Results 31 to 40 of about 1,140 (187)
Extragalactic Astrophysics With Next-Generation CMB Experiments
Frontiers in Astronomy and Space Sciences, 2019 Planck, SPT, and ACT surveys have clearly demonstrated that Cosmic Microwave Background (CMB) experiments, while optimized for cosmological measurements, have made important contributions to the field of extragalactic astrophysics in the last decade ...
Gianfranco De Zotti +14 more
doaj +1 more source
Templates for Fitting Photometry of Ultra-high-redshift Galaxies
The Astrophysical Journal Letters, 2023 Recent data from the James Webb Space Telescope allow a first glimpse of galaxies at z ≳ 11. The most successful tool for identifying ultra-high-redshift candidates and inferring their properties is photometric template fitting.
Charles L. Steinhardt +4 more
doaj +1 more source
Leptonic and Hadronic Radiative Processes in Supermassive-Black-Hole Jets
Galaxies, 2020 Supermassive black holes lying in the center of galaxies can launch relativistic jets of plasma along their polar axis. The physics of black-hole jets is a very active research topic in astrophysics, owing to the fact that many questions remain open on ...
Matteo Cerruti
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ASTROPHYSICAL FRACTALS: INTERSTELLAR MEDIUM AND GALAXIES [PDF]
, 2000 The interstellar medium is structured as a hierachy of gas clouds, that looks self-similar over 6 orders of magnitude in scales and 9 in masses. This is one of the more extended fractal in the Universe. At even larger scales, the ensemble of galaxies looks also self-similar over a certain ranges of scales, but more limited, may be over 3-4 orders of ...
openaire +2 more sources
The Edge-On Galaxies in the DESI Survey (EGIDE): Sample Building and Photometry
GalaxiesWe present the EGIDE (Edge-on Galaxies in the DESI survey) project—a catalog of 149,215 edge-on galaxy candidates created using the data of the DESI Legacy Imaging Survey DR10 images.
Alexander A. Marchuk +9 more
doaj +1 more source
Kinematic Modeling of Distant Galaxies
Open Astronomy, 2012 Evolution of galaxies is one of the most actual topics in astrophysics. Among the most important factors determining the evolution are two galactic components which are difficult or even impossible to detect optically: the gaseous disks and the dark ...
Kipper Rain, Tempel Elmo, Tamm Antti
doaj +1 more source
The Astrophysical Journal, 2023 Understanding the formation of the supermassive black holes (SMBHs) present in the centers of galaxies is a crucial topic in modern astrophysics. Observations have detected SMBHs with masses of 10 ^9 M _⊙ in the high-redshift galaxies with z ∼ 7. However,
Chi-Hong Lin +2 more
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Constraining Cosmology with Machine Learning and Galaxy Clustering: The CAMELS-SAM Suite
The Astrophysical Journal, 2023 As the next generation of large galaxy surveys come online, it is becoming increasingly important to develop and understand the machine-learning tools that analyze big astronomical data.
Lucia A. Perez +7 more
doaj +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
The THESEUS Space Mission and the Infrared Telescope Calibration Unit
Astronomische Nachrichten, EarlyView.ABSTRACT The Transient High‐Energy Sky and Early Universe Surveyor (THESEUS) is an ESA M7 mission concept currently in Phase A, designed to exploit gamma‐ray bursts to probe the early Universe while advancing multi‐messenger and time‐domain astrophysics. To achieve its ambitious goals, THESEUS will combine wide‐band x‐ray and gamma‐ray monitors with an
András Péter Joó +9 more
wiley +1 more source