Astrophysics and Cosmology Research at the Jodrell Bank Centre for Astrophysics 2023-2026

Lead Research Organisation: University of Manchester
Department Name: Physics and Astronomy

Abstract

This grant supports the research of the Jodrell Bank Centre for Astrophysics at the University of Manchester. Our research is a divided into 3 groups. There are too many specific proposals to describe in detail, do below we have given a brief layman's explanation of the work being carried out by the three groups.

Cosmology: This is the study of the Universe as a whole. The main aim is to understand the processes by which the large scale feature of the Universe formed and to constrain the various different kinds of matter that existed within it. These include dark matter and dark energy which are thought to constitute more than 95% of the total. We do this by comparison to observations of weak and strong gravitational lensing which is the distortion of light predicted to be caused by massive objects in Einstein' Theory of General Relativity, the cosmic microwave background which is the faint emission of radiation created at the time when protons and electrons come together to form hydrogen and the emission given off by neutral hydrogen atoms in galaxies. The research we propose here involves both theory and observation as well as the development of the technology necessary to make the observations possible.

Pulsars and Time Domain Astrophysics: The focus of this group is astrophysical signatures that are changing with time - signals which go on and off, often with some kind of regularity. These include Pulsars which are a non-standard star type, known as a neutron star, which is a dead star supported by the quantum pressure of neutrons. The radio emission from these objects pulses on an off with extraordinary regularity allowing them to acts cosmic clocks. The constantly measuring these clocks as the neutron stars spin and move through space, often impacted on by a companion star, allows the most precise constraints on the nature of gravity outside the solar system. Other phenomena studied by this group include Nova explosions, other variable stars, and variability induced by the lensing effects of one star passing in front of another, called microlensing.

Sun, Stars and Galaxies: The researchers in this group study a wide range of astrophysical processes that are reasonable for the formation and evolution of the objects in the name of the group. Specific key areas that the group is interested in are the formation of stars much larger than the Sun and the subsequent evolution, the properties of the so-called interstellar medium (ISM) which comprises molecules not bound to stars and the magnetic fields that permeate space.

Publications

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Jankowski F (2023) A sample of fast radio bursts discovered and localized with MeerTRAP at the MeerKAT telescope in Monthly Notices of the Royal Astronomical Society

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Juodžbalis I (2023) EPOCHS VII: discovery of high-redshift (6.5 < z < 12) AGN candidates in JWST ERO and PEARLS data in Monthly Notices of the Royal Astronomical Society

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Toy M (2023) Rates and properties of Type Ia supernovae in galaxy clusters within the dark energy survey in Monthly Notices of the Royal Astronomical Society

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Varadaraj R (2023) The bright end of the galaxy luminosity function at z ? 7 from the VISTA VIDEO survey in Monthly Notices of the Royal Astronomical Society

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Acharya S (2023) The role of soft photon injection and heating in 21 cm cosmology in Monthly Notices of the Royal Astronomical Society

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Fernández-Torreiro M (2023) QUIJOTE scientific results - X. Spatial variations of Anomalous Microwave Emission along the Galactic plane in Monthly Notices of the Royal Astronomical Society

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Song X (2023) The Thousand-Pulsar-Array programme on MeerKAT - VIII. The subpulse modulation of 1198 pulsars in Monthly Notices of the Royal Astronomical Society

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Chluba J (2023) Spectro-spatial evolution of the CMB. Part II. Generalised Boltzmann hierarchy in Journal of Cosmology and Astroparticle Physics

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De la Hoz E (2023) QUIJOTE scientific results - VIII. Diffuse polarized foregrounds from component separation with QUIJOTE-MFI in Monthly Notices of the Royal Astronomical Society

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Geyer M (2023) Mass measurements and 3D orbital geometry of PSR J1933-6211 in Astronomy & Astrophysics

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Trussler J (2023) On the observability and identification of Population III galaxies with JWST in Monthly Notices of the Royal Astronomical Society

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Keith M (2023) Impact of quasi-periodic and steep-spectrum timing noise on the measurement of pulsar timing parameters in Monthly Notices of the Royal Astronomical Society

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Bhat S (2023) Investigation of a Machine learning methodology for the SKA pulsar search pipeline in Journal of Astrophysics and Astronomy

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Camarena D (2023) Euclid : Testing the Copernican principle with next-generation surveys in Astronomy & Astrophysics

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Sormani M (2023) Fuelling the nuclear ring of NGC 1097 in Monthly Notices of the Royal Astronomical Society

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Smith D (2023) The Third Fermi Large Area Telescope Catalog of Gamma-Ray Pulsars in The Astrophysical Journal

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Herranz D (2023) QUIJOTE scientific results - IX. Radio sources in the QUIJOTE-MFI wide survey maps in Monthly Notices of the Royal Astronomical Society

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Chen G (2023) Star formation in the centre of NGC 1808 as observed by ALMA in Monthly Notices of the Royal Astronomical Society

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Walmsley M (2023) Zoobot: Adaptable Deep Learning Models for Galaxy Morphology in Journal of Open Source Software

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Acharya S (2023) A closer look at dark photon explanations of the excess radio background in Monthly Notices of the Royal Astronomical Society

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Tafoya D (2023) The heart of Sakurai's object revealed by ALMA in Astronomy & Astrophysics

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Golden-Marx J (2023) Characterizing the intracluster light over the redshift range 0.2 < z < 0.8 in the DES-ACT overlap in Monthly Notices of the Royal Astronomical Society

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Willmer C (2023) PEARLS: Near-infrared Photometry in the JWST North Ecliptic Pole Time Domain Field* in The Astrophysical Journal Supplement Series

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Dal Ponte M (2023) Ultracool dwarfs candidates based on 6 yr of the Dark Energy Survey data in Monthly Notices of the Royal Astronomical Society

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Huang ? Q (2023) Estimation of the Flux at 1450 MHz of OB Stars for FAST and SKA in The Astronomical Journal