Tootfinder

Spatially and Dynamically Extended Molecular Gas in Stephan's Quintet Revealed by ALMA CO(1-0) Total Power Mapping
Fumiya Maeda, Shinya Komugi, Kazuyuki Muraoka, Misaki Yamamoto, Fumi Egusa, Kouji Ohta, Yoshihisa Asada, Asao Habe, Bunyo Hatsukade, Hiroyuki Kaneko, Masato Kobayashi, Kotaro Kohno, Ayu Konishi, Ren Matsusaka, Kana Morokuma-Matsui, Kouichiro Nakanishi, Tomoka Tosaki, Akiyoshi Tsujita

Spatially and Dynamically Extended Molecular Gas in Stephan's Quintet Revealed by ALMA CO(1-0) Total Power Mapping
We present ALMA Total Power CO(1-0) mapping of Stephan's Quintet (SQ), a prototypical compact galaxy group, with a uniform noise level at a spatial scale of ~25 kpc. These observations provide the first complete view of molecular gas across the whole system. Molecular gas is found to spread over a wide area (~120 x 80 kpc), mainly over the two main member galaxies (NGC7318B and 7319), but also in the shocked ridges between these galaxies, the tidal tail, and also in intergalactic regions north …

Conditioning halos on the tidal environment for fast and accurate HI power spectra during reionization
Gaurav Pundir, Aseem Paranjape, Tirthankar Roy Choudhury
https://arxiv.org/abs/2509.13690

Conditioning halos on the tidal environment for fast and accurate HI power spectra during reionization
Predicting the statistical properties of the neutral hydrogen (HI) density field during reionization is an important step in using upcoming 21 cm observations to constrain models of reionization. Semi-numerical models of reionization are often coupled with the collapse fraction field $f_{\text{coll}}(\mathbf{x})$, which determines the fraction of dark matter within halos. In this work, we improve upon earlier prescriptions that compute $f_{\text{coll}}$ based on the dark matter overdensity $δ(…

Analysis and Control of Acoustic Emissions from Marine Energy Converters
Jiaqin He, Max Malyi, Jonathan Shek
https://arxiv.org/abs/2509.08656 https://arxiv…

Analysis and Control of Acoustic Emissions from Marine Energy Converters
This study investigates the mitigation of acoustic emissions from tidal current converters (TCCs) through optimized control strategies to enhance power generation efficiency while minimizing environmental impacts on marine life. A MATLAB/Simulink-based model of a Tidal Current Conversion System (TCCS) was developed to simulate the effects of variable control parameters, including switching frequencies, maximum power point tracking (MPPT) coefficients, and the elimination of the gearbox, on unde…

Identifying tidal disruption events among radio transient galaxies
M. Kunert-Bajraszewska, D. Kozie{\l}-Wierzbowska, D. Stern, A. Krauze, N. Zafar, T. Connor, M. J. Graham
https://arxiv.org/abs/2510.01773

Identifying tidal disruption events among radio transient galaxies
We present the optical and infrared properties of a sample of 24 radio transient sources discovered in the Very Large Array Sky Survey (VLASS). Previous studies of their radio emission showed that these sources resemble young gigahertz-peaked spectrum (GPS) radio sources, but are less powerful and characterized by low-power jets. The bursts of radio activity in most cases are likely due to intrinsic changes in the accretion processes. However, for a few sources in this sample, we cannot rule ou…

Tidal adaptive softening and artificial fragmentation in cosmological simulations
Robert A. Mostoghiu Paun, Darren Croton, Chris Power, Alexander Knebe, Adam J. Ussing, Alan R. Duffy
https://arxiv.org/abs/2507.16930

Tidal adaptive softening and artificial fragmentation in cosmological simulations
Traditional N-body methods introduce localised perturbations in the gravitational forces governing their evolution. These perturbations lead to an artificial fragmentation in the filamentary network of the Large Scale Structure, often referred to as "beads-on-a-string." This issue is particularly apparent in cosmologies with a suppression of the matter power spectrum at small spatial scales, such as warm dark matter models, where the perturbations induced by the N-body discretisation dominate t…

Mass Determination of Supermassive Black Holes Governing Evolution of Radio Emitters
Kimitake Hayasaki, Ryo Yamazaki
https://arxiv.org/abs/2507.23161 https://

Mass Determination of Supermassive Black Holes Governing Evolution of Radio Emitters
Tidal disruption events (TDEs) involving supermassive black holes (SMBHs) often exhibit radio emission, yet its physical origin remains uncertain, especially in non-jetted cases. In this Letter, we formulate a general dynamical framework for a radio-emitting shell driven by disk winds and expanding through a power-law ambient medium under the influence of SMBH gravity. We derive and classify power-law-in-time solutions to the governing equations in the adiabatic regime. In particular, a univers…