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arXiv · 2607.06305

Exploring Image-Text Alignment for Radio Galaxy Morphologies

Erica Lastufka·Mariia Drozdova·Svyatoslav Volosynovskiy
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Abstract

We investigate whether specially constructed text captions can capture the same morphological information as radio galaxy images. Using the MiraBest dataset, we generate captions with a domain-specific prompt and evaluate their alignment with images through the SigLIP-2 vision--language model, with and without LoRA fine-tuning. Results show that caption-based classification of FR-I and FR-II galaxies performs similarly to images, with fine-tuning improving local coherence of embeddings but not global alignment.

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Erica Lastufka, Mariia Drozdova, Svyatoslav Volosynovskiy. 2026-07-07. Exploring Image-Text Alignment for Radio Galaxy Morphologies. https://arxiv.org/abs/2607.06305

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