- Galaxies: Formation, Evolution, Phenomena
- Radio Astronomy Observations and Technology
- Particle Detector Development and Performance
- Stellar, planetary, and galactic studies
- Astrophysics and Star Formation Studies
- Astronomy and Astrophysical Research
- Radiation Detection and Scintillator Technologies
- Dark Matter and Cosmic Phenomena
- Astrophysics and Cosmic Phenomena
University of Groningen
2024
Netherlands Institute for Radio Astronomy
2024
Leiden University
2023
It is generally known that luminous, ultra-steep spectrum radio sources are preferentially associated with massive galaxies at high redshifts. In this paper, we describe a pilot project directed such objects to demonstrate the feasibility and importance of using LOw-Frequency ARray (LOFAR) data study most distant undergoing formation protoclusters. We successfully imaged four high-redshift ( z > 2), high-luminosity sub-arcsecond resolution, 144 MHz, International LOFAR Telescope (ILT)....
Abstract Using the Karl G. Jansky Very Large Array, we have detected absorption lines due to carbon monoxide, CO( J = 0 → 1), and cyano radical, CN( N associated with radio galaxy B2 0902+34 at redshift z 3.4. The detection of millimeter-band observed 1.5 Gyr after Big Bang facilitates studying molecular clouds down gas masses inaccessible emission-line observations. CO in has a peak optical depth τ ≥ 8.6% consists two components, one which same as previously 21 cm neutral hydrogen (H i )...
It has long been known that luminous, ultra-steep spectrum radio sources are preferentially associated with massive galaxies at high redshifts. Here we describe a pilot project directed such objects, to demonstrate the feasibility and importance of using LOFAR study most distant forming protoclusters. We have successfully imaged four high-redshift ($z>2$) high-luminosity sub-arcsecond resolution, 144 MHz, International Telescope (ILT). Our targets were 4C 41.17 ($z=3.8$), "Anthill", B2...