Bibcode
                                    
                            Nooraee, N.; Callanan, P.; Garcia, M.
    Referencia bibliográfica
                                    The Astronomer's Telegram, #2294
Fecha de publicación:
    
                        11
            
                        2009
            
  Número de citas
                                    1
                            Número de citas referidas
                                    1
                            Descripción
                                    Based on a 5ks Chandra ACIS-I observation of M31 on Nov 11 2009,  we
report a dramatic brightening of CXOM31 J004321.1+411751,  [aka r3-7
(Kong et al. 2002 ApJ 577, 738),  source 437 (Pietsch, Freyberg, and
Haberl 2005 A&A 434, 483),  RX J0043.3+4117 (Supper et al. 2001
A&A 373, 63)].   The spectrum on Nov 11 can be well fit with a power
law with  photon index 2.1 ± 0.2 and Nh consistent with
the Galactic  value of 7E20 cm-2.