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Discovery of a > 13 Mpc long X-ray filament between two galaxy clusters beyond three times their virial radii
Pacaud, F.; Reiprich, T. H.; Dolag, K. +5 more
Context. A significant fraction of the missing baryons in the local Universe is expected to reside in large-scale filaments that may be observable in soft X-ray emission. Until now, however, very few candidate emission filaments have been found in individual systems, and none beyond three times the virial radius of the clusters at the nodes of the…
JASMINE: Near-infrared astrometry and time-series photometry science
Ouchi, Masami; Isobe, Naoki; Notsu, Yuta +86 more
The Japan Astrometry Satellite Mission for INfrared Exploration (JASMINE) is a planned M-class science space mission by the Institute of Space and Astronautical Science, the Japan Aerospace Exploration Agency. JASMINE has two main science goals. One is Galactic archaeology with a Galactic Center survey, which aims to reveal the Milky Way's central…
Project Hephaistos - II. Dyson sphere candidates from Gaia DR3, 2MASS, and WISE
Wright, Jason T.; Zackrisson, Erik; Korn, Andreas J. +5 more
The search for extraterrestrial intelligence is currently being pursued using multiple techniques and in different wavelength bands. Dyson spheres, megastructures that could be constructed by advanced civilizations to harness the radiation energy of their host stars, represent a potential technosignature, that in principle may be hiding in public …
The structural properties of multiple populations in globular clusters: The instructive case of NGC 3201
Vesperini, Enrico; Cadelano, Mario; Dalessandro, Emanuele
All multiple population (MP) formation models in globular clusters (GCs) predict that second population (SP) stars form more centrally concentrated than the first population (FP). As dynamical evolution proceeds, spatial differences are progressively erased and only dynamically young clusters are expected to retain a partial memory of the initial …
X-Ray Bright Active Galactic Nuclei in Local Dwarf Galaxies: Insights from eROSITA
Sacchi, Andrea; Bogdán, Ákos; Chadayammuri, Urmila +1 more
Although supermassive black holes (SMBHs) reside in the heart of virtually every massive galaxy, it remains debated whether dwarf galaxies commonly host SMBHs. Because low-mass galaxies may retain memory of the assembly history of their black holes (BHs), probing the BH occupation fraction of local dwarf galaxies might offer insights into the grow…
Riding the dark matter wave: Novel limits on general dark photons from LISA Pathfinder
Jaeckel, Joerg; Frerick, Jonas; Kahlhoefer, Felix +1 more
We note the possibility to perform a parametrically improved search for gauged baryon (B) and baryon minus lepton (
TOI-1685 b Is a Hot Rocky Super-Earth: Updates to the Stellar and Planet Parameters of a Popular JWST Cycle 2 Target
Gaidos, Eric; Kasper, David; Luque, Rafael +12 more
We present an updated characterization of the TOI-1685 planetary system, which consists of a P b = 0.69 day ultra-short-period super-Earth planet orbiting a nearby (d = 37.6 pc) M2.5V star (TIC 28900646, 2MASS J04342248+4302148). This planet was previously featured in two contemporaneous discovery papers, but the best-fit planet mass, r…
The MEGARA view of outflows in LINERs
Hermosa Muñoz, L.; Márquez, I.; Masegosa, J. +12 more
Context. Feedback processes, in particular those driven by outflows, are believed to play a major role in galaxy evolution. Outflows are believed to be ubiquitous in all active galactic nuclei (AGNs), although their presence in low luminosity AGNs, in particular for Low-Ionisation Nuclear Emission line Regions (LINERs), has only started to be expl…
Eclipse-timing study of new hierarchical triple star candidates in the northern continuous viewing zone of TESS
Mitnyan, T.; Pál, A.; Borkovits, T. +4 more
Aims: We compiled a list of more than 3500 eclipsing binaries located in and near the northern continuous viewing zone (NCVZ) of the TESS space telescope that have sufficient TESS photometry to search for additional hidden components in these systems. In addition to discovering their hierarchical nature, we also determined their orbital param…
X-Ray Diagnostics of Cassiopeia A's "Green Monster": Evidence for Dense Shocked Circumstellar Plasma
Temim, Tea; De Looze, Ilse; Slane, Patrick +4 more
The recent survey of the core-collapse supernova remnant Cassiopeia A (Cas A) with the MIRI instrument on board the James Webb Space Telescope (JWST) revealed a large structure in the interior region, referred to as the "Green Monster." Although its location suggests that it is an ejecta structure, the infrared properties of the "Green Monster" hi…