output
19922026
most citedGaia Data Release 2. Summary of the contents and survey properties

8.6k citations

5,958 papers

astro-ph.SR2026

Ultraviolet accretion continua reveal a transition in T Tauri magnetic topology

Ana I Gomez de Castro

Magnetic fields regulate accretion in T Tauri stars (TTSs) and evolve as radiative cores emerge during pre-main-sequence contraction. Stars above ~0.35-0.5 Msun transition from ful…

astro-ph.SR2026

Open Clusters as Laboratories for Cool Star Evolution: Highlights from the Cool Stars 23 Splinter Session

Deepak Chahal, Beatrice Caccherano, Edward Gillen +16

Open clusters remain among the most powerful laboratories for calibrating how fundamental stellar properties such as rotation, magnetic activity, surface chemistry, and internal st…

astro-ph.HE2026

Revisiting EBL Constraints from Gamma-Ray Observations: A Critical Assessment and Methodological Improvements

K. Abe, S. Abe, J. Abhir +185

The extragalactic background light (EBL), ranging from the infrared to the ultraviolet bands, is the second most intense photon field in the universe, surpassed only by the cosmic…

cond-mat.str-el2026★ 2 cited

Vertical quantum confinement in bulk MoS

Jairo Obando-Guevara, Álvaro González-García, Marcin Rosmus +5

We experimentally observe quantum confinement states in bulk MoS using Angle-Resolved Photoemission Spectroscopy (ARPES). The band structure at the point reveals q…

astro-ph.IM2026

Early Exploration of the Scientific Discovery Space for the Habitable Worlds Observatory

Courtney D. Dressing, Danica Adams, Evelyne Alecian +324

The Habitable Worlds Observatory (HWO) is a future NASA flagship mission concept identified by the Astro2020 Decadal Survey as the highest priority for large space missions. HWO sh…

astro-ph.HE2026

Constraints on the VHE counterpart of two binary black hole mergers observed by the MAGIC and CTAO LST-1 telescopes

K. Abe, S. Abe, J. Abhir +358

We present very-high-energy gamma-ray observations of two binary black hole merger candidates, GW240615_113620 and GW241125_010116, performed with the Major Atmospheric Gamma Imagi…

physics.ins-det2026

Establishing an independent measurement traceability for 60-Co Air Kerma

Néstor Cornejo-Díaz, Cristina García-Mulas, Paz Aviés-Lucas

An independent air kerma traceability chain for Co radiation protection levels has been successfully established at the CIEMAT Ionizing Radiation Metrology Laboratory (LMRI-…

astro-ph.GA2026

Chemical modelling of interstellar MgS

M. Rey-Montejo, I. Jimenez-Serra, T. Millar +8

The detection of magnesium sulphide (MgS) and sodium sulphide (NaS) towards the Galactic Center molecular cloud G+0.693 constitutes the first detection of metal sulphides in the in…

math.NA2026

Approximation of solutions of parameter-dependent problems by residual neural networks

Ana Carpio

We develop a convergent scheme to train neural networks involving analytic activation functions based on gradient flows. Convergence properties are guaranteed by Lojasiewicz theory…

quant-ph2026

Extending the Bloch sphere model to an N-qubit system

Francisco Piñero, Cristian Franco, Hernán I. de la Cruz +5

The Bloch sphere is an elegant tool for representing single-qubit states. However, a widely accepted generalization for multi-qubit systems with entanglement remains absent. We pro…

astro-ph.GA2026

The Galactic centre G+0.633-0.0604 molecular cloud: A new astrochemical gold mine: I. Gas physical properties

D. San Andrés, L. Colzi, V. M. Rivilla +4

In the Central Molecular Zone (CMZ), shocks play a key role in triggering star formation and driving chemical enrichment. The Sgr B2 complex is a prime template, hosting massive pr…

astro-ph.GA2026

Evolution of Chemistry in the envelope of HOt corinoS (ECHOS). III. Sulphur chemistry in the Class 0 objects HH 212 and NGC 1333 IRAS 4A

P. Fernández-Ruiz, A. Fuente, G. Esplugues +7

Our goal is to find chemical diagnostics to determine the physical conditions in protostellar envelopes and help establish the development of matter during the formation of a low-m…

astro-ph.GA2026

The OTELO Survey: The main sequence of low-mass galaxies

Bernabé Cedrés, Jordi Cepa, Carmen P. Padilla--Torres +15

This paper describes the relationship between the star formation rate and the stellar mass, the so-called main sequence (MS), of low-mass galaxies at three different redshifts from…

astro-ph.HE2026

Exploring the nature of Galactic unassociated sources detected by the Fermi-LAT

F. Acero, A. Acharyya, A. Adelfio +120

We investigate the nature of the unassociated sources detected by the Fermi-LAT close (|b|<10°) to the Galactic plane, representing 16% of all sources in the 4FGL-DR4 catalog. The…

astro-ph.GA2026

Star formation at z0.9 from the OTELO survey: A comprehensive view combining deep optical spectroscopy and infrared data

Rocío Navarro Martínez, Miguel Cerviño, Ricardo Pérez-Martínez +14

We aim to quantify the star formation rate (SFR) from deep optical spectroscopic data and far-infrared (FIR) photometry from a sample of galaxies at from the OTELO surv…

astro-ph.GA2026

Detection of a four-carbon sugar in interstellar space

Izaskun Jimenez-Serra, Juan Garcia de la Concepcion, Herma M. Cuppen +19

Sugars are essential biomolecules, serving as metabolic fuels, nucleic acid backbone components, and structural or energy-storage polymers. A central question in origin-of-life res…

astro-ph.HE2026★ 2 cited

Gamma-ray signature of superluminous supernovae: Fermi-LAT GeV detection of SN 2017egm and evidence of a central engine

F. Acero, A. Acharyya, A. Adelfio +116

Superluminous supernovae (SLSNe) are a rare class of transients with peak luminosities 10-100 times greater than those of standard core-collapse supernovae (SNe). The mechanisms po…

astro-ph.SR2026

Orbital motion and dynamical mass of the complex periodic variable binary system 2MASS J05082729-2101444

S. Curiel, G. N. Ortiz-León, V. J. S. Béjar +22

We used very long baseline interferometry to constrain the orbit of the binary system 2MASS J05082729-2101444. We observed the system with the VLBA in three epochs at a frequency o…

gr-qc2026

Hamiltonian formalism, master functions and Darboux transformations for perturbed (interiors and exteriors of) nonrotating black holes

Michele Lenzi, Guillermo A. Mena Marugán, Andrés Mínguez-Sánchez +1

Motivated by their relevance to the interior of nonrotating black holes, classical and quantum Kantowski-Sachs cosmologies have recently attracted increasing attention. This intere…

astro-ph.GA2026★ 3 cited

Bulgeless Evolution And the Rise of Discs (BEARD) I. Physical drivers of the mass-size relation for Milky Way-like galaxies

C. Marrero-de la Rosa, J. Méndez-Abreu, A. de Lorenzo-Cáceres +20

In the standard cold dark matter (CDM) cosmology, the existence of massive pure-disc galaxies remains challenging within the hierarchical framework and is key to understandi…

astro-ph.GA2026

Bulgeless Evolution And the Rise of Discs (BEARD) III. A numerical simulation view of satellites around Milky-Way analogues

Salvador Cardona-Barrero, Jairo Méndez-Abreu, Adriana de Lorenzo-Cáceres +17

. The existence of massive disc galaxies with little or no bulge challenges conventional cold dark matter model, which typically favours dynamically hot central structure…

astro-ph.GA2026★ 2 cited

Bulgeless Evolution And the Rise of Discs (BEARD) II. The role of mergers in shaping the Milky Way analogues in TNG50

Yetli Rosas-Guevara, Jairo Méndez-Abreu, Adriana de Lorenzo-Cáceres +20

We study the formation and evolution of bulgeless galaxies within the Milky Way-Andromeda analogue sample of the TNG50 simulation. Through kinematic decomposition with Mordor, we i…

astro-ph.GA2026★ 1 cited

Magnetised CGM Gas at z~1 revealed by SPICE-RACS

Sunil Malik, S. P. O'Sullivan, A. J. M. Thomson +17

Magnetic fields are expected to permeate the circumgalactic medium (CGM) of galaxies, yet direct constraints at high redshift remain limited by the lack of high-quality Faraday rot…

cond-mat.mtrl-sci2026

Thermal expansion of FeWO (Ferberite) and FeWO:FeWO (7:1): a comparative X-ray and neutron diffraction study

O. Fabelo, L. Cañadillas-Delgado, D. Vie +3

The thermal expansion of natural FeWO (ferberite) and synthetic FeWO:FeWO (7:1) was investigated over the 2-1123 K temperature range combining single-crystal and po…