Can Retrieval Heads See Images? Multimodal Retrieval Heads in Long-Context Vision-Language Models. - Aaron Branson Cigres Li; Zhaowei Wang 003; Yu Zhao 043; Yiming Du; Haobo Li; Xiyu Ren; Ginny Y. Wong; Simon See; Lishu Luo; Haodong Duan; Pasquale Minervini; Yangqiu Song (CoRR, 2026)