Publications by Peter Hatfield


Observation of He-like Satellite Lines of the H-like Potassium K XIX Emission

ASTROPHYSICAL JOURNAL 881 (2019) ARTN 92

ME Weller, P Beiersdorfer, TE Lockard, GV Brown, A McKelvey, J Nilsen, R Shepherd, VA Soukhanovskii, MP Hill, LMR Hobbs, D Burridge, DJ Hoarty, J Morton, L Wilson, SJ Rose, P Hatfield


Transforming education with the Timepix detector - Ten years of CERN@school

Radiation Measurements Elsevier BV (2019) 106090

B Parker, L Thomas, E Rushton, P Hatfield


The blind implosion-maker: Automated inertial confinement fusion experiment design

PHYSICS OF PLASMAS 26 (2019) ARTN 062706

PW Hatfield, SJ Rose, RHH Scott


First results from the LUCID-Timepix spacecraft payload onboard the TechDemoSat-1 satellite in Low Earth Orbit

Advances in Space Research Elsevier (2018)

W Furnell, A Shenoy, E Fox, PW HATFIELD


The LUCID-Timepix spacecraft payload and the CERN@school educational programme

JOURNAL OF INSTRUMENTATION 13 (2018)

P Hatfield, W Furnell, A Shenoy, E Fox, R Parker, L Thomas


The environment and host haloes of the brightest z~6 Lyman-break galaxies

MNRAS (0)

PW Hatfield, RAA Bowler, MJ Jarvis, CL Hale

By studying the large-scale structure of the bright high-redshift Lyman-break galaxy (LBG) population it is possible to gain an insight into the role of environment in galaxy formation physics in the early Universe. We measure the clustering of a sample of bright ($-22.7<M_{UV}<-21.125$) LBGs at $z\sim6$ and use a halo occupation distribution (HOD) model to measure their typical halo masses. We find that the clustering amplitude and corresponding HOD fits suggests that these sources are highly biased ($b\sim10$) objects in the densest regions of the high-redshift Universe. Coupled with the observed rapid evolution of the number density of these objects, our results suggest that the shape of high luminosity end of the luminosity function is related to feedback processes or the onset of dust obscuration - as opposed to a scenario where these sources are predominantly rare instances of the much more numerous $M_{UV} \sim -19$ population of galaxies caught in a particularly vigorous period of star formation. Despite investigating several variations on the model, we struggle to simultaneously fit both the number densities and clustering measurements. We interpret this as a signal that a refinement of the model halo bias relation at high redshifts or the incorporation of quasi-linear effects may be needed for future attempts at modelling the clustering and number counts. Finally, the difference in number density between the fields (UltraVISTA has a surface density$\sim 1.8$ times greater than UDS) is shown to be consistent with the cosmic variance implied by the clustering measurements.


The clustering and bias of radio-selected AGN and star-forming galaxies in the COSMOS field

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 474 (2018) 4133-4150

CL Hale, MJ Jarvis, I Delvecchio, PW Hatfield, M Novak, V Smolcic, G Zamorani


Extragalactic optical and near-infrared foregrounds to 21-cm epoch of reionisation experiments

PEERING TOWARDS COSMIC DAWN 12 (2018) 183-190

MJ Jarvis, RAA Bowler, PW Hatfield


Environmental quenching and galactic conformity in the galaxy cross-correlation signal

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 472 (2017) 3570-3588

PW Hatfield, MJ Jarvis


The MeerKAT international GHz tiered extragalactic exploration (MIGHTEE) survey

Proceedings of Science (2016)

MJ Jarvis, AR Taylor, I Agudo, JR Allison, RP Deane, B Frank, N Gupta, I Heywood, N Maddox, K McAlpine, MG Santos, AMM Scaife, M Vaccari, JTL Zwart, E Adams, DJ Bacon, AJ Baker, BA Bassett, PN Best, R Beswick, S Blyth, ML Brown, M Brüggen, M Cluver, S Colafranceso, G Cotter, C Cress, R Davé, C Ferrari, MJ Hardcastle, C Hale, I Harrison, PW Hatfield, HR Klöckner, S Kolwa, E Malefahlo, T Marubini, T Mauch, K Moodley, R Morganti, R Norris, JA Peters, I Prandoni, M Prescott, S Oliver, N Oozeer, HJA Röttgering, N Seymour, C Simpson, O Smirnov, DJB Smith, K Spekkens, J Stil, C Tasse, K van der Heyden, IH Whittam, WL WIlliams

© Copyright owned by the author(s). The MIGHTEE large survey project will survey four of the most well-studied extragalactic deep fields, totalling 20 square degrees to µJy sensitivity at Giga-Hertz frequencies, as well as an ultra-deep image of a single ∼1 deg2 MeerKAT pointing. The observations will provide radio continuum, spectral line and polarisation information. As such, MIGHTEE, along with the excellent multi-wavelength data already available in these deep fields, will allow a range of science to be achieved. Specifically, MIGHTEE is designed to significantly enhance our understanding of, (i) the evolution of AGN and star-formation activity over cosmic time, as a function of stellar mass and environment, free of dust obscuration; (ii) the evolution of neutral hydrogen in the Universe and how this neutral gas eventually turns into stars after moving through the molecular phase, and how efficiently this can fuel AGN activity; (iii) the properties of cosmic magnetic fields and how they evolve in clusters, filaments and galaxies. MIGHTEE will reach similar depth to the planned SKA all-sky survey, and thus will provide a pilot to the cosmology experiments that will be carried out by the SKA over a much larger survey volume.


The galaxy-halo connection in the VIDEO survey at 0.5 < z < 1.7

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 459 (2016) 2618-2631

PW Hatfield, SN Lindsay, MJ Jarvis, B Haussler, M Vaccari, A Verma


The MeerKAT international GHz tiered extragalactic exploration (MIGHTEE) survey

Proceedings of Science Part F138095 (2016)

MJ Jarvis, AR Taylor, I Agudo, JR Allison, RP Deane, B Frank, N Gupta, I Heywood, N Maddox, K McAlpine, MG Santos, AMM Scaife, M Vaccari, JTL Zwart, E Adams, DJ Bacon, AJ Baker, BA Bassett, PN Best, R Beswick, S Blyth, ML Brown, M Brüggen, M Cluver, S Colafranceso, G Cotter, C Cress, R Davé, C Ferrari, MJ Hardcastle, C Hale, I Harrison, PW Hatfield, HR Klöckner, S Kolwa, E Malefahlo, T Marubini, T Mauch, K Moodley, R Morganti, R Norris, JA Peters, I Prandoni, M Prescott, S Oliver, N Oozeer, HJA Röttgering, N Seymour, C Simpson, O Smirnov, DJB Smith, K Spekkens, J Stil, C Tasse, K van der Heyden, IH Whittam, WL WIlliams

© Copyright owned by the author(s). The MIGHTEE large survey project will survey four of the most well-studied extragalactic deep fields, totalling 20 square degrees to µJy sensitivity at Giga-Hertz frequencies, as well as an ultra-deep image of a single ∼1 deg2MeerKAT pointing. The observations will provide radio continuum, spectral line and polarisation information. As such, MIGHTEE, along with the excellent multi-wavelength data already available in these deep fields, will allow a range of science to be achieved. Specifically, MIGHTEE is designed to significantly enhance our understanding of, (i) the evolution of AGN and star-formation activity over cosmic time, as a function of stellar mass and environment, free of dust obscuration; (ii) the evolution of neutral hydrogen in the Universe and how this neutral gas eventually turns into stars after moving through the molecular phase, and how efficiently this can fuel AGN activity; (iii) the properties of cosmic magnetic fields and how they evolve in clusters, filaments and galaxies. MIGHTEE will reach similar depth to the planned SKA all-sky survey, and thus will provide a pilot to the cosmology experiments that will be carried out by the SKA over a much larger survey volume.


The rich are different: evidence from the RAVE survey for stellar radial migration

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 447 (2015) 3526-3535

G Kordopatis, J Binney, G Gilmore, RFG Wyse, V Belolcurov, PJ McMillan, P Hatfield, EK Grebel, M Steinmetz, JF Navarro, G Seabroke, I Minchev, C Chiappini, O Bienayme, J Bland-Hawthorn, KC Freeman, BK Gibson, A Helmi, U Munari, Q Parker, WA Reid, A Siebert, A Siviero, T Zwitter