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20152026
most citedQuasars as standard candles III. Validation of a new sample for cosmological studies

176 citations · 1.5k across the 54 of their papers we have counts for

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Showing 2022Show all

8 papers · 1 filter

astro-ph.IM2022

SIPGI: an interactive pipeline for spectroscopic data reduction

Susanna Bisogni, Adriana Gargiulo, Marco Fumana +5

SIPGI is a spectroscopic pipeline for the data reduction of optical/near-infrared data acquired by slit-based spectrographs. SIPGI is a complete spectroscopic data reduction enviro…

astro-ph.GA2022★ 23 cited

The WISSH quasars project XI. The mean Spectral Energy Distribution and Bolometric Corrections of the most luminous quasars

Ivano Saccheo, Angela Bongiorno, Enrico Piconcelli +18

Hyper-luminous Quasi-Stellar Objects (QSOs) represent the ideal laboratory to investigate Active Galactic Nuclei (AGN) feedback mechanism since their formidable energy release caus…

astro-ph.GA2022★ 11 cited

A powerful (and likely young) radio-loud quasar at z=5.3

S. Belladitta, A. Moretti, A. Caccianiga +5

We present the discovery of PSO J191.0569686.43172 (hereafter PSO J19186), a new powerful radio-loud quasar (QSO) in the early Universe (z = 5.32). We discovered it by cross-…

astro-ph.IM2022★ 19 cited

SIPGI: an interactive pipeline for spectroscopic data reduction

A. Gargiulo, M. Fumana, S. Bisogni +5

We present SIPGI, a spectroscopic pipeline to reduce optical/near-infrared data from slit-based spectrographs. SIPGI is a complete spectroscopic data reduction environment which re…

astro-ph.CO2022★ 30 cited

Quasars as high-redshift standard candles

A. Sacchi, G. Risaliti, M. Signorini +10

The non-linear relation between the X-ray and ultraviolet (UV) luminosity in quasars has been used to derive quasar distances and to build a Hubble diagram at redshifts up to $z\si…

astro-ph.HE2022★ 9 cited

An X-ray fading, UV brightening QSO at

Fabio Vito, Marco Mignoli, Roberto Gilli +13

Explaining the existence of SMBHs at is a persistent challenge to modern astrophysics. Multi-wavelength observations of QSOs revea…

astro-ph.GA2022★ 25 cited

The WISSH quasars project X. Discovery of a multi-component and highly-variable UV ultra-fast outflow in a z=3.6 quasar

G. Vietri, T. Misawa, E. Piconcelli +16

We report on the variability of a multi-component broad absorption line (BAL) system observed in the hyper-luminous quasar J1538+0855 at z=3.6. Observations from SDSS, VLT, LBT and…

astro-ph.GA2022★ 7 cited

The Smallest Scale of Hierarchy Survey (SSH). II. Extended star formation and bar-like features in the dwarf galaxy NGC 3741: recent merger or ongoing gas accretion?

F. Annibali, C. Bacchini, G. Iorio +12

Using Large Binocular Telescope deep imaging data from the Smallest Scale of Hierarchy Survey (SSH) and archival Hubble Space Telescope data, we reveal the presence of two elongate…