Left: change in spatially integrated X-ray DOP versus energy for four different heliocentric angles of 20°, 40°, 60° and 80° (as shown by the coloured dots). In this example, all electron distributions are beamed with E_H = 100 keV (top panel) and E_H = 300 keV (bottom panel). Right: change in spatially integrated X-ray DOP and flux versus energy for different loop tilts of τ = 0°, 25°, 45° (the apex of the loop is tilted by an angle relative to the local vertical – see small cartoon). Each (left and right) uses the following identical electron properties of: δ = 5, E_c = 20 keV (grey dotted line), and Ṅ = 7 × 10³⁵ e s⁻¹, and corona plasma properties of: n = 3 × 10¹⁰ cm⁻³ and T = 20 MK. All spectra include an albedo component and a coronal background thermal component (EM = 0.9 × 10⁴⁸ cm⁻³).