Board Thread:Questions and Answers/@comment-14.200.67.213-20140711091627/@comment-125.60.240.201-20140711120118

Why are the Railgun volumes published so far apart?

Because the mangaka needs to draw a set amount of pages for the volume. The mangaka draws a few pages of the story, grouped together and called chapters. These chapters are published monthly in a Manga magazine or mangazine along with other serialized manga stories from the same imprint. Which in this case is Dengeki Daioh. The reason why the volumes are published so far part is because the mangaka publishes only a few pages of content monthly. Usually there should be at least 30-40 pages per chapter published, but in recent times it bogged to only 20. This is why the volumes cannot be published because there aren't just enough pages. This should also answer your question on why there is already a scanlation for volume 10: the Railgun and Accelerator scanlations take their scans from the magazine version of the chapter.

Are the English scanlations of Index volumes behind?

Yes. The entirety of the Toaru Majutsu no Index manga has the unfortunate distinction of being ignored because the anime has already covered it. Not to mention the fact that the scanlators are slower than molasses (they are still in the Tree Diagram Remnant Arc of the manga), and the fact that the raws for both magazine and tankbon (manga volumes) scans, the future of the Index manga is bleak.

As for the Othinus thing you read, that refers to a character in the lastest LIGHT NOVEL VOLUME. The light novel volumes are totally different from the manga, and is the primary source for nearly all of the information of the wiki. It is also  completly scanned and translated.