Changing-look active galactic nuclei

C Ricci, B Trakhtenbrot - Nature Astronomy, 2023 - nature.com
Active galactic nuclei (AGNs) are known to show flux variability over all observable
timescales and across the entire electromagnetic spectrum. Over the past decade, a growing …

f (T) teleparallel gravity and cosmology

YF Cai, S Capozziello, M De Laurentis… - Reports on Progress …, 2016 - iopscience.iop.org
Over recent decades, the role of torsion in gravity has been extensively investigated along
the main direction of bringing gravity closer to its gauge formulation and incorporating spin …

DESI 2024 VI: Cosmological constraints from the measurements of baryon acoustic oscillations

AG Adame, J Aguilar, S Ahlen, S Alam… - … of Cosmology and …, 2025 - iopscience.iop.org
We present cosmological results from the measurement of baryon acoustic oscillations
(BAO) in galaxy, quasar and Lyman-α forest tracers from the first year of observations from …

Simulating galaxy formation with the IllustrisTNG model

A Pillepich, V Springel, D Nelson… - Monthly Notices of …, 2018 - academic.oup.com
We introduce an updated physical model to simulate the formation and evolution of galaxies
in cosmological, large-scale gravity+ magnetohydrodynamical simulations with the moving …

The data reduction pipeline for the SDSS-IV MaNGA IFU galaxy survey

DR Law, B Cherinka, R Yan, BH Andrews… - The Astronomical …, 2016 - iopscience.iop.org
ABSTRACT Map** Nearby Galaxies at Apache Point Observatory (MaNGA) is an optical
fiber-bundle integral-field unit (IFU) spectroscopic survey that is one of three core programs …

Photometric redshifts for Hyper Suprime-Cam Subaru strategic program data release 1

M Tanaka, J Coupon, BC Hsieh, S Mineo… - Publications of the …, 2018 - academic.oup.com
Photometric redshifts are a key component of many science objectives in the Hyper Suprime-
Cam Subaru Strategic Program (HSC-SSP). In this paper, we describe and compare the …

The tenth data release of the sloan digital sky survey: First spectroscopic data from the sdss-iii apache point observatory galactic evolution experiment

CP Ahn, R Alexandroff, CA Prieto… - The Astrophysical …, 2014 - iopscience.iop.org
The Sloan Digital Sky Survey (SDSS) has been in continuous operation since 2000 April. It
uses a dedicated wide-field 2.5 m telescope (Gunn et al. 2006) at Apache Point Observatory …

The discovery of the first “changing look” quasar: new insights into the physics and phenomenology of active galactic nuclei

SM LaMassa, S Cales, EC Moran… - The Astrophysical …, 2015 - iopscience.iop.org
ABSTRACT SDSS J015957. 64+ 003310.5 is an X-ray selected, z= 0.31 active galactic
nucleus (AGN) from the Stripe 82X survey that transitioned from a Type 1 quasar to a Type …

The mass–metallicity relation with the direct method on stacked spectra of SDSS galaxies

BH Andrews, P Martini - The Astrophysical Journal, 2013 - iopscience.iop.org
The relation between galaxy stellar mass and gas-phase metallicity is a sensitive diagnostic
of the main processes that drive galaxy evolution, namely cosmological gas inflow, metal …

The Sydney-AAO multi-object integral field spectrograph

SM Croom, JS Lawrence… - Monthly Notices of …, 2012 - academic.oup.com
We demonstrate a novel technology that combines the power of the multi-object
spectrograph with the spatial multiplex advantage of an integral field spectrograph (IFS). The …