Consider an ``average'' dwarf nova that has a mass transfer rate of
M˙=1013.5 kg s−1=5×10−10 M⊙ yr−1
during an outburst that lasts for 10 days. Estimate the total energy released and the absolute magnitude of the dwarf nova during the outburst. Use values for Z Cha's white dwarf from Example 18.4.1. Neglect the small amount of light contributed by the primary and secondary stars.