Tootfinder

Average solar active region: I. Intensities, velocities, and the photospheric magnetic field
M. \v{S}vanda (Astronomical Institute of the Czech Academy of Sciences, Astronomical Institute, Faculty of Mathematics and Physics, Charles University), J. Jur\v{c}\'ak (Astronomical Institute of the Czech Academy of Sciences), M. Schmassmann (Institut f\"ur Sonnenphysik)

Average solar active region: I. Intensities, velocities, and the photospheric magnetic field
Context: Solar active regions (ARs) are key manifestations of the Sun's magnetic activity, displaying diverse spatial and temporal characteristics. Their formation and evolution play a crucial role in understanding the solar dynamo and space weather. While individual ARs exhibit significant variability, ensemble averaging offers a method to extract their typical properties and evolution. Aims: This study aims to construct an average bipolar AR using ensemble averaging of observational data. By …

The Potential Danger to Satellites due to Ejecta from a 2032 Lunar Impact by Asteroid 2024 YR4
Paul Wiegert, Peter Brown, Jack Lopes, Martin Connors
https://arxiv.org/abs/2506.11217

The Potential Danger to Satellites due to Ejecta from a 2032 Lunar Impact by Asteroid 2024 YR4
On 2032 December 22 the 60 m diameter asteroid 2024 YR4 has a 4% chance of impacting the Moon. Such an impact would release 6.5 MT TNT equivalent energy and produce a ~1 km diameter crater. We estimate that up to 10^8 kg of lunar material could be liberated in such an impact by exceeding lunar escape speed. Depending on the actual impact location on the Moon as much as 10% of this material may accrete to the Earth on timescales of a few days. The lunar ejecta-associated particle fluence at 0.1 …

Digital Transformation of Urban Planning in Australia: Influencing Factors and Key Challenges
Soheil Sabri, Sherah Kurnia
https://arxiv.org/abs/2506.13333 …

Digital Transformation of Urban Planning in Australia: Influencing Factors and Key Challenges
Over the past two decades, several governments in developing and developed countries have started their journey toward digital transformation. However, the pace and maturity of digital technologies and strategies are different between public services. Current literature indicates that research on the digital transformation of urban planning is still developing. Therefore, the aim of this study is to understand the influencing factors and key challenges for the digital transformation of urban pl…

X-ray investigation of the remarkable galaxy group Nest200047
Anwesh Majumder, A. Simionescu, T. Pl\v{s}ek, M. Brienza, E. Churazov, I. Khabibullin, F. Gastaldello, A. Botteon, H. R\"ottgering, M. Br\"uggen, N. Lyskova, K. Rajpurohit, R. A. Sunyaev, M. W. Wise
https://arxiv.org/abs/2506.11312

X-ray investigation of the remarkable galaxy group Nest200047
Galaxy groups are more susceptible to feedback from the central active galactic nuclei (AGN) due to their lower gravitational binding energy compared to clusters. This makes them ideal laboratories to study feedback effects on the overall energy and baryonic mass budget. We study the LOFAR-detected galaxy group Nest200047, where there is clear evidence of multiple generations of radio lobes from the AGN. Using 140 ks Chandra and 25 ks XMM-Newton data, we investigate thermodynamic properties of …

Event-by-event reconstruction of air-shower events with IceCube using a two component lateral distribution function
Mark Weyrauch (for the IceCube Collaboration)
https://arxiv.org/abs/2506.11507

Event-by-event reconstruction of air-shower events with IceCube using a two component lateral distribution function
The IceCube Neutrino Observatory, located at the geographic South Pole, comprises a surface component, IceTop, and an optical in-ice array. This unique com\-bi\-na\-tion allows for coincident measurements of low-energy ($\sim \rm{GeV}$) and high-energy ($\gtrsim 400\,\rm{GeV}$) muons produced in cosmic-ray air showers. The ratio of the low- and high-energy muon yields can constitute a useful tool not only for composition analyses but also for testing different hadronic interaction models. Howev…

Circum-nuclear eccentric gas flow in the Galactic Center revealed by ALMA CMZ Exploration Survey (ACES)
Yoshiaki Sofue, Tomoharu Oka, Steven N. Longmore, Daniel Walker, Adam Ginsburg, Jonathan D. Henshaw, John Bally, Ashley T. Barnes, Cara Battersby, Laura Colzi, Paul Ho, Izaskun Jimenez-Serra, J. M. Diederik Kruijssen, Elizabeth Mills, Maya A. Petkova, Mattia C. Sormani, Jennifer Wallace, Jairo Armijos-Abenda\~no, Katarzyna M. Dutkowska, Rei Enokiya, Pablo Garc\'ia, Savannah Gramz…

Circum-nuclear eccentric gas flow in the Galactic Center revealed by ALMA CMZ Exploration Survey (ACES)
We analyze the CS (J=2-1) line cube from the internal data release obtained by the large-scale program "ALMA CMZ Exploration Survey (ACES)" to investigate the kinematic structure of the innermost $\sim 10$ pc region of the Galaxy, which contains the high-velocity compact cloud (HVCC) at $(l,b,v_{\rm lsr})\sim(+0^\circ.02,-0^\circ.02, 100 {\rm km~s}^{-1})$ (hereafter G0.02). The longitude-velocity diagram (LVD) of the cloud draws an elliptical structure, which is interpreted as an orbital trajec…

FAUST XXVII: The circumbinary disk and the outflow of the L 1551 IRS 5 binary system
Aurora Dur\'an, Laurent Loinard, Pedro R. Rivera-Ortiz, Geovanni Cort\'es-Rangel, Eleonora Bianchi, Paola Caselli, Cecilia Ceccarelli, Claire J. Chandler, Claudio Codella, Nicol\'as Cuello, Marta De Simone, Tomoyuki Hanawa, Doug Johnstone, Fran\c{c}ois Menard, Maria Jos\'e Maureira, Anna Miotello, Linda Podio, Takeshi Sakai, Giovanni Sabatini, Leonardo Testi, Charlotte Vastel, Ziwei Zha…

FAUST XXVII: The circumbinary disk and the outflow of the L 1551 IRS 5 binary system
Using continuum and $\text{C}^{18}\text{O}\:(2-1)$ line data obtained from the large ALMA program FAUST, we studied the structure of the protostellar binary system L1551 IRS5 at scales between 30 and 3,000 au to constrain its properties, from the circumstellar and circumbinary disks up to the envelope and outflow scales, which exhibits complex and entangled structures at the scales of its inner and outer envelopes, presumably caused by the influence of the central binary. Assuming a dust-to-gas…

Inner disc and circumplanetary material in the PDS 70 system
Daniele Fasano, Myriam Benisty, Pietro Curone, Stefano Facchini, Francesco Zagaria, Tomohiro C. Yoshida, Kiyoaki Doi, Anibal Sierra, Sean Andrews, Jaehan Bae, Andrea Isella, Nicol\'as T. Kurtovic, Laura M. P\'erez, Paola Pinilla, Luna Rampinelli, Richard Teague
https://

Inner disc and circumplanetary material in the PDS 70 system
The two giant protoplanets directly imaged in the dust-depleted cavity of PDS 70 offer a unique opportunity to study ongoing planet formation. Both planets have been detected in infrared thermal emission and in H$α$, indicating active accretion. We calibrate and analyse archival ALMA Band 6 and 7 observations of PDS 70 from 2019, 2021, and 2023 to search for circumplanetary material and assess its motion. Using 2D visibility modelling of the high-resolution (~0.11"x0.08" in Band 6; ~0.05"x0.05…

Using gravitational waves and multi-messenger Astronomy to reverse-engineer the properties of galactic nuclei
K. E. Saavik Ford, Barry McKernan
https://arxiv.org/abs/2506.08801

Using gravitational waves and multi-messenger Astronomy to reverse-engineer the properties of galactic nuclei
Active galactic nuclei (AGN) are powered by accretion disks onto supermassive black holes in the the centers of galaxies. AGN are believed to play important roles in the evolution of both supermassive black holes and their host galaxies over cosmic time. AGN and the nuclear star clusters (NSCs) that interact with them remain unresolved with present and planned telescopes. As a result, the properties of AGN and NSCs are highly uncertain. Here we review how binary black hole (BBH) mergers can occ…

Asteroseismology of the G8 subgiant beta Aquilae with SONG-Tenerife, SONG-Australia and TESS
Hans Kjeldsen, Timothy R. Bedding, Yaguang Li, Frank Grundahl, Mads Fredslund Andersen, Duncan J. Wright, Jack Soutter, Robert Wittenmyer, Claudia Reyes, Dennis Stello, Courtney Crawford, Yixiao Zhou, Mathieu Clerte, Pere L. Palle, Sergio Simon-Diaz, Joergen Christensen-Dalsgaard, Rasmus Handberg, Hasse Hansen, Paul Heeren, Jens Jessen-Hansen, Mikkel Lund, Mia S. Lundkvist, Karsten Brogaard, Re…

Asteroseismology of the G8 subgiant beta Aquilae with SONG-Tenerife, SONG-Australia and TESS
We present radial velocities of the G8 subgiant star beta Aql obtained in 2022 and 2023 using SONG-Tenerife and SONG-Australia. We also analysed a sector of TESS photometry that overlapped with the 2022 SONG data. We processed the time series to assign weights and to remove bad data points. The power spectrum clearly shows solar-like oscillations centred at 430 muHz. The TESS data show the oscillations at lower signal-to-noise because photometric measurements are much more affected by the granu…