Prépublication
· 2026 arXiv
EN
We present a technique using integral-field spectroscopy to kinematically isolate intracluster light (ICL) from the brightest cluster galaxy (BCG), enabling insights into their contrasting stellar populations and the inner dark matter halo profile. Applying th...
Callum Bellhouse, Steven Bamford et al.
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Prépublication
· 2026 arXiv
EN
Reverberation mapping of active galactic nuclei uses the time taken for variability to travel through the system as a measure of system size, with this size being used to inform estimates of the mass of the central black hole, a technique that has graduated to...
Hugh McDougall, Tamara M. Davis et al.
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Prépublication
· 2026 arXiv
EN
Supermassive black hole binaries (SMBHB) are expected at the center of galaxies as a result of galaxy mergers. The dynamics and evolution of SMBHBs shed light on the evolution and formation of galaxies, the gravitational wave background and the nature of gravi...
Hanxi Wang, Bence Kocsis et al.
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Prépublication
· 2026 arXiv
EN
How galaxies stop forming stars is a complex and central problem in astrophysics. Numerous physical mechanisms have been proposed, yet a simple, unified framework connecting these mechanisms remains lacking. Here, we derive a step-function quenching response f...
Zhicheng He, Enci Wang et al.
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Prépublication
· 2026 arXiv
EN
The probability of interstellar contact depends not only on the abundance of technological civilizations but also on their spatial connectivity. Treating civilizations as nodes linked whenever their separation is smaller than the distance a signal travels with...
Kohji Tsumura
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Prépublication
· 2026 arXiv
EN
It is commonly thought that fast radio bursts (FRBs) trace star formation, and that they are produced by magnetars. Both hypotheses imply that their sources are hosted primarily (but not exclusively) in galactic disks. Although there is evidence in that direct...
Lachlan Marnoch, Stuart D. Ryder et al.
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Prépublication
· 2026 arXiv
EN
We present a post-processing pipeline that predicts CO line luminosities, molecular hydrogen masses, and CO abundances for galaxies in the Feedback in Realistic Environments (FIRE-2) simulations, as a first step toward CO response functions for line intensity...
Doğa Tolgay, Norman W. Murray et al.
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Prépublication
· 2026 arXiv
EN
The finding that galaxies in the first 500Myr were much more numerous and/or brighter than expected is often cited as one of the main discoveries of the James Webb Space Telescope in its first four years of operation. This result is now solidly based on an imp...
A. Fontana, H. Atek et al.
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