The solution to Laplace's equation in cylindrical coordinates are often expressed using the functions named after, for 10 points, what German astronomer and mathematician?
After this scientist noted discrepancies in his data with that of his colleague Friedrich Argelander, he was inspired to propose the recurrence relation "Q sub v minus one of X minus Q sub v plus one of X equals 2 times Q sub v of X" which generates functions named for this mathematician. Solving this man's namesake differential equation when it has a singularity at the origin yields equations of the form "Y sub v of x = cosine of v pi(*) J sub v of x minus J sub negative v of x all divided by sine v pi, where v I the order and J is this man's namesake functions of the first kind. Sirius A and Sirius B were shown to be a binary by this astronomer, who was the first to measure the distance to an extrasolar star. The solution to Laplace's equation in cylindrical coordinates are often expressed using the functions named after, for 10 points, what German astronomer and mathematician?
After this scientist noted discrepancies in his data with that of his colleague Friedrich Argelander, he was inspired to propose the recurrence relation "Q sub v minus one of X minus Q sub v plus one of X equals 2 times Q sub v of X" which generates functions named for this mathematician.
Friedrich Bessel