Anderson means son of ander but the word ander meaning sweedish form of old Norse arndor which means eagle of thor can the name Anderson have the meaning eagle of thor?

No, it has no such meaning at all.

The '-son' suffix indicates it was a created surname using a father's first name. The 'Ander' part indicates that father's name was something like Anders or Andrew, which is derived from the name Andreas, Greek for "manly".