Hello, Thank you for sharing such a fabulous picture! I've never seen a Northern Goshawk, so to be honest, I can't tell from the photo. Did it have a bold whitish eyebrow. All accipiters, including northern goshawks, have a distinctive white grouping of feathers which form a band above the eye (the superciliary). In goshawks this band is thick and more pronounced than in the other members of the species.
The colorings of adult male and female northern goshawks range from slate blue-gray to black. Their backs, wing coverts, and heads are usually dark, and their undersides are white with fine, gray, horizontal barring. Their tails are light gray with three or four dark bands.
Northern Goshawks are mostly silent but you can listen to see if this is the call you heard at: http://www.allaboutbirds.org/guide/northern_goshawk/sounds