Bleached corals are still alive. I have visited Seribu Islands just a month ago and observed a large patches of bleached corals here.

Agreed with the above statements. One thing to add, is while it is hard to tell for certain in your photos, I would say they look like bleaching may be occurring but they are still alive. One way to tell a bleached coral from a dead coral, is that dead corals tend to quickly get covered by algae. 

I think it could be valuable to read Hoegh-Guldbergh's article from 1999, where he gives a review of the subject. In there he states: "Most evidence currently indicates that elevated temperature is the cause of mass bleaching events. Increasing water temperature will rapidly cause zooxanthellae to leave the tissues of reef-building corals and other invertebrates (Hoegh-Guldberg and Smith 1989) resulting in a reduced number of zooxanthellae in the tissues of the host (Coles and Jokiel 1977, 1978, Hoegh-Guldberg and Smith, 1989, Glynn and D'Croz 1990, Lesser et al. 1990)." I myself wouldn't be satisfied until I'd see live, active polyps in the bleached corals, since it take a while before algae start colonizing the dead coral skeletons. Some corals survive a bleaching event, but not all. Rowan 2004 has written an article about thermal adaptation of the symbionts with a lot of detail in the physiology. (http://myweb.facstaff.wwu.edu/shulld/ESCI%20432/Rowan2004.pdf) The type of symbiont is apparently very important, and different coral species has associated with a different species of symbiont, which makes different coral species more or less susceptible to bleaching.

Also the area affected in the photos is quite small

Dear Barkah Aris,

Going back to your pictures: All three pics do not show distinct indications of bleaching. The colonies you indicated appear in reasonable living condition. However, in picture coral3, and also coral2, some subtrate sections in the circles are covered with some turf algae and/or sediment (the greyish sections), not all is living coral. The yellowish colonies appear in healthy condition, as far as can be detected from the photograph. The ligther coloured colony tips in coral1 might be newly grown sections of tissue not yet fully colonized with symbiont zoox. Hope this helps.

Cheers and good luck, Goetz.

According to my point of view, Yes, Most probably bleached. But some possibility to recover. Corals are live if bleached. If not remove stress condition liable to death.