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Identification of three new ultraluminous X-ray sources in NGC 4631 and NGC 1097: Evidence for stellar-mass black holes

Sinan Allak, Aysun Akyuz, Yasemin Aladag, Lorenzo Ducci and Andrea Santangelo

A&A, 707 (2026) A236

Published online: 10 March 2026

DOI: 10.1051/0004-6361/202557205

Sinan Allak

Aysun Akyuz

Yasemin Aladag

Lorenzo Ducci

Andrea Santangelo

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