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19982026
most citedFirst Sagittarius A* Event Horizon Telescope Results. I. The Shadow of the Supermassive Black Hole in the Center of the Milky Way

1.9k citations

Showing 2025Show all

37 papers · 1 filter

astro-ph.GA2025

Dynamically close galaxy pairs from the unWISE survey: Testing the merger-AGN-star formation connection

Josephine Chishala, Roberto De Propris, Mirjana Pović

Galaxy mergers are expected to have a profound influence on the star formation histories of galaxies. It is generally expected that mergers are the main drivers of galaxy mass grow…

astro-ph.IM2025

Sub-millimeter wavelength protostellar accretion rate monitoring with AtLAST

Thomas Stanke, Verena Wolf, Bringfried Stecklum +5

How a star forms is a fundamental question in astrophysics. In the earliest stages of protostellar evolution high extinction prevents a direct study of the accretion processes and…

astro-ph.GA2025★ 2 cited

Looking into the faintEst WIth MUSE (LEWIS): on the nature of ultra-diffuse galaxies in the Hydra I cluster. V. Integrated stellar population properties

Goran Doll, Chiara Buttitta, Enrichetta Iodice +19

Context: This paper presents new results from the ESO Large Programme Looking into the faintEst WIth MUSE (LEWIS). The sample consists of low-surface brightness (LSB) and ultra-dif…

astro-ph.SR2025★ 1 cited

Giant outbursts of clumpy material preceding Type II supernova 2024qiw

T. Nagao, H. Kuncarayakti, K. Maeda +6

Observations of core-collapse supernovae suggest that some massive stars undergo intense mass loss shortly before explosion, but the underlying mechanisms remain unknown. Here we r…

astro-ph.HE2025★ 4 cited

Probing jet base emission of M87* with the 2021 Event Horizon Telescope observations

Saurabh, Hendrik Müller, Sebastiano D. von Fellenberg +282

We investigate the presence and spatial characteristics of the jet base emission in M87* at 230 GHz, enabled by the enhanced uv coverage in the 2021 Event Horizon Telescope (EHT) o…

astro-ph.SR2025★ 2 cited

SN 2022ngb: A faint, slowly evolving Type IIb supernova with a low-mass envelope

J. -W. Zhao, S. Benetti, Y. -Z. Cai +35

An extensive photometric and spectroscopic follow-up campaign of the Type IIb SN 2022ngb is presented in the article. Through detailed modeling of this dataset, we aim to constrain…

astro-ph.GA2025

Galaxy and Mass Assembly (GAMA): The Properties of Quasar Host Galaxies: Star Formation Histories and Stellar Populations

Maria B. Stone, Roberto De Propris, Clare Wethers +5

We investigated the star formation history and stellar populations of a sample of 205 Type I quasar host galaxies (0.1z0.35) and compared with normal (non-active) galaxies of…

astro-ph.EP2025★ 3 cited

Rapid-response characterization of near-Earth asteroid 2024 YR4 during a Torino Scale 3 alert

Maxime Devogèle, Olivier R. Hainaut, Marco Micheli +32

On 27 December 2024, near-Earth object (NEO) 2024 YR was discovered by the ATLAS survey and identified as a virtual impactor. A few weeks later, it eventually reached level 3 o…

astro-ph.GA2025★ 2 cited

NGC 6860, Mrk 915, and MCG -01-24-012. II. Inflowing and outflowing cold molecular gas and the connection with ionized gas in Seyfert galaxies

Bruno Dall'Agnol de Oliveira, Thaisa Storchi-Bergmann, Neil Nagar +5

We present a study of the cold molecular gas kinematics in the inner ~ 4-7 kpc (projected sizes) of three nearby Seyfert galaxies, with AGN luminosities of ~ 10 erg/s, using…

astro-ph.SR2025★ 3 cited

Massive stars exploding in a He-rich circumstellar medium XII. SN 2024acyl: A fast, linearly declining Type Ibn supernova with early flash-ionisation features

Y. -Z. Cai, A. Pastorello, K. Maeda +63

We present a photometric and spectroscopic analysis of the Type Ibn supernova (SN) 2024acyl. It rises to an absolute magnitude peak of about -17.58 mag in 10.6 days, and displays a…

astro-ph.SR2025★ 3 cited

SN2017ckj: A linearly declining Type IIb supernova with a relatively massive hydrogen envelope

L. -H. Li, S. Benetti, Y. -Z. Cai +26

We present optical observations of the Type IIb supernova (SN) 2017ckj, covering approximately 180 days after the explosion. Its early-time multi-band light curves display no clear…

astro-ph.HE2025

Association of the IceCube neutrinos with CAZ blazar light curves

Pouya M. Kouch, Talvikki Hovatta, Elina Lindfors +3

The IceCube Neutrino Observatory has detected several hundred high-energy neutrinos from cosmic sources. Despite numerous studies searching for their origin, it is still not known…

astro-ph.HE2025★ 1 cited

CAZ catalog and optical light curves of 7918 blazar-selected active galactic nuclei

Pouya M. Kouch, Elina Lindfors, Talvikki Hovatta +10

Active galactic nuclei (AGN) are some of the brightest and most variable objects in the Universe. Those with relativistic jets observed at small viewing angles are blazars. Due to…

astro-ph.HE2025

Pinpointing the location of the gamma-ray emitting region in the FSRQ 4C+01.28

F. Rösch, M. Kadler, E. Ros +5

The FSRQ 4C+01.28 is a bright and highly variable radio and -ray emitter. We aim to pinpoint the location of the -ray emitting region within its jet in order to derive strong…

astro-ph.HE2025★ 20 cited

Horizon-scale variability of M87* from 2017--2021 EHT observations

The Event Horizon Telescope Collaboration

We report three epochs of polarized images of M87* at 230\,GHz using data from the Event Horizon Telescope (EHT) taken in 2017, 2018, and 2021. The baseline coverage of the 2021 ob…

astro-ph.GA2025★ 4 cited

Looking into the faintEst WIth MUSE (LEWIS): Exploring the nature of ultra-diffuse galaxies in the Hydra-I cluster IV. A study of the Globular Cluster population in four UDGs

Marco Mirabile, Michele Cantiello, Marina Rejkuba +20

As old stellar systems, globular clusters (GCs) are key fossil tracers of galaxy formation and interaction histories. This paper is part of the LEWIS project, an integral-field spe…

astro-ph.SR2025★ 5 cited

The nebular phase of SN 2024ggi: a low-mass progenitor with no signs of interaction

L. Ferrari, G. Folatelli, K. Ertini +14

Context: SN 2024ggi is a Type II supernova (SN) discovered in the nearby galaxy NGC 3621 (D Mpc) on 2024 April 03.21 UT. Its proximity enabled a detailed investi…

astro-ph.HE2025

SN 2024hpj: A perspective on SN 2009ip-like events

I. Salmaso, A. Pastorello, E. Borsato +25

Supernovae (SNe) IIn are terminal explosions of massive stars that are surrounded by a dense circumstellar medium (CSM). Among SNe IIn, a notable subset is the SN 2009ip-like, whic…

cs.DL2025

Rxiv-Maker: an automated template engine for streamlined scientific publications

Bruno M. Saraiva, Rita Carlota, António D. Brito +3

The rapid growth of preprint servers has accelerated scientific dissemination but has also shifted the technical burden of manuscript preparation to authors. This challenge is part…

astro-ph.HE2025★ 1 cited

Optical spectroscopy of blazars for the Cherenkov Telescope Array Observatory- IV

B. Rajput, P. Goldoni, W. Max-Moerbeck +17

Blazars, including BL Lacs and FSRQs, are the most luminous extragalactic γ-ray sources. They account for about 56% of the sources listed in the recent Fermi-LAT catalog (4FGL-DR4)…

astro-ph.CO2025★ 2 cited

Evolution of Cluster Alignments as Evidence of Large-scale Structure Formation in the Universe

Michael J. West, Roberto De Propris, Maret Einasto +2

The universe's large-scale structure forms a vast, interconnected network of filaments, sheets, and voids known as the cosmic web. For decades, astronomers have observed that the o…

astro-ph.HE2025★ 3 cited

Infrared observations reveal the reprocessing envelope in the tidal disruption event AT 2019azh

Thomas M. Reynolds, Lars Thomsen, Seppo Mattila +14

Tidal disruption events (TDEs) are expected to release much of their energy in the far-ultraviolet (UV), which we do not observe directly. However, infrared (IR) observations can o…

astro-ph.HE2025★ 9 cited

Determining the origin of the X-ray emission in blazars through multiwavelength polarization

Ioannis Liodakis, Haocheng Zhang, Stella Boula +48

The origin of the high-energy emission in astrophysical jets from black holes is a highly debated issue. This is particularly true for jets from supermassive black holes that are a…

cs.LG2025★ 3 cited

Blockchain-Enabled Privacy-Preserving Second-Order Federated Edge Learning in Personalized Healthcare

Anum Nawaz, Muhammad Irfan, Xianjia Yu +4

Federated learning (FL) is increasingly recognised for addressing security and privacy concerns in traditional cloud-centric machine learning (ML), particularly within personalised…