Search Results - "Intema, Huib T"
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The angular power spectrum measurement of the Galactic synchrotron emission in two fields of the TGSS survey
Published in Monthly notices of the Royal Astronomical Society. Letters (01-09-2017)“…Abstract Characterizing the diffuse Galactic synchrotron emission at arcminute angular scales is needed to reliably remove foregrounds in cosmological 21-cm…”
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2
Calibration of Ultraviolet, Mid-infrared, and Radio Star Formation Rate Indicators
Published in The Astrophysical journal (01-10-2017)“…We present calibrations for star formation rate (SFR) indicators in the ultraviolet, mid-infrared, and radio-continuum bands, including one of the first direct…”
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3
Low-frequency radio study of MACS clusters at 610 and 235 MHz using the GMRT
Published in Monthly notices of the Royal Astronomical Society (11-10-2019)“…Abstract Studies have shown that mergers of massive galaxy clusters produce shocks and turbulence in the intracluster medium, these events possibly creating…”
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4
All-sky angular power spectrum – I. Estimating brightness temperature fluctuations using the 150-MHz TGSS survey
Published in Monthly notices of the Royal Astronomical Society (11-05-2020)“…ABSTRACT Measurements of the Galactic synchrotron emission are important for the 21-cm studies of the epoch of reionization. The study of synchrotron emission…”
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5
FR II radio galaxies at low frequencies – I. Morphology, magnetic field strength and energetics
Published in Monthly notices of the Royal Astronomical Society (01-06-2016)“…Due to their steep spectra, low-frequency observations of Fanaroff–Riley type II (FR II) radio galaxies potentially provide key insights in to the morphology,…”
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6
A low-frequency radio halo survey of the South Pole Telescope SZ-selected clusters with the GMRT
Published in Monthly notices of the Royal Astronomical Society (01-01-2021)“…ABSTRACT The presence of non-thermal electrons and large-scale magnetic fields in the intracluster medium is known through the detection of megaparsec (Mpc)…”
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Limits on long-time-scale radio transients at 150 MHz using the TGSS ADR1 and LoTSS DR2 catalogues
Published in Monthly notices of the Royal Astronomical Society (01-12-2021)“…ABSTRACT We present a search for transient radio sources on time-scales of 2–9 yr at 150 MHz. This search is conducted by comparing the first Alternative Data…”
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8
Gentle reenergization of electrons in merging galaxy clusters
Published in Science advances (01-10-2017)“…Galaxy clusters are the most massive constituents of the large-scale structure of the universe. Although the hot thermal gas that pervades galaxy clusters is…”
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9
Black hole jets on the scale of the cosmic web
Published in Nature (London) (19-09-2024)“…When sustained for megayears (refs. 1 , 2 ), high-power jets from supermassive black holes (SMBHs) become the largest galaxy-made structures in the Universe 3…”
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10
What are the megahertz peaked-spectrum sources?
Published in Monthly notices of the Royal Astronomical Society (01-07-2016)“…Megahertz peaked-spectrum (MPS) sources have spectra that peak at frequencies below 1 GHz in the observer's frame and are believed to be radio-loud active…”
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New insights from deep VLA data on the potentially recoiling black hole CID-42 in the COSMOS field
Published in Monthly notices of the Royal Astronomical Society (21-02-2015)“…We present deep 3-GHz Karl G. Jansky Very Large Array (VLA) observations of the potentially recoiling black hole CID-42 in the Cosmic Evolution Survey (COSMOS)…”
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12
Filaments in the southern giant lobe of Centaurus A: constraints on nature and origin from modelling and GMRT observations
Published in Monthly notices of the Royal Astronomical Society (21-08-2014)“…We present results from imaging of the radio filaments in the southern giant lobe of Centaurus A using data from Giant Metrewave Radio Telescope observations…”
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13
Observations of a pre-merger shock in colliding clusters of galaxies
Published in Nature astronomy (01-09-2019)“…Clusters of galaxies are the largest known gravitationally bound structures in the Universe. When clusters collide, they create merger shocks on cosmological…”
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14
All sky angular power spectrum: I. Estimating brightness temperature fluctuations using TGSS 150 MHz survey
Published 20-03-2020“…2020, MNRAS, 494, 1936 Measurements of the Galactic synchrotron emission is relevant for the 21-cm studies from the Epoch of Reionization. The study of the…”
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15
Radio spectra of bright compact sources at z > 4.5
Published in Monthly notices of the Royal Astronomical Society (25-01-2017)“…Abstract High-redshift quasars are important to study galaxy and active galactic nuclei evolution, test cosmological models and study supermassive black hole…”
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16
Understanding the Nature of the Ultra-Steep Spectrum Diffuse Radio Source in the Galaxy Cluster Abell 272
Published 07-02-2024“…Ultra-steep spectrum (USS) radio sources with complex filamentary morphologies are a poorly understood subclass of diffuse radio source found in galaxy…”
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Black hole jets on the scale of the Cosmic Web
Published 13-11-2024“…Nature, 2024, Volume 633, Issue 8030, Pages 537--541 Jets launched by supermassive black holes transport relativistic leptons, magnetic fields, and atomic…”
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Low-frequency radio study of MACS clusters at 610 and 235 MHz using the GMRT
Published 12-07-2019“…Monthly Notices of the Royal Astronomical Society, 2019, Volume 489, Issue 1: pp. 446 Studies have shown that mergers of massive galaxy clusters produce shocks…”
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The radio spectral turnover of radio-loud quasars at $z>5
Published 06-12-2021“…A&A 659, A159 (2022) We present Karl G. Jansky Very Large Array (VLA) S- (2--4 GHz), C- (4--8 GHz), and X-band (8--12 GHz) continuum observations toward seven…”
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Limits on long-time-scale radio transients at 150 MHz using the TGSS ADR1 and LoTSS DR2 catalogues
Published 13-10-2021“…MNRAS, Volume 508, Issue 2, December 2021, Pages 2412-2425 We present a search for transient radio sources on timescales of 2 to 9 yr at 150 MHz. This search…”
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