MAXI J0556-332 is a transient neutron-star Z source

Homan, Jeroen; Linares, Manu; van den Berg, Maureen; Fridriksson, Joel
Referencia bibliográfica

The Astronomer's Telegram, #3650

Fecha de publicación:
9
2011
Número de autores
4
Número de autores del IAC
0
Número de citas
11
Número de citas referidas
10
Descripción
We report on ongoing RXTE observations of the X-ray transient MAXI J0556-332. This source was discovered on 2011 January 11 (ATel #3102) and has since been monitored on an almost daily basis with RXTE. A preliminary X-ray color analysis of ~470 ks of RXTE/PCA data reveals a somewhat chaotic pattern without a clear structure in the color-color (CD) and hardness-intensity (HID) diagrams. However, analysis of shorter time intervals (~5-10 days) reveals tracks that strongly resemble those of the Z sources, the brightest neutron-star low-mass X-ray binaries (LMXBs).