218
D. K. Galloway and L. Keek
Fig. 5.3 Burst light curves observed by the Rossi X-ray Timing Explorer (RXTE) Proportional
Counter Array (PCA) illustrating several different cases of ignition, labelled with the source name
and the recurrence time Δt, where known. The top panel shows likely pure He bursts ignited on
the neutron star in the ultracompact system 3A 1820−30. The second panel shows He-rich bursts
ignited after the accreted H has been exhausted at the base prior to ignition (case III in Table 5.1), in
the accretion-powered millisecond pulsar SAX J1808.4−3658. The third panel shows mixed H/He
bursts from the “Clocked burster”, GS 1826−24 (case V). The bottom panel shows an example of
a superburst observed from 4U 1636−536. Adapted from [56]
D. K. Galloway and L. Keek
Fig. 5.3 Burst light curves observed by the Rossi X-ray Timing Explorer (RXTE) Proportional
Counter Array (PCA) illustrating several different cases of ignition, labelled with the source name
and the recurrence time Δt, where known. The top panel shows likely pure He bursts ignited on
the neutron star in the ultracompact system 3A 1820−30. The second panel shows He-rich bursts
ignited after the accreted H has been exhausted at the base prior to ignition (case III in Table 5.1), in
the accretion-powered millisecond pulsar SAX J1808.4−3658. The third panel shows mixed H/He
bursts from the “Clocked burster”, GS 1826−24 (case V). The bottom panel shows an example of
a superburst observed from 4U 1636−536. Adapted from [56]