Results 51 to 60 of about 511 (183)

The Process We Call Earth: Relationships Between Dynamic Feedbacks and the Search for Gaiasignatures in a New Paradigm of Earthlikeness

Perspectives of Earth and Space Scientists, Volume 5, Issue 1, December 2024.
Abstract Standard notions of an “Earthlike” planet rely solely on physical and material properties, like planetary mass, radius, and surface temperature. Here, we introduce a novel, relational perspective on what defines “Earthlikeness.” In our process‐based framework, rocky planets are local pockets of free energy that have the potential to drive the ...
Michael L. Wong, Marissa Duckett, Emilia S. Hernandez, Vahab Rajaei, Kayla J. Smith   +4 more
wiley   +1 more source

Classification of extremely red objects in the Hubble Ultra Deep Field

Research in Astronomy and Astrophysics, 2009
14 pages, 9 figures, accepted by Research in Astronomy and Astrophysics (RAA), Vol 9, No 1 (2009)
Fang, Guan-Wen, Kong, Xu, Wang, Min
openaire   +2 more sources

Glimmers in the Cosmic Dawn. II. A Variability Census of Supermassive Black Holes across the Universe

The Astrophysical Journal
Understanding the origin and evolution of supermassive black holes (SMBHs) stands as one of the most important challenges in astrophysics and cosmology, with little current theoretical consensus.
Vieri Cammelli, Jonathan C. Tan, Alice R. Young, Matthew J. Hayes, Jasbir Singh, Richard S. Ellis, Aayush Saxena, Nicolas Laporte, Pierluigi Monaco, Benjamin W. Keller   +9 more
doaj   +1 more source

The Neutral Water Torus of Europa

Geophysical Research Letters, Volume 51, Issue 21, 16 November 2024.
Abstract The neutral particles that escape Europa form a neutral torus which asymmetrically encircles the giant planet Jupiter. The study of this structure can inform on neutral escape at the icy moon and on the loading of the Jovian magnetosphere with Europan material.
Q. Nénon, F. Leblanc
wiley   +1 more source

THE AFTERLIFE OF SACRIFICE IN THE KURDISH MOVEMENT

Cultural Anthropology, Volume 39, Issue 4, Page 507-532, November 2024.
ABSTRACT What happens when sacrifice is imagined in terms of a debt that can be repaid? In the ongoing conflict begun in 1984 between the Kurdistan Workers' Party and the Turkish state, Kurdish revolutionary discourse has characterized death as the required price for liberation.
ESIN DÜZEL
wiley   +1 more source

MIDIS: MIRI Uncovers Virgil, the First Little Red Dot with Clear Detection of Its Host Galaxy at z ≃ 6.6

The Astrophysical Journal
We present Virgil, a Mid-Infrared Instrument (MIRI) extremely red object detected with the F1000W filter as part of the MIRI Deep Imaging Survey observations of the Hubble Ultra Deep Field.
Edoardo Iani, Pierluigi Rinaldi, Karina I. Caputi, Marianna Annunziatella, Danial Langeroodi, Jens Melinder, Pablo G. Pérez-González, Javier Álvarez-Márquez, Leindert A. Boogaard, Sarah E. I. Bosman, Luca Costantin, Thibaud Moutard, Luis Colina, Göran Östlin, Thomas R. Greve, Gillian Wright, Almudena Alonso-Herrero, Arjan Bik, Steven Gillman, Alejandro Crespo Gómez, Jens Hjorth, Sarah Kendrew, Alvaro Labiano, John P. Pye, Tuomo V. Tikkanen, Fabian Walter, Manuel Güdel, Thomas Henning, Paul P. van der Werf   +28 more
doaj   +1 more source

Measurement and calibration of non-linear shear terms in galaxy cluster fields

Frontiers in Astronomy and Space Sciences
IntroductionGalaxy cluster lensing is a powerful tool for measuring the mass of galaxy clusters, but accurate shear measurement and calibration are critical to obtaining reliable results.
Binyang Liu, Binyang Liu, Ian Dell’Antonio, Nicolas Chotard, Douglas Clowe   +4 more
doaj   +1 more source

Probing extreme black‐hole outflows on short timescales via high spectral‐resolution x‐ray imagers

Astronomische Nachrichten, Volume 345, Issue 6-7, July-August 2024.
Abstract We investigate outflows and the physics of super‐Eddington versus sub‐Eddington regimes in black hole systems. Our focus is on prospective science using next‐generation high‐resolution soft x‐ray instruments. We highlight the properties of black hole ultraluminous x‐ray source (ULX) systems in particular. Owing to scale invariance in accreting
C. Pinto, J. F. Steiner, A. Bodaghee, P. Chakraborty, M. Sobolewska, D. R. Pasham, A. Ogorzalek, J. Zuhone, A. Bogdan, M. Vogelsberger   +9 more
wiley   +1 more source

The MUSE Ultra Deep Field (MUDF). VI. The Relationship between Galaxy Properties and Metals in the Circumgalactic Medium

The Astrophysical Journal
We present initial results associating galaxies in the Multi-Unit Spectroscopic Explorer (MUSE) Ultra Deep Field (MUDF) with gas seen in absorption along the line of sight to two bright quasars in this field to explore the dependence of metals in the ...
Alexander Beckett, Marc Rafelski, Mitchell Revalski, Michele Fumagalli, Matteo Fossati, Kalina Nedkova, Rajeshwari Dutta, Rich Bielby, Sebastiano Cantalupo, Pratika Dayal, Valentina D’Odorico, Marta Galbiati, Céline Péroux   +12 more
doaj   +1 more source

JWST imaging of the closest globular clusters—I. Possible infrared excess among white dwarfs in NGC 6397

Astronomische Nachrichten, Volume 345, Issue 6-7, July-August 2024.
Abstract We present James Webb Space Telescope observations of the globular cluster NGC 6397 and use them to extend to infrared wavelengths the characterization of the cluster's entire white dwarf (WD) cooling sequence (CS). The data allows us to probe fundamental astrophysical WD properties and to search for evidence in their colors for (or against ...
L. R. Bedin, D. Nardiello, M. Salaris, M. Libralato, P. Bergeron, A. J. Burgasser, D. Apai, M. Griggio, M. Scalco, J. Anderson, R. Gerasimov, A. Bellini   +11 more
wiley   +1 more source