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We present Chandra detections of x-ray emission from the AGN in two giant LowSurface Brightness (LSB) galaxies, UGC 2936 and UGC 1455. Their x-rayluminosities are 1.8\times10^{42} ergs/s and 1.1\times10^{40} ergs/srespectively. Of the two galaxies, UGC 2936 is radio loud. Together withanother LSB galaxy UGC 6614 (XMM archival data) both appear to lie above theX-ray-Radio fundamental plane and their AGN have black hole masses that are lowcompared to similar galaxies lying on the correlation. However, the bulges inthese galaxies are well developed and we detect diffuse x-ray emission fromfour of the eight galaxies in our sample. Our results suggest that the bulgesof giant LSB galaxies evolve independently of their halo dominated disks whichare low in star formation and disk dynamics. The centers follow an evolutionarypath similar to that of bulge dominated normal galaxies on the Hubble Sequencebut the LSB disks remain unevolved. Thus the bulge and disk evolution aredecoupled and so whatever star formation processes produced the bulges did notaffect the disks.

Chandra Observations of Nuclear X-ray Emission from Low Surface Brightness Galaxies