Prépublication
· 2026 arXiv
EN
ALMA high-resolution surveys have so far focused mainly on large, bright protoplanetary disks, where substructures are routinely detected, leaving compact disks poorly characterized. Yet, the survival of millimeter emission in Class II sources implies that rad...
Pietro Curone, Gijs D. Mulders et al.
#astro-ph.EP
Prépublication
· 2026 arXiv
EN
In Inflation without an Inflaton (IWI), a de Sitter (dS) background drives inflation, and the graviton bilinear generates scalar perturbations at second order, with no inflaton or additional fundamental scalar field. We investigate how this scenario can accoun...
Raul Jimenez, Daniele Bertacca et al.
#astro-ph.CO
Prépublication
· 2026 arXiv
EN
We investigate the global dynamics and cosmological viability of non-singular solutions in an anisotropic Bianchi type I universe featuring an interacting vacuum energy component $V$ and a perfect fluid $ρ$, extending previous work based on a Robertson-Walker...
Marco Bruni, Rodrigo Maier et al.
#astro-ph.CO
Prépublication
· 2026 arXiv
EN
It is conventionally believed that the Stochastic Gravitational-Wave Background (SGWB) from inflation provides information about the earliest universe. However, in this Letter, we present a different picture. Our analysis starts from the observation that the i...
Hongguang Zhang, Zhengyang Qiu et al.
#astro-ph.CO
Prépublication
· 2026 arXiv
EN
Forthcoming cosmic microwave background (CMB) experiments are targeting ambitious science goals, including the exploration of the particle content of the Universe across cosmic times and the search for the faint signal from primordial gravitational waves. To p...
Camille Demay, Magdy Morshed et al.
#astro-ph.CO
Prépublication
· 2026 arXiv
EN
We reanalyze the total solar eclipse images taken with a consumer camera during the Artemis II lunar flyby, using the RAW data as ground truth for our previous analysis of the released JPEG image. Calibrated with field stars, the RAW data show that the lens vi...
Kohji Tsumura, Ko Arimatsu
#astro-ph.SR
Prépublication
· 2026 arXiv
EN
Galaxy-to-galaxy stochasticity may be less important for reionization, IGM heating, and the 21-cm signal than commonly assumed. We find that most of its apparent impact arises because introducing or removing scatter changes the mean emissivity of the galaxy po...
Shihai Zhu, Yuxiang Qin
#astro-ph.CO
Prépublication
· 2026 arXiv
EN
We point out that for black holes (BH) of the same mass, despite of arising from two entirely different physical arguments, the peak frequency of the coarse-grained gravitational wave (GW) spectrum of gravitons $f_\text{peak}^\text{graviton}$ is very close to...
Ngo Phuc Duc Loc
#hep-ph
Prépublication
· 2026 arXiv
EN
Higher-order curvature corrections to general relativity arise naturally in many fundamental theories and provide phenomenologically interesting low-energy effective field theories. However, higher-derivative terms can introduce ghost modes, which call the val...
Antonio De Felice, Guillem Domènech et al.
#gr-qc
Texte transcrit
· 1876 Wikisource
FR
Extrait : l’IsèreAdolphe Joanne1876TDivisions administratives.Joanne, Géographie de l’Isère, 1876.djvuJoanne, Géographie de l’Isère, 1876.djvu/135-39 Le département de l’Isère
Wikisource
#Géographie
Texte transcrit
Wikisource
FR
Extrait : Divisions administratives. bookGéographie du département de la SavoieAdolphe Joanne1901VDivisions administratives.Joanne-Géographie du département de la Savoie
Wikisource
#Géographie
Texte transcrit
· 1798 Wikisource
FR
Extrait : Marie-Nicolas Bouillet (1798-1865) Dictionnaire universel d'histoire et de géographie Liste des parties : A-H - I-Z Catalogue des Dictionnaires
Wikisource
#Géographie