activity
20202026
most citedDiscovery of 24 radio-bright quasars at using low-frequency radio observations

42 citations · 141 across the 20 of their papers we have counts for

collaborators

22 papers

astro-ph.GA2026

: a close quasar pair at cosmic dawn in the Aether survey

Silvia Onorato, Emanuele Paolo Farina, Roberto Decarli +32

We present the discovery and first characterization of : the most compact known quasar pair candidate in the Epoch of Reionization, with a projected se…

astro-ph.GA2026

Radio Quasars in the Cosmic Dawn: A Spectroscopic Sample from the DESI Survey

Anniek J. Gloudemans, Jinyi Yang, David M. Alexander +55

We present the largest statistical spectroscopic sample of radio quasars at 4.7<z<6.7 to date. These have been selected from a dedicated Dark Energy Survey Instrument (DESI) target…

astro-ph.GA2026

Extreme Enrichment at Cosmic Dawn: Three FeII-Strong Quasars at z > 6 from the JWST Aether survey

Anniek J. Gloudemans, Emanuele Paolo Farina, Roberto Decarli +22

We present three outliers on the quasar main sequence at z>6, as revealed by JWST/NIRSpec IFU observations from the Aether survey, a program targeting ~200 quasars at cosmic dawn.…

astro-ph.HE2026

Rapid radio variability in the blazar VLASS J04100139: Indication of a hidden population of weak radio jets at Cosmic Dawn

Silvia Belladitta, Eduardo Bañados, Anniek J. Gloudemans +7

Doppler boosting allows blazars to be detected out to high-, making them promising probes of the intergalactic medium through the 21 cm forest. We report 0.14411 GHz observat…

astro-ph.GA2026

To be lensed or not to be lensed: on the nature of the alleged high-z lensed quasars J0109-5424 and P170+20

Aurora Mata-Sanchez, Emanuele P. Farina, Anniek J. Gloudemans +17

We present a detailed multi-wavelength analysis of two gravitationally lensed z>6 quasar candidates: J0109-5424 and P170+20. Using JWST/NIRSpec near-infrared data from the Aether s…

astro-ph.GA2026

Rapid growth in a dual AGN during a gas-rich merger at z~4.5

Hyewon Suh, Roberto Decarli, Emanuele Paolo Farina +15

The late stages of galaxy mergers - when two supermassive black holes (SMBHs) reach kiloparsec-scale separations - represent a critical phase for understanding SMBH growth, galaxy…

astro-ph.GA2026

Radio-detected Lya emitters at 1.88 < z < 3.52: AGN fraction and Lya emission

Sai Zhai, Huub Röttgering, Anniek J. Gloudemans +10

Lya emitters (LAEs) are galaxies with strong Lya emission, tracing early star formation and ionizing radiation. Their connection to active galactic nuclei (AGNs) is key to understa…

astro-ph.GA2026

Aether-SHELLQs: JWST integral-field spectroscopy of candidate obscured quasars at z ~ 6

Yoshiki Matsuoka, Roberto Decarli, Emanuele Paolo Farina +12

We present James Webb Space Telescope (JWST) NIRSpec integral field unit (IFU) observations of six galaxies at , obtained as part of the Aether project (General Observers…

astro-ph.GA2026

A 6.2 Quasar on the Local M- Relation Quenching Its Host Galaxy from the Aether Survey

Weizhe Liu, Emanuele Paolo Farina, Xiaohui Fan +19

We report JWST/NIRSpec integral field unit (IFU) observations of the quasar J15124422 at from the Aether survey. At 900 Myr after the Big Bang, this object al…

astro-ph.GA2025★ 1 cited

Beneath the Surface: >85% of z>5.9 QSOs in Massive Host Galaxies are UV-Faint

R. J. Bouwens, E. Banados, R. Decarli +20

We use [CII] observations of a large quasi-stellar object (QSO) sample to segregate sources by host galaxy mass, aiming to identify those in the most massive hosts. [CII] luminosit…

astro-ph.GA2025

The evolution of extragalactic peaked-spectrum sources down to 54 megahertz

Sai Zhai, Anniek J. Gloudemans, Gülay Gürkan +4

Peaked-spectrum (PS) sources, known for their distinct peaked radio spectra, represent a type of radio-loud active galactic nuclei (AGN). Among these, megahertz-peaked spectrum (MP…

astro-ph.GA2025★ 19 cited

Another piece to the puzzle: radio detection of a JWST detected AGN candidate

Anniek J. Gloudemans, Kenneth J. Duncan, Anna-Christina Eilers +5

Radio observations can provide crucial insight into the nature of a new abundant and mysterious population of dust-reddened active galactic nuclei (AGN) candidates discovered by th…

astro-ph.GA2024★ 6 cited

Monster radio jet (>66 kpc) observed in quasar at z5

Anniek J. Gloudemans, Frits Sweijen, Leah K. Morabito +6

We present the discovery of a large extended radio jet associated with the extremely radio-loud quasar J1601+3102 at from sub-arcsecond resolution imaging at 144 MHz with…

astro-ph.GA2024★ 9 cited

WEAVE First Light Observations: Origin and Dynamics of the Shock Front in Stephan's Quintet

M. I. Arnaudova, S. Das, D. J. B. Smith +62

We present a detailed study of the large-scale shock front in Stephan's Quintet, a byproduct of past and ongoing interactions. Using integral-field spectroscopy from the new Willia…

astro-ph.GA2023★ 7 cited

No strong radio absorption detected in the low-frequency spectra of radio-loud quasars at z > 5.6

A. J. Gloudemans, A. Saxena, H. Intema +7

We present the low-frequency radio spectra of 9 high-redshift quasars at using the Giant Metre Radio Telescope band-3, -4, and -5 observations (300-1200…

astro-ph.SR2023★ 6 cited

Plausible association of distant late M dwarfs with low-frequency radio emission

A. J. Gloudemans, J. R. Callingham, K. J. Duncan +10

We present the serendipitous discovery of 8 distant ( 50 pc) late M dwarfs with plausible associated radio emission at 144 MHz. The M dwarf nature of our sources has been confir…

astro-ph.GA2022★ 39 cited

V-LoTSS: The Circularly-Polarised LOFAR Two-metre Sky Survey

J. R. Callingham, T. W. Shimwell, H. K. Vedantham +44

We present the detection of 68 sources from the most sensitive radio survey in circular polarisation conducted to date. We use the second data release of the 144 MHz LOFAR Two-metr…

astro-ph.GA2022★ 1 cited

High- Quasar Candidate Archive: A Spectroscopic Catalog of Quasars and Contaminants in Various Quasar Searches

Da-Ming Yang, Jan-Torge Schindler, Riccardo Nanni +7

We present the high- quasar candidate archive (HzQCA), summarizing the spectroscopic observations of 174 quasar candidates using Keck/LRIS, Keck/MOSFIRE, and Keck/NI…

astro-ph.GA2022★ 42 cited

Discovery of 24 radio-bright quasars at using low-frequency radio observations

A. J. Gloudemans, K. J. Duncan, A. Saxena +18

High redshift quasars () that also shine brightly at radio wavelengths are unique signposts of supermassive black hole activity in the early universe. However, bright radio so…

astro-ph.GA2021

Low frequency radio properties of the quasar population

A. J. Gloudemans, K. J. Duncan, H. J. A. Röttgering +12

Optically luminous quasars at are important probes of super-massive black hole (SMBH) formation. With new and future radio facilities, the discovery of the brightest low-fr…

astro-ph.EP2021★ 4 cited

Re-evaluation of Lunar X-ray observations by Apollo 15 & 16

Anniek J. Gloudemans, Erik Kuulkers, Riccardo Campana +3

The Apollo 15 & 16 missions were the first to explore the Lunar surface chemistry by investigating about 10% of the Lunar surface using a remote sensing X-ray fluorescence spectrom…

astro-ph.GA2020★ 7 cited

LOFAR properties of SILVERRUSH Ly emitter candidates in the ELAIS-N1 field

A. J. Gloudemans, K. J. Duncan, R. Kondapally +11

Lyman alpha emitters (LAEs) in the Epoch of Reionization (EoR) offer valuable probes of early galaxy evolution and the process of reionization; however, the exact evolution of thei…