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Massive stars exploding in a He-rich circumstellar medium. XI. Diverse evolution of five Ibn SNe 2020nxt, 2020taz, 2021bbv, 2023utc and 2024aej

(2025)

Authors:

Z-Y Wang, A Pastorello, Y-Z Cai, M Fraser, A Reguitti, W-L Lin, L Tartaglia, D Andrew Howell, S Benetti, E Cappellaro, Z-H Chen, N Elias-Rosa, J Farah, A Fiore, D Hiramatsu, E Kankare, Z-T Li, P Lundqvist, PA Mazzali, C McCully, J Mo, S Moran, M Newsome, E Padilla Gonzalez, C Pellegrino, Z-H Peng, SJ Smartt, S Srivastav, MD Stritzinger, G Terreran, L Tomasella, G Valerin, G-J Wang, X-F Wang, T de Boer, KC Chambers, H Gao, F-Z Guo, CP Guti'errez, T Kangas, E Karamehmetoglu, G-C Li, C-C Lin, TB Lowe, X-R Ma, EA Magnier, P Minguez, S-P Pei, TM Reynolds, RJ Wainscoat, B Wang, S Williams, C-Y Wu, J-J Zhang, X-H Zhang, X-J Zhu
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Thermal electrons in the radio afterglow of relativistic tidal disruption event ZTF22aaajecp/AT2022cmc

(2025)

Authors:

Lauren Rhodes, Ben Margalit, Joe S Bright, Hannah Dykaar, Rob Fender, David A Green, Daryl Haggard, Assaf Horesh, Alexander J van der Horst, Andrew Hughes, Kunal Mooley, Itai Sfaradi, David Titterington, David WIlliams-Baldwin
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Hi intensity mapping with the MIGHTEE Survey: first results of the Hi power spectrum

Monthly Notices of the Royal Astronomical Society Oxford University Press 541:1 (2025) 476-493

Authors:

Aishrila Mazumder, Laura Wolz, Zhaoting Chen, Sourabh Paul, Mario G Santos, Matt Jarvis, Junaid Townsend, Srikrishna Sekhar, Russ Taylor

Abstract:

We present the first results of the H i intensity mapping power spectrum analysis with the MeerKAT International GigaHertz Tiered Extragalactic Exploration (MIGHTEE) survey. We use data covering 4 square degrees in the COSMOS field using a frequency range of 962.5–1008.42 MHz, equivalent to H i emission in . The data consist of 15 pointings with a total of 94.2 h on-source. We verify the suitability of the MIGHTEE data for H i intensity mapping by testing for residual systematics across frequency, baselines, and pointings. We also vary the window used for H i signal measurements and find no significant improvement using stringent Fourier mode cuts. We compute the H i power spectrum at scales in autocorrelation as well as cross-correlation between observational scans using power spectrum domain averaging for pointings. We report consistent upper limits of 29.8 mK Mpc from the 2 cross-correlation measurements and 25.82 mK Mpc from autocorrelation at 2 Mpc.The low signal-to-noise ratio in this data potentially limits our ability to identify residual systematics, which will be addressed in the future by incorporating more data in the analysis.
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MIGHTEE-HI: The direct detection of neutral hydrogen in galaxies at $z>0.25$

(2025)

Authors:

Matt J Jarvis, Madalina N Tudorache, I Heywood, Anastasia A Ponomareva, M Baes, Natasha Maddox, Kristine Spekkens, Andreea Varasteanu, CL Hale, Mario G Santos, RG Varadaraj, Elizabeth AK Adams, Alessandro Bianchetti, Barbara Catinella, Jacinta Delhaize, M Maksymowicz-Maciata, Pavel E Mancera Piña, Hengxing Pan, Amélie Saintonge, Gauri Sharma, O Ivy Wong
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The ATLAS Virtual Research Assistant

(2025)

Authors:

HF Stevance, KW Smith, SJ Smartt, SJ Roberts, N Erasmus, DR Young, A Clocchiatti
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