky, Catherine J., J. Vernet, A. Rawat, H. Wozniak, Lehnert, Matthew D., Amram, P., Puech, Mathieu, Östlin, Göran, Flores, Hector, Amram, Philippe, Liang, Yan-Chun, Flores, H., Kembhavi, A., Vernet, J.,, Kembhavi, Ajit K., Cesarsky, C., N. Nesvadba, I. Fuentes-Carrera, Guiderdoni, B., Y. C. Liang, Rawat, Anushree, Wozniak, H., Y. Yang, Vergani, D., C. Cesarsky, Guiderdoni, Bruno, Lehnert, M., Fuentes-Carrera, I., Puech, M., Fuentes-Carrera, Isaura, Neichel, B., L. Pozzetti, C. Balkowski, H. Dannerbauer, C. D. Ravikumar, Balkowski, Chantal, Balkowski, C., Wozniak, Hervé, D. Vergani, Dannerbauer, Helmut, Nesvadba, N., Rawat, A., Vernet, J., Ravikumar, C. D.   +68 more
core   +1 more source

The AGORA High-resolution Galaxy Simulations Comparison Project. VIII. Disk Formation and Evolution of Simulated Milky Way Mass Galaxy Progenitors at 1 < z < 5

The Astrophysical Journal
We investigate how differences in the stellar feedback produce disks with different morphologies in Milky Way–like progenitors over 1 ≤ z ≤ 5, using eight state-of-the-art cosmological hydrodynamics simulation codes in the AGORA project.
Minyong Jung, Ji-hoon Kim, Thịnh Hũ’u Nguyễn, Ramón Rodríguez-Cardoso, Santi Roca-Fàbrega, Joel R. Primack, Kirk S. S. Barrow, Anna Genina, Pablo Granizo, Hyeonyong Kim, Kentaro Nagamine, Yuri Oku, Johnny W. Powell, Yves Revaz, Héctor Velázquez, Alessandro Lupi, Ikkoh Shimizu, Tom Abel, Oscar Agertz, Renyue Cen, Daniel Ceverino, Avishai Dekel, Chaerin Jeong, Lucio Mayer, Boon Kiat Oh, Thomas R. Quinn, Hyunmi Song, AGORA Collaboration   +27 more
doaj   +1 more source

Hitchhiker's Guide to the Swampland: The Cosmologist's Handbook to the String‐Theoretical Swampland Programme

Fortschritte der Physik, Volume 74, Issue 4, April 2026.
Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
wiley   +1 more source

Kinematics

, 2015
Cats Kinematics ...
Braniff De la torre (747330), Sergio H. Duenas (747400)   +1 more
core   +1 more source

Edible Pneumatic Battery for Sustained and Repeated Robot Actuation

Advanced Science, Volume 13, Issue 15, 13 March 2026.
This work presents an edible energy source and valve system to power soft, pneumatically driven edible robots. A chemical reaction between sodium bicarbonate and citric acid generates carbon dioxide gas, and a pressure‐triggered edible valve enables self‐repetitive motion of the edible actuator.
Bokeon Kwak, Shuhang Zhang, Alexander Keller, Qiukai Qi, Jonathan Rossiter, Dario Floreano   +5 more
wiley   +1 more source

Phoenix Dwarf Galaxy Stellar Kinematics

, 2011
The Phoenix dwarf galaxy is the nearest and most typical representative of the class of the so-called transition dwarf galaxies (from spheroidal to irregular).
E.V. Held, Y. Momany, I. Saviane, V. Sommariva, S. Zaggia, L. Rizzi   +5 more
core   +1 more source

Mapping the Stellar Kinematics in the Central 240 pc of M87 with the James Webb Space Telescope

The Astrophysical Journal
The supermassive black hole (SMBH) in the giant elliptical galaxy M87 is one of the most well studied in the local Universe, but the stellar- and gas-dynamical SMBH mass measurements disagree.
Refa M. Al-Amri, Jonelle L. Walsh, Emily R. Liepold, Chung-Pei Ma, Jenny E. Greene   +4 more
doaj   +1 more source