Prépublication
· 2026 arXiv
EN
Weak-lensing magnification complements cosmic shear through its effects on galaxy fluxes, sizes, and number counts. We derive the optimal magnification statistics from galaxy properties and show that the optimal measurement can be decomposed into an optimal me...
Kun Xu, Ravi K. Sheth
#astro-ph.CO
Prépublication
· 2026 arXiv
EN
We predict the mass and semi-major axis of a currently unseen but hypothesised planet in the WISPIT 2 system based on the location of the ring observed by ALMA at 144.4 au. Using findings from previous hydrodynamical models, we predict that a ~0.2-1 $M_{Jup}$...
Amena Faruqi, Farzana Meru et al.
#astro-ph.EP
Prépublication
· 2026 arXiv
EN
Particle production from bubble collisions during First-Order Phase Transitions (FOPTs) has been studied as an efficient mechanism for baryogenesis and dark matter production, but existing semi-analytical treatments assume runaway bubbles with wall velocity $v...
Fayez Abu-Ajamieh, Amine Ahriche et al.
#hep-ph
Prépublication
· 2026 arXiv
EN
The Pandora spacecraft is a smallsat selected in NASA's inaugural class of Pioneers missions. The aim of the Pandora mission is to disentangle stellar activity signals from exoplanet atmospheric transmission spectroscopy measurements. Pandora accomplishes this...
Emily A. Gilbert, Elisa V. Quintana et al.
#astro-ph.IM
Prépublication
· 2026 arXiv
EN
Gravitational waves provide one of the most powerful observational probes for discriminating among inflationary models. In particular, it has recently become clear that the high-frequency gravitational-wave spectrum encodes a wealth of information about the pr...
Naoya Kitajima, Kamil Mudrunka et al.
#hep-ph
Prépublication
· 2026 arXiv
EN
Tomographic weak gravitational lensing probes cosmic structure growth and geometry, making it a powerful probe of dynamical dark energy. We forecast information beyond the lensing power spectrum from non-Gaussian statistics of tomographic galaxy and CMB lensin...
Shu-Fan Chen, J. Colin Hill et al.
#astro-ph.CO
Prépublication
· 2026 arXiv
EN
Titan's equatorial superrotation is associated with climatological retrograde (westward) near-surface winds at low latitudes, as consistently simulated by Titan general circulation models. However, the Huygens probe measured prograde (eastward) near-surface wi...
Sooman Han, Scot Rafkin et al.
#astro-ph.EP
Prépublication
· 2026 arXiv
EN
Bright standard sirens from the Einstein Telescope (ET) provide an independent probe of cosmic expansion. In this article, we test whether future ET observations can constrain a dynamical dark-energy scenario inspired by DESI DR2. Using the best-fitting 29-bin...
Yuanmin Mao, Wen Zhao
#astro-ph.CO
Prépublication
· 2026 arXiv
EN
Primordial tensor non-Gaussianity can probe massive particles present during inflation. We investigate this possibility in an effective field theory where the massless graviton mixes with the helicity-two mode of an additional massive spin-two field $σ_{ij}$ w...
Sukannya Bhattacharya, Matteo Fasiello et al.
#astro-ph.CO
Prépublication
· 2026 arXiv
EN
Contact binaries, appearing as two objects stuck together, are prevalent throughout the Solar System, making up between 30- 50% of asteroids and comets. Despite this, detailed shape models of contact binaries are hard to obtain remotely, requiring rare occulta...
Richard E. Cannon, Agata Rożek et al.
#astro-ph.EP
Prépublication
· 2026 arXiv
EN
The recent measurement of baryon acoustic oscillations by the Dark Energy Spectroscopic Instrument reveals a mild tension with observations of the cosmic microwave background (CMB) within the standard $Λ$CDM cosmological model. Another interesting hint beyond...
Salvatore Samuele Sirletti, Toshiya Namikawa et al.
#astro-ph.CO
Prépublication
· 2026 arXiv
EN
We report the discovery and characterization of a planetary system in the microlensing event OGLE-2013-BLG-1125/MOA-2013-BLG-584. We analyze photometric data from OGLE and MOA surveys, as well as LCO, $μ$FUN, and Mindstep follow-up telescopes to model the micr...
E. Bachelet, M. Hundertmark et al.
#astro-ph.EP