Astronomy & Astrophysics (A&A)

Open Access

Radiolysis versus photolysis of nitrile ices: Laboratory constraints for interstellar chemistry

Q. D. Borengasser, B. M. Moore, T. J. Hager, R. Johnson, K. T. Renshaw and B. M. Broderick

A&A, 709 (2026) A168

Published online: 13 May 2026

Open Access

A simple relation: Neutron star magnetic field strength and spectral shape at low mass accretion rates

Nicolas Zalot, Ekaterina Sokolova-Lapa, Aafia Zainab, Philipp Thalhammer, Jakob Stierhof, Katrin Berger, Katja Pottschmidt, Ralf Ballhausen, Christian Malacaria, Esin Gulbahar and Jörn Wilms

A&A, 709 (2026) A182

Published online: 13 May 2026

Open Access

Cosmological simulation of a radio synchrotron bridge between pre-merging galaxy clusters

K. Nishiwaki, G. Brunetti, F. Vazza and C. Gheller

A&A, 709 (2026) A191

Published online: 13 May 2026

Open Access

Novae breves from magnetar giant flares: Potential probes of neutron star crusts

Jiahang Zhong, Qiu-Hong Chen, Yacheng Kang, Hong-Bo Li, Jinghao Zhang, Meng-Hua Chen and Lijing Shao

A&A, 709 (2026) A195

Published online: 13 May 2026

Open Access

Gas rotation and turbulence in the galaxy cluster Abell 2029

T. Bartalesi, A. Simionescu, S. Ettori, C. Nipoti, V. Ghirardini, A. Sarkar and M. Sun

A&A, 709 (2026) A155

Published online: 13 May 2026

Open Access

CosmoGen: A genetic algorithm framework for the exploration of dark energy dynamics

D. Castelão and I. Tereno

A&A, 709 (2026) A159

Published online: 13 May 2026

Open Access

A new magnitude–redshift relation based on Type Ia supernovae

Ósmar Rodríguez and Alejandro Clocchiatti

A&A, 709 (2026) A162

Published online: 13 May 2026

Open Access

Mind the peak: Improving cosmological constraints from GWTC-4.0 spectral sirens using semiparametric mass models

Matteo Tagliazucchi, Michele Moresco, Nicola Borghi and Chiara Ciapetti

A&A, 709 (2026) A197

Published online: 13 May 2026

Open Access

Euclid: A blue galaxy population and a brightest cluster galaxy in the making in a z ∼ 1.74 MaDCoWS2 galaxy cluster candidate

A. Trudeau, A. H. Gonzalez, S. A. Stanford, S. Shamyati, S. Taamoli, D. Stern, P. R. M. Eisenhardt, B. Mobasher, K. Thongkham, B. Altieri et al. (145 more)

A&A, 709 (2026) A198

Published online: 13 May 2026

Open Access

The LOFAR sub-arcsecond view of the high-redshift radio relic in PSZ2 G091.83+26.11

G. Di Gennaro, R. Timmerman, M. Hoeft, F. de Gasperin, R. J. van Weeren, A. Botteon, M. Brüggen, J. M. G. H. J. de Jong, T. W. Shimwell, F. Sweijen et al. (7 more)

A&A, 709 (2026) A202

Published online: 13 May 2026