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Ian Heywood

Senior Researcher in Radio Astronomy

Research theme

  • Astronomy and astrophysics

Sub department

  • Astrophysics

Research groups

  • Galaxy formation and evolution
  • MeerKAT
  • Pulsars, transients and relativistic astrophysics
  • The Square Kilometre Array (SKA)
  • Breakthrough Listen
ian.heywood@physics.ox.ac.uk
github.com/IanHeywood
  • About
  • Galactic Centre Images
  • Publications

A MeerKAT survey of nearby dwarf novae: I. New detections

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) (2025) staf556

Authors:

J Kersten, E Körding, PA Woudt, PJ Groot, DRA Williams, I Heywood, DL Coppejans, C Knigge, JCA Miller-Jones, GR Sivakoff, R Fender
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Non-thermal filaments and AGN recurrent activity in the galaxy group Nest200047: A LOFAR, uGMRT, MeerKAT, and VLA radio spectral analysis

Astronomy & Astrophysics EDP Sciences 696 (2025) a239

Authors:

M Brienza, K Rajpurohit, E Churazov, I Heywood, M Brüggen, M Hoeft, F Vazza, A Bonafede, A Botteon, G Brunetti, F Gastaldello, I Khabibullin, N Lyskova, A Majumder, HJA Röttgering, TW Shimwell, A Simionescu, RJ van Weeren
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The jet paths of radio active galactic nuclei and their cluster weather

Astronomy & Astrophysics EDP Sciences 695 (2025) a178

Authors:

E Vardoulaki, V Backöfer, A Finoguenov, F Vazza, J Comparat, G Gozaliasl, IH Whittam, CL Hale, JR Weaver, AM Koekemoer, JD Collier, B Frank, I Heywood, S Sekhar, AR Taylor, S Pinjarkar, MJ Hardcastle, T Shimwell, M Hoeft, SV White, F An, F Tabatabaei, Z Randriamanakoto, MD Filipovic
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Supernova remnants on the outskirts of the Large Magellanic Cloud

Astronomy & Astrophysics EDP Sciences 693 (2025) l15

Authors:

Manami Sasaki, Federico Zangrandi, Miroslav Filipović, Rami ZE Alsaberi, Jordan D Collier, Frank Haberl, Ian Heywood, Patrick Kavanagh, Bärbel Koribalski, Roland Kothes, Sanja Lazarević, Pierre Maggi, Chandreyee Maitra, Sean Points, Zachary J Smeaton, Velibor Velović
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MIGHTEE: the continuum survey Data Release 1

Monthly Notices of the Royal Astronomical Society Oxford University Press 536:3 (2024) 2187-2211

Authors:

Catherine Hale, Ian Heywood, Matthew Jarvis, Imogen Whittam, Philip Best, Fangxia An, Rebecca Bowler, Ian Harrison, Allison Matthews, Dan Smith, Russ Taylor, Mattia Vaccari

Abstract:

The MeerKAT International GHz Tiered Extragalactic Exploration Survey (MIGHTEE) is one of the large survey projects using the MeerKAT telescope, covering four fields that have a wealth of ancillary data available. We present Data Release 1 of the MIGHTEE continuum survey, releasing total intensity images and catalogues over ∼20 deg2, across three fields at ∼1.2-1.3 GHz. This includes 4.2 deg2 over the Cosmic Evolution Survey (COSMOS) field, 14.4 deg2 over the XMM Large-Scale Structure (XMM-LSS) field and deeper imaging over 1.5 deg2 of the Extended Chandra Deep Field South (CDFS). We release images at both a lower resolution (7–9 arcsec) and higher resolution (∼5 arcsec). These images have central rms sensitivities of ∼1.3 −2.7 μJy beam−1 (∼1.2 −3.6 μJy beam−1) in the lower (higher) resolution images respectively. We also release catalogues comprised of ∼144 000 (∼114 000) sources using the lower (higher) resolution images. We compare the astrometry and flux-density calibration with the Early Science data in the COSMOS and XMM-LSS fields and previous radio observations in the CDFS field, finding broad agreement. Furthermore, we extend the source counts at the ∼10 μJy level to these larger areas (∼20 deg2) and, using the areal coverage of MIGHTEE we measure the sample variance for differing areas of sky. We find a typical sample variance of 10-20percnt for 0.3 and 0.5 sq. deg. sub-regions at S1.4 ≤ 200 μJy, which increases at brighter flux densities, given the lower source density and expected higher galaxy bias for these sources.
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