What Is the Name of the First X-Ray Binary That

question 145

Multiple Choice

What is the name of the first X-ray binary that was confirmed to include a black hole?

• A) Cygnus X-1
• B) Sag A*
• C) SS 433
• D) GW170817

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Definitions:

Pyridine

A basic heterocyclic organic compound with the formula C5H5N, featuring a ring structure similar to benzene but with one methine group (\(CH\)) replaced by a nitrogen atom.

Aromatic

Compounds that contain a planar ring of atoms that are stabilized by a delocalization of pi electrons according to Huckel's rule.

Antiaromatic

Antiaromatic compounds are cyclic, planar molecules that possess 4n π electrons (where n is an integer) and are destabilized due to their electronic structure, contradicting the stability seen in aromatic compounds.

Aromatic

Pertains to organic compounds that contain one or more planar rings of atoms with a degree of stability and special electronic structures.