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astro-ph.HE2024★ 3 cited

Jet formation studies in AGN: a search for new targets

B. Boccardi, L. Ricci, E. Madika +6

In recent years, the jet formation region in active galaxies has been imaged through mm-VLBI in few ideal targets, first and foremost M87. An important leap forward for understandi…

astro-ph.CO2024★ 8 cited

How the cool-core population transitions from galaxy groups to massive clusters: A comparison of the largest Magneticum simulation with eROSITA, XMM-Newton, Chandra and LOFAR observations

Justo Antonio Gonzalez Villalba, Klaus Dolag, Veronica Biffi

Our aim is to understand how the interplay between AGN feedback and merge processes can effectively turn cool-core galaxy clusters into hot-core clusters in the modern universe. Ad…

astro-ph.GA2024★ 5 cited

Behind the dust veil: A panchromatic view of an optically dark galaxy at z=4.82

Nikolaj B. Sillassen, Shuowen Jin, Georgios E. Magdis +30

Optically dark dusty star-forming galaxies (DSFGs) play an essential role in massive galaxy formation at early cosmic time, however their nature remains elusive. Here we present a…

astro-ph.GA2024★ 2 cited

Modeling Mg II resonance doublet spectra from galaxy haloes at z 1

Seok-Jun Chang, Rajeshwari Dutta, Max Gronke +3

We investigate the properties of cold gas at around star-forming galaxies at using Mg II spectra through radiative transfer modeling. We utilize a comprehen…

astro-ph.GA2024★ 6 cited

Influence of mergers on LyC escape of high redshift galaxies

Ivan Kostyuk, Benedetta Ciardi

Aims: We investigate the impact of galaxy mergers on the Lyman Continuum (LyC) radiation escape, fesc, from high-redshift galaxies. Methods: We post-process ~ 6e5 galaxies (redshif…

astro-ph.CO2024

Observations of the galaxy cluster CL 0217+70 and its surrounding region at 1.4 GHz with the Sardinia Radio Telescope

P. Marchegiani, V. Vacca, F. Govoni +3

We present the results of observations performed with the Sardinia Radio Telescope (SRT) at 1.3-1.8 GHz of the galaxy cluster CL 0217+70 and a region aroun…

astro-ph.GA2024★ 6 cited

A nuclear spiral in a dusty star-forming galaxy at

H. R. Stacey, M. Kaasinen, C. M. O'Riordan +3

The nuclear structure of dusty star-forming galaxies is largely unexplored but harbours critical information about their structural evolution. Here, we present long-baseline Atacam…

astro-ph.GA2024★ 10 cited

Average X-ray properties of galaxy groups. From Milky Way-like halos to massive clusters

P. Popesso, I. Marini, K. Dolag +20

This study examines the average X-ray properties of massive halos at z< 0.2, covering the largest halo mass range to date, from Milky Way-like halos to massive clusters. The analys…

astro-ph.GA2024★ 11 cited

The hot gas mass fraction in halos. From Milky Way-like groups to massive clusters

P. Popesso, A. Biviano, I. Marini +21

By using eROSITA data in the eFEDS area, we provide a measure of the hot gas fraction vs. halo mass relation over the largest halo mass range, from Milky Way-sized halos to massive…

astro-ph.GA2024★ 7 cited

The perils of stacking optically selected groups in eROSITA data. The Magneticum perspective

P. Popesso, I. Marini, K. Dolag +23

Hydrodynamical simulation predictions are often compared with observational data without fully accounting for systematics and biases specific to observational techniques. Using the…

astro-ph.IM2024★ 2 cited

Extracting the Epoch of Reionization Signal with 3D U-Net Neural Networks Using Data-driven Systematic Effect Model

Li-Yang Gao, Léon V. E. Koopmans, Florent G. Mertens +11

Neutral hydrogen (HI) serves as a crucial probe for the Cosmic Dawn and the Epoch of Reionization (EoR). Actual observations of the 21-cm signal often encounter challenges such as…

astro-ph.GA2024★ 3 cited

Hidden in Pixels. I. Discovery of dual "little red dots" indicates excess clustering on kilo-parsec scales

Takumi S. Tanaka, John D. Silverman, Kazuhiro Shimasaku +56

``Little Red Dots'' (LRDs) are an abundant high-redshift population newly discovered by the James Webb Space Telescope (JWST) and considered to be an early growth phase of supermas…

astro-ph.GA2024★ 8 cited

The role of accreted and in situ populations in shaping the stellar halos of low-mass galaxies

Elisa A. Tau, Antonela Monachesi, Facundo A. Gomez +7

The stellar halos of dwarf galaxies are becoming an object of interest in the extragalactic community due to their detection in some recent observations. Additionally, new cosmolog…

astro-ph.CO2024★ 2 cited

The relation of galaxies and dark matter haloes to the filamentary cosmic web

Navdha, Philipp Busch, Simon D. M. White

We use the Millennium Simulation to study the relation of galaxies and dark matter haloes to the cosmic web. We define the web as the unique, fully connected, percolating object wi…

astro-ph.HE2024

Nucleosynthesis Conditions in Outflows of White Dwarfs Collapsing to Neutron Stars

Eirini Batziou, Robert Glas, H. -Thomas Janka +3

Accretion-induced collapse (AIC) or merger-induced collapse (MIC) of white dwarfs (WDs) in binary systems is an interesting path to neutron star (NS) and magnetar formation, altern…

astro-ph.HE2024★ 5 cited

Gravitational-Wave Signatures of Nonstandard Neutrino Properties in Collapsing Stellar Cores

Jakob Ehring, Sajad Abbar, H. -Thomas Janka +3

We present a novel multi-messenger approach for probing nonstandard neutrino properties through the detection of gravitational waves (GWs) from collapsing stellar cores and associa…

astro-ph.GA2024★ 14 cited

Detecting clusters and groups of galaxies populating the local Universe in large optical spectroscopic surveys

I. Marini, P. Popesso, K. Dolag +13

Wide-field cosmological surveys provide hundreds of thousands of spectroscopically confirmed galaxy groups and clusters, valuable for tracing baryonic matter distribution. However,…

astro-ph.CO2024★ 4 cited

Cosmography from accurate mass modeling of the lens group SDSS J0100+1818: five sources at three different redshifts

A. Bolamperti, C. Grillo, G. B. Caminha +6

Systems where multiple sources at different redshifts are strongly lensed by the same deflector allow one to directly investigate the evolution of the angular diameter distances wi…

astro-ph.SR2024★ 4 cited

The robustness of inferred envelope and core rotation rates of red-giant stars from asteroseismology

F. Ahlborn, E. P. Bellinger, S. Hekker +2

Rotation is an important, yet poorly-modelled phenomenon of stellar structure and evolution. Accurate estimates of internal rotation rates are therefore valuable for constraining s…

astro-ph.CO2024★ 12 cited

J1721+8842: The first Einstein zig-zag lens

F. Dux, M. Millon, C. Lemon +16

We report the discovery of the first example of an Einstein zig-zag lens, an extremely rare lensing configuration. In this system, J1721+8842, six images of the same background qua…

astro-ph.SR2024★ 7 cited

Variability in hot sub-luminous stars and binaries: Machine-learning analysis of Gaia DR3 multi-epoch photometry

P. Ranaivomanana, M. Uzundag, C. Johnston +3

Hot sub-luminous stars represent a population of stripped and evolved red giants that is located on the extreme horizontal branch. Since they exhibit a wide range of variability du…

astro-ph.GA2024★ 4 cited

Misty, patchy, and turbulent: constraining the cool circumgalactic medium with mCC

Mukesh Singh Bisht, Prateek Sharma, Alankar Dutta +1

The circumgalactic medium (CGM) is the largest baryon reservoir around galaxies, but its extent, mass, and temperature distribution remain uncertain. We propose that cool gas ($\si…

astro-ph.HE2024★ 4 cited

Zooming-in on cluster radio relics -- I. How density fluctuations explain the Mach number discrepancy, microgauss magnetic fields, and spectral index variations

Joseph Whittingham, Christoph Pfrommer, Maria Werhahn +2

It is generally accepted that radio relics are the result of synchrotron emission from shock-accelerated electrons. Current models, however, are still unable to explain several asp…

astro-ph.SR2024★ 5 cited

Evolution of binaries containing a hot subdwarf and a white dwarf to double white dwarfs, and double detonation supernovae with hypervelocity runaway stars

Abinaya Swaruba Rajamuthukumar, Evan B. Bauer, Stephen Justham +3

Compact binaries containing hot subdwarfs and white dwarfs have the potential to evolve into a variety of explosive transients. These systems could also explain hypervelocity runaw…