Barbara Brennan describes shaktipat as the projection of the guru's "aura" on the disciple who thereby acquires the same mental state, hence the importance of the high spiritual level of the guru.
Agasha is also mentioned in the Churning of the Heart-Vol II by Swami Shivom Tirtha, a spiritual guru from India in the Shaktipat tradition and a disciple of Swami Vishnu Tirtha.