GbmSaaPolygon5

class gdt.missions.fermi.gbm.saa.GbmSaaPolygon5

Bases: SouthAtlanticAnomaly

The coordinates of the GBM SAA boundary in latitude and East longitude used from 14:13:00 UTC on July 20, 2010 until 14:20:00 UTC on June 7, 2022.

Note: Revised polygon proposed by Jerry Fishman, Michael Briggs, and Vandiver Chaplin. This is smaller area than the original GbmSaaPolygon1 but avoids issues with local particle triggers seen in GbmSaaPolygon2-4.

Attributes Summary

latitude	The latitude points of the boundary
longitude	The longitude points of the boundary
num_points	Number of vertices in polygon

Methods Summary

is_closed()	Test if the boundary represents a closed polygon.
is_convex()	Test if the boundary represents a convex polygon.

Attributes Documentation

latitude

The latitude points of the boundary

Type:

(np.array)

longitude

The longitude points of the boundary

Type:

(np.array)

num_points

Number of vertices in polygon

Type:

(int)

Methods Documentation

is_closed()

Test if the boundary represents a closed polygon. A closed polygon is one where the first and last points are equal.

Returns:

(bool)

is_convex()

Test if the boundary represents a convex polygon. The test is performed by measuring every interior angle of the polygon and checking if all angles are < 180 deg. The definition of a convex polygon is one where all interior angles are < 180 deg.

Returns:

(bool)