Subarcsecond-resolution Imaging of M51 with the International LOFAR Telescope (2023)
Journal Article
Venkattu, D., Lundqvist, P., Torres, M. P., Morabito, L., Moldón, J., Conway, J., …Tasse, C. (2023). Subarcsecond-resolution Imaging of M51 with the International LOFAR Telescope. Astrophysical Journal, 953(2), Article 157. https://doi.org/10.3847/1538-4357/ace2c1

We present an International LOFAR Telescope (ILT) subarcsecond-resolution image of the nearby galaxy M51 with a beam size of 0farcs436 × 0farcs366 and rms of 46 μJy. We compare this image with a European VLBI Network study of M51 and discuss the supe... Read More about Subarcsecond-resolution Imaging of M51 with the International LOFAR Telescope.

A Quick Look at the 3 GHz Radio Sky. II. Hunting for DRAGNs in the VLA Sky Survey (2023)
Journal Article
Gordon, Y. A., Rudnick, L., Andernach, H., Morabito, L. K., O’Dea, C. P., Achong, K., …Vantyghem, A. N. (2023). A Quick Look at the 3 GHz Radio Sky. II. Hunting for DRAGNs in the VLA Sky Survey. Astrophysical Journal Supplement, 267(2), Article 37. https://doi.org/10.3847/1538-4365/acda30

Active galactic nuclei (AGNs) can often be identified in radio images as two lobes, sometimes connected to a core by a radio jet. This multicomponent morphology unfortunately creates difficulties for source finders, leading to components that are (a)... Read More about A Quick Look at the 3 GHz Radio Sky. II. Hunting for DRAGNs in the VLA Sky Survey.

VLBI imaging of high-redshift galaxies and protoclusters at low radio frequencies with the International LOFAR Telescope (2023)
Journal Article
Cordun, C. M., Timmerman, R., Miley, G. K., van Weeren, R. J., Sweijen, F., Morabito, L. K., & Röttgering, H. J. A. (2023). VLBI imaging of high-redshift galaxies and protoclusters at low radio frequencies with the International LOFAR Telescope. Astronomy & Astrophysics, 676, Article A29. https://doi.org/10.1051/0004-6361/202346320

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 at such objects to demonstrate the feasibility and impo... Read More about VLBI imaging of high-redshift galaxies and protoclusters at low radio frequencies with the International LOFAR Telescope.

Cosmic evolution of radio-AGN feedback: confronting models with data (2023)
Journal Article
Kondapally, R., Best, P. N., Raouf, M., Thomas, N. L., Davé, R., Shabala, S. S., …Smith, D. J. B. (2023). Cosmic evolution of radio-AGN feedback: confronting models with data. Monthly Notices of the Royal Astronomical Society, 523(4), 5292-5305. https://doi.org/10.1093/mnras/stad1813

The MillenniumTNG Project: Intrinsic alignments of galaxies and halos (2023)
Journal Article
Delgado, A. M., Hadzhiyska, B., Bose, S., Springel, V., Hernquist, L., Barrera, M., …Frenk, C. (2023). The MillenniumTNG Project: Intrinsic alignments of galaxies and halos. Monthly Notices of the Royal Astronomical Society, 523(4), 5899–5914. https://doi.org/10.1093/mnras/stad1781

The intrinsic alignment (IA) of observed galaxy shapes with the underlying cosmic web is a source of contamination in weak lensing surveys. Sensitive methods to identify the IA signal will therefore need to be included in the upcoming weak lensing an... Read More about The MillenniumTNG Project: Intrinsic alignments of galaxies and halos.

The Magnificent Five Images of Supernova Refsdal: Time Delay and Magnification Measurements (2023)
Journal Article
Kelly, P. L., Rodney, S., Treu, T., Birrer, S., Bonvin, V., Dessart, L., …Wambsganss, J. (2023). The Magnificent Five Images of Supernova Refsdal: Time Delay and Magnification Measurements. Astrophysical Journal, 948(2), Article 93. https://doi.org/10.3847/1538-4357/ac4ccb

In late 2014, four images of supernova (SN) "Refsdal," the first known example of a strongly lensed SN with multiple resolved images, were detected in the MACS J1149 galaxy-cluster field. Following the images' discovery, the SN was predicted to reapp... Read More about The Magnificent Five Images of Supernova Refsdal: Time Delay and Magnification Measurements.

Upscaling ExaHyPE – on each and every core (2023)
Report
Li, B., Schulz, H., Tuft, A., Weinzierl, T., & Zhang, H. (2023). Upscaling ExaHyPE – on each and every core. ARCHER2

We study a MPI+multithreaded PDE solver for hyperbolic partial differential equations. Each thread per rank handles a subdomain of the computational domain identified by a segment of a space-filling curve. The threads spawn additional tasks which sho... Read More about Upscaling ExaHyPE – on each and every core.

The LOFAR Two-metre Sky Survey: Deep Fields Data Release 1. V. Survey description, source classifications and host galaxy properties (2023)
Journal Article
Best, P., Kondapally, R., Williams, W., Cochrane, R., Duncan, K., Hale, C., …van Weeren, R. (in press). The LOFAR Two-metre Sky Survey: Deep Fields Data Release 1. V. Survey description, source classifications and host galaxy properties. Monthly Notices of the Royal Astronomical Society, https://doi.org/10.1093/mnras/stad1308

Source classifications, stellar masses and star formation rates are presented for ≈80,000 radio sources from the first data release of the Low Frequency Array Two-metre Sky Survey (LoTSS) Deep Fields, which represents the widest deep radio survey eve... Read More about The LOFAR Two-metre Sky Survey: Deep Fields Data Release 1. V. Survey description, source classifications and host galaxy properties.

The progenitor galaxies of stellar haloes as ‘failed’ Milky Ways (2023)
Journal Article
Bose, S., & Deason, A. J. (2023). The progenitor galaxies of stellar haloes as ‘failed’ Milky Ways. Monthly Notices of the Royal Astronomical Society, 522(4), 5013-5021. https://doi.org/10.1093/mnras/stad1123

The stellar halo of the Milky Way records the history of its interactions with dwarf galaxies, whose subsequent destruction results in the formation of an extended stellar component. Recent works have suggested that galaxies with masses comparable to... Read More about The progenitor galaxies of stellar haloes as ‘failed’ Milky Ways.

Galaxy clustering from the bottom up: A Streaming Model emulator I (2023)
Journal Article
Cuesta-Lazaro, C., Nishimichi, T., Kobayashi, Y., Ruan, C., Eggemeier, A., Miyatake, H., …Li, B. (in press). Galaxy clustering from the bottom up: A Streaming Model emulator I. Monthly Notices of the Royal Astronomical Society, https://doi.org/10.1093/mnras/stad1207

In this series of papers, we present a simulation-based model for the non-linear clustering of galaxies based on separate modelling of clustering in real space and velocity statistics. In the first paper, we present an emulator for the real-space cor... Read More about Galaxy clustering from the bottom up: A Streaming Model emulator I.

RXJ0437+00: constraining dark matter with exotic gravitational lenses (2023)
Journal Article
Lagattuta, D. J., Richard, J., Ebeling, H., Basto, Q., Cerny, C., Edge, A., …Massey, R. (2023). RXJ0437+00: constraining dark matter with exotic gravitational lenses. Monthly Notices of the Royal Astronomical Society, 522(1), 1091-1107. https://doi.org/10.1093/mnras/stad803

We present the first strong-gravitational-lensing analysis of the galaxy cluster RX J0437.1+0043 (RXJ0437; z = 0.285). Newly obtained, deep MUSE observations, Keck/MOSFIRE near-infrared spectroscopy, and Hubble Space Telescope SNAPshot imaging reveal... Read More about RXJ0437+00: constraining dark matter with exotic gravitational lenses.

Overview of the DESI Milky Way Survey (2023)
Journal Article
Cooper, A. P., Koposov, S. E., Allende Prieto, C., Manser, C. J., Kizhuprakkat, N., Myers, A. D., …Zou, H. (2023). Overview of the DESI Milky Way Survey. Astrophysical Journal, 947(1), Article 37. https://doi.org/10.3847/1538-4357/acb3c0

We describe the Milky Way Survey (MWS) that will be undertaken with the Dark Energy Spectroscopic Instrument (DESI) on the Mayall 4 m telescope at the Kitt Peak National Observatory. Over the next 5 yr DESI MWS will observe approximately seven millio... Read More about Overview of the DESI Milky Way Survey.

Abell 1201: detection of an ultramassive black hole in a strong gravitational lens (2023)
Journal Article
Nightingale, J., Smith, R. J., He, Q., O’Riordan, C. M., Kegerreis, J. A., Amvrosiadis, A., …Massey, R. J. (2023). Abell 1201: detection of an ultramassive black hole in a strong gravitational lens. Monthly Notices of the Royal Astronomical Society, 521(3), 3298-3322. https://doi.org/10.1093/mnras/stad587

Supermassive black holes (SMBHs) are a key catalyst of galaxy formation and evolution, leading to an observed correlation between SMBH mass MBH and host galaxy velocity dispersion σe. Outside the local Universe, measurements of MBH are usually only p... Read More about Abell 1201: detection of an ultramassive black hole in a strong gravitational lens.

The complex interplay of AGN jet-inflated bubbles and the intracluster medium (2023)
Journal Article
Huško, F., & Lacey, C. G. (2023). The complex interplay of AGN jet-inflated bubbles and the intracluster medium. Monthly Notices of the Royal Astronomical Society, 521(3), 4375-4394. https://doi.org/10.1093/mnras/stad793

We use SWIFT, a smoothed particle hydrodynamics code, to simulate the evolution of bubbles inflated by active galactic nuclei (AGNs) jets, as well as their interactions with the ambient intracluster medium (ICM). These jets inflate lobes that turn in... Read More about The complex interplay of AGN jet-inflated bubbles and the intracluster medium.

The PAU Survey and Euclid: Improving broadband photometric redshifts with multi-task learning (2023)
Journal Article
Cabayol, L., Eriksen, M., Carretero, J., Casas, R., Castander, F., Fernández, E., …Tramacere, A. (2023). The PAU Survey and Euclid: Improving broadband photometric redshifts with multi-task learning. Astronomy & Astrophysics, 671, Article A153. https://doi.org/10.1051/0004-6361/202245027

Current and future imaging surveys require photometric redshifts (photo-zs) to be estimated for millions of galaxies. Improving the photo-z quality is a major challenge but is needed to advance our understanding of cosmology. In this paper we explore... Read More about The PAU Survey and Euclid: Improving broadband photometric redshifts with multi-task learning.

Hidden depths in the local Universe: The Stellar Stream Legacy Survey (2023)
Journal Article
Martínez-Delgado, D., Cooper, A. P., Román, J., Pillepich, A., Erkal, D., Pearson, S., …Valdes, F. G. (2023). Hidden depths in the local Universe: The Stellar Stream Legacy Survey. Astronomy & Astrophysics, 671, Article A141. https://doi.org/10.1051/0004-6361/202245011

Context. Mergers and tidal interactions between massive galaxies and their dwarf satellites are a fundamental prediction of the Lambda-cold dark matter cosmology. These events are thought to provide important observational diagnostics of non-linear s... Read More about Hidden depths in the local Universe: The Stellar Stream Legacy Survey.

Identifying Active Galactic Nuclei at z ∼ 3 from the HETDEX Survey Using Machine Learning (2023)
Journal Article
Tardugno Poleo, V., Finkelstein, S. L., Leung, G., Mentuch Cooper, E., Gebhardt, K., Farrow, D. J., …Liu, C. (2023). Identifying Active Galactic Nuclei at z ∼ 3 from the HETDEX Survey Using Machine Learning. Astronomical Journal, 165(4), Article 153. https://doi.org/10.3847/1538-3881/acba92

We used data from the Hobby–Eberly Telescope Dark Energy Experiment (HETDEX) to study the incidence of AGN in continuum-selected galaxies at z ∼ 3. From optical and infrared imaging in the 24 deg2 Spitzer HETDEX Exploratory Large Area survey, we cons... Read More about Identifying Active Galactic Nuclei at z ∼ 3 from the HETDEX Survey Using Machine Learning.

Bringing Stellar Evolution and Feedback Together: Summary of Proposals from the Lorentz Center Workshop (2023)
Journal Article
Geen, S., Agrawal, P., Crowther, P. A., Keller, B., de Koter, A., Keszthelyi, Z., …Winch, E. (2023). Bringing Stellar Evolution and Feedback Together: Summary of Proposals from the Lorentz Center Workshop. Publications of the Astronomical Society of the Pacific, 135(1044), Article 021001. https://doi.org/10.1088/1538-3873/acb6b5

Stars strongly impact their environment, and shape structures on all scales throughout the universe, in a process known as "feedback." Due to the complexity of both stellar evolution and the physics of larger astrophysical structures, there remain ma... Read More about Bringing Stellar Evolution and Feedback Together: Summary of Proposals from the Lorentz Center Workshop.

Piercing the dusty veil of hyper-luminous infrared galaxies: Sub-arcsecond 144 MHz ILT observations of HLIRGs in the Lockman Hole (2023)
Journal Article
Sweijen, F., Lyu, Y., Wang, L., Gao, F., Röttgering, H., van Weeren, R., …Bondi, M. (2023). Piercing the dusty veil of hyper-luminous infrared galaxies: Sub-arcsecond 144 MHz ILT observations of HLIRGs in the Lockman Hole. Astronomy & Astrophysics, 671, Article A85. https://doi.org/10.1051/0004-6361/202244378

Context. Hyper-luminous infrared galaxies (HLIRGs) are among the most extreme systems in the Universe. With infrared (IR) luminosities of LIR > 1013 L⊙ they can have IR-derived star formation rates (SFRs) exceeding 103 M⊙ yr−1. Theoretical models hav... Read More about Piercing the dusty veil of hyper-luminous infrared galaxies: Sub-arcsecond 144 MHz ILT observations of HLIRGs in the Lockman Hole.

Velocity-dependent J-factors for Milky Way dwarf spheroidal analogues in cosmological simulations (2023)
Journal Article
Blanchette, K., Piccirillo, E., Bozorgnia, N., Strigari, L. E., Fattahi, A., Frenk, C. S., …Sawala, T. (2023). Velocity-dependent J-factors for Milky Way dwarf spheroidal analogues in cosmological simulations. Journal of Cosmology and Astroparticle Physics, 2023(03), Article 021. https://doi.org/10.1088/1475-7516/2023/03/021

We study the impact of the dark matter velocity distribution modelling on signals from velocity-dependent dark matter annihilation in Milky Way dwarf spheroidal galaxies. Using the high resolution APOSTLE simulations, we identify analogues correspond... Read More about Velocity-dependent J-factors for Milky Way dwarf spheroidal analogues in cosmological simulations.