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MeerKAT discovery of a MIGHTEE Odd Radio Circle

Monthly Notices of the Royal Astronomical Society: Letters Oxford University Press (OUP) 537:1 (2024) l42-l48

Authors:

Ray P Norris, Bärbel S Koribalski, Catherine L Hale, Matt J Jarvis, Peter J Macgregor, A Russell Taylor

Constraints on compact objects from the Dark Energy Survey five-year supernova sample

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) (2024) stae2614

Authors:

P Shah, TM Davis, M Vincenzi, P Armstrong, D Brout, R Camilleri, L Galbany, J García-Bellido, MSS Gill, O Lahav, J Lee, C Lidman, A Möller, M Sako, BO Sánchez, M Sullivan, L Whiteway, P Wiseman, S Allam, M Aguena, S Bocquet, D Brooks, DL Burke, A Carnero Rosell, LN da Costa, MES Pereira, S Desai, S Dodelson, P Doel, I Ferrero, B Flaugher, J Frieman, E Gaztanaga, D Gruen, RA Gruendl, G Gutierrez, K Herner, SR Hinton, DL Hollowood, K Honscheid, DJ James, K Kuehn, S Lee, JL Marshall, J Mena-Fernández, R Miquel, J Myles, A Palmese, A Pieres, AA Plazas Malagón, A Roodman, S Samuroff, E Sanchez, I Sevilla-Noarbe, M Smith, E Suchyta, MEC Swanson, G Tarle, C To, V Vikram, N Weaverdyck

Anomaly Detection and Radio-frequency Interference Classification with Unsupervised Learning in Narrowband Radio Technosignature Searches

ArXiv 2411.16556 (2024)

Authors:

Ben Jacobson-Bell, Steve Croft, Carmen Choza, Alex Andersson, Daniel Bautista, Vishal Gajjar, Matthew Lebofsky, David HE MacMahon, Caleb Painter, Andrew PV Siemion

Measurement of the Resolution of the Timepix4 Detector for 100 keV and 200 keV Electrons for Transmission Electron Microscopy

(2024)

Authors:

N Dimova, JS Barnard, D Bortoletto, G Crevatin, M Gallagher-Jones, R Goldsbrough, D Hynds, A Kirkland, L O'Ryan, R Plackett, I Shipsey, D Weatherill, D Wood

Tomographic constraints on the production rate of gravitational waves from astrophysical sources

Physical Review D (particles, fields, gravitation, and cosmology) American Physical Society 110:10 (2024) ARTN 103544

Authors:

David Alonso, Mehraveh Nikjoo, Arianna I Renzini, Emilio Bellini, Pedro G Ferreira

Abstract:

Using an optimal quadratic estimator, we measure the large-scale cross-correlation between maps of the stochastic gravitational-wave intensity, constructed from the first three LIGO-Virgo observing runs, and a suite of tomographic samples of galaxies covering the redshift range z≲2. We do not detect any statistically significant cross-correlation, but the tomographic nature of the data allows us to place constraints on the (bias-weighted) production rate density of gravitational waves by astrophysical sources as a function of cosmic time. Our constraints range from bω˙GW<3.0×10-9 Gyr-1 at z∼0.06 to bω˙GW<2.7×10-7 Gyr-1 at z∼1.5 (95% confidence level), assuming a frequency spectrum of the form f2/3 (corresponding to an astrophysical background of binary mergers), and a reference frequency fref=25 Hz. Although these constraints are ∼2 orders of magnitude higher than the expected signal, we show that a detection may be possible with future experiments.