Table 2.
The Magnificent Seven.
| Object | kT∞ | P | p.f.a | Ṗ | Bdip | τ | tkin | mBb | dc | Ref. |
|---|---|---|---|---|---|---|---|---|---|---|
| (eV) | (s) | (%) | (s s−1) | (1013 G) | (Myr) | (Myr) | (mag) | (pc) | ||
| RX J0420.0−5022 | 48 | 3.45 | 17 | −2.8 × 10−14 | 1.0 | 1.95 | ? | 26.6 | ∼345 | (1) |
| RX J0720.4−3125 | 84−94 | 16.78 | 8−15 | −1.40 × 10−13 | 5.0 | 1.91 | 0.85 | 26.6 | 286 |
(2) |
| RX J0806.4−4123 | 95 | 11.37 | 6 | −5.50 × 10−14 | 2.5 | 3.24 | ? | > 24 | ∼250 | (3) |
| RX J1308.6+2127 | 100 | 10.31 | 18 | −1.12 × 10−13 | 3.5 | 1.45 | 0.55/0.90/1.38 | 28.4 | ? | (4) |
| RX J1605.3+3249 | 100 | ? | < 2 | ? | ? | ? | 0.45 | 27.2 | ∼390 | (5) |
| RX J1856.5−3754 | 61 | 7.06 | 1 | −2.97 × 10−14 | 1.5 | 3.80 | 0.42−0.46 | 25.2 | 120 |
(6) |
| RX J2143.0+0654 | 104 | 9.43 | 4 | −4.00 × 10−14 | 1.9 | 3.72 | ? | > 26 | ∼430 | (7) |
Notes. Values in the table were taken from Haberl (2007) and Pires et al. (2014) and updated when more recent results were available.
Optical magnitudes are taken from Kaplan (2008).
Distance estimates indicated by ∼ are from Posselt et al. (2007).
References. (1) Haberl et al. (1999, 2004a), Kaplan & van Kerkwijk (2011); (2) Haberl et al. (1997), Cropper et al. (2001), Zane et al. (2002), de Vries et al. (2004), Haberl et al. (2004b), Kaplan & van Kerkwijk (2005a), Tetzlaff et al. (2011), Hohle et al. (2012a), Borghese et al. (2015), Hambaryan et al. (2017); (3) Haberl et al. (1998, 2004a), Kaplan & van Kerkwijk (2009a); (4) Schwope et al. (1999), Haberl et al. (2003), Kaplan & van Kerkwijk (2005b), Schwope et al. (2007), Tetzlaff et al. (2010), Hambaryan et al. (2011), Borghese et al. (2017); (5) Motch et al. (1999), van Kerkwijk et al. (2004), Motch et al. (2009), Tetzlaff et al. (2012), Pires et al. (2014, 2017); (6) Walter et al. (1996), Walter (2001), Burwitz et al. (2001, 2003), Tiengo & Mereghetti (2007), Walter et al. (2010), Tetzlaff et al. (2011), Mignani et al. (2013); (7) Zampieri et al. (2001), Zane et al. (2005), Kaplan & van Kerkwijk (2009b).
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