Sun can be worshipped by physical asanas or just by meditation and mantras. Here is a "visualization" of sun salutation with mantras and chants. The chants and sun salutations done during midsummer and solstice week actually amplifies the effect of solar energy and brings abundance and auspiciousness to our lives. Here is a discussion as well as chants and techniques on how to bring light of sun as part of your meditation and energywork.