Table 2
Power-law slopes β and γ describing the cumulative luminosity distribution (see Sects. 2.3.1 and 2.3.2) for the known UCXB population based on the RXTE ASM data.
| Name | Porb (min) | β | γ |
|
|
|||
| 4U 1820–30 | 11.42 | −7.4 | −3.7 |
| 4U 0513–40 | 17 | −2.0 | −2.3 |
| 2S 0918–549 | 17.4 | −1.03 | −2.5 |
| 4U 1543–624 | 18.2 | −3.8 | −4.3 |
| 4U 1850–087 | 20.6 | −1.9 | −2.1 |
| M 15 X-2 | 22.58 | −1.6 | −3.0 |
| XTE J1807–294 | 40.07 | −2.4 | N/A |
| 4U 1626–67 | 41.4 | −3.0 | −2.5 |
| XTE J1751–305 | 42.42 | −2.5 | −0.55 |
| XTE J0929–314 | 43.58 | −2.8 | N/A |
| 4U 1916–05 | 49.48 | −2.8 | −2.5 |
| SWIFT J1756.9–2508 | 54.70 | −1.3 | −1.7 |
|
|
|||
| 4U 1728–34 | 10.77? | −6.3 | −0.66 |
| 4U 0614+091 | 51.3? | −3.2 | −4.1 |
Notes. The two systems below the line are UCXB candidates, with an uncertain orbital period. If no γ-value is given, the source is too faint on average for this method to work.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.