"The Case of RX J1856..."
The Case of RX J1856.5-3754

The "Magnificent Seven"
RX J1856.5-3754 (Walter et al. 1996)
RX J0720.4-3125 (Haberl et al. 1996)
RX J0806.4-4132 (Haberl et al. 1998)
RX J1605.3+3249 (RBS 1556, Schwope et al. 1999)
RX J1308.6+2127 (RBS 1223, Schwope et al. 1999)
RX J04020.0-5022 (Haberl et al. 1999)
1RXS J214303.7+065419 (RBS 1774, Zampieri et al. 2001)

The striking case of RX J1856.5-3754
500 ks DDT Chandra exposure

The striking case of RX J1856.5-3754
"Is RX J1856.5-3754 the..."
Is RX J1856.5-3754 the first quark/strange star discovered ?

"Braje and Romani,"
Braje and Romani, 2002

"Braje and Romani,"
Braje and Romani, 2002

"Lai & Salpeter (1997..."
Lai & Salpeter (1997), Lai (2001): NSs may be left without an atmosphere if they are cool enough. Onset of a phase transition
A gaseous atmosphere turns into a solid when T < Tcrit(B)

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