Results 111 to 120 of about 4,188,611 (364)
PHOTOMETRIC REDSHIFTS FOR QUASARS IN MULTI-BAND SURVEYS [PDF]
The Astrophysical Journal, 2013 MLPQNA stands for Multi Layer Perceptron with Quasi Newton Algorithm and it is a machine learning method which can be used to cope with regression and classification problems on complex and massive data sets. In this paper we give the formal description of the method and present the results of its application to the evaluation of photometric redshifts ...
Brescia M. +4 more
openaire +10 more sources
Classification and Redshift Estimation in Multi-Color Surveys [PDF]
, 2000 We present a photometric method for identifying stars, galaxies and quasars in multi-color surveys and estimating multi-color redshifts for the extragalactic objects. We use a library of >65000 color templates for comparison with observed objects.
Meisenheimer, Klaus +2 more
core +3 more sources
Optical Whispering‐Gallery Mode as a Fingerprint of Magnetic Ordering in Van der Waals Layered CrSBr
Advanced Functional Materials, EarlyView.A novel nanoscale optomagnetic sensing approach is developed using whispering‐gallery mode resonances in a self‐rolled‐up microcavity. This method enables ultra‐sensitive detection of weak magnetism by correlating resonance shifts with magnetic susceptibility.
Chi Pang +13 more
wiley +1 more source
Reidentification of Redshifts of SDSS Galaxies Overlapped with Galactic Objects
The Astronomical JournalThis work presents a catalog of reidentified redshifts of 853 galaxies for which the redshifts of overlapping foreground objects were registered in the Sloan Digital Sky Survey (SDSS) DR16 Database.
Masafumi Yagi +2 more
doaj +1 more source
Constraints on perfect fluid and scalar field dark energy models from future redshift surveys [PDF]
, 2004 We discuss the constraints that future photometric and spectroscopic redshift surveys can put on dark energy through the baryon oscillations of the power spectrum.
L. Amendola +2 more
semanticscholar +1 more source
Deep Extragalactic X-ray Surveys [PDF]
, 2005 Deep surveys of the cosmic X-ray background are reviewed in the context of observational progress enabled by the Chandra X-ray Observatory and the X-ray Multi-Mirror Mission-Newton.
Brandt WN +14 more
core +1 more source
Advanced Functional Materials, EarlyView.A solution‐processed distributed Bragg reflector (DBR) film, integrated via block copolymer (BCP) self‐assembly, enhances photon recycling in BiVO4 photoanodes for improved photoelectrochemical (PEC) performance. By tuning lamellar structures using lactic acid and cross‐linking density, the DBR film optimally shifts working wavelengths, boosting ...
Shangxian Ding +11 more
wiley +1 more source
Beyond UVJ: Color Selection of Galaxies in the JWST Era
The Astrophysical Journal, 2023 We present a new rest-frame color–color selection method using synthetic u _s − g _s and g _s − i _s , ( ugi ) _s colors to identify star-forming and quiescent galaxies. Our method is similar to the widely used U − V versus V − J ( UVJ ) diagram. However,
Jacqueline Antwi-Danso +10 more
doaj +1 more source
Cosmic Complementarity: H0 and Ωm from Combining Cosmic Microwave Background Experiments and Redshift Surveys [PDF]
, 1998 We show that the detection of acoustic oscillations in both upcoming cosmic microwave background (CMB) satellite experiments and large-redshift surveys can yield 5% determinations of H0 and Ωm, an order-of-magnitude improvement over CMB data alone.
D. Eisenstein, Wayne Hu, Max Tegmark
semanticscholar +1 more source
Radio-continuum surveys with SKA and LOFAR: a first look at the perspectives for radio mini-halos [PDF]
, 2018 Diffuse synchrotron radio emission has been observed in a number of cool-core clusters on scales comparable to that of the cooling region. These radio sources are called `mini-halos'.
Brunetti, Gianfranco +3 more
core +2 more sources