New NGC 6440 transient declining rapidly

Bibcode
2009ATel.2143....1H
Heinke, C. O.; Budac, S. A.; Altamirano, D.; Linares, M.; Wijnands, R.; Cohn, H. N.; Lugger, P. M.; Strohmayer, T. E.; Servillat, M.; Grindlay, J. E.
Referencia bibliográfica

The Astronomer's Telegram, #2143

Fecha de publicación:
8
2009
Número de autores
10
Número de autores del IAC
0
Número de citas
5
Número de citas referidas
2
Descripción
The new transient LMXB in NGC 6440 (CXOGlb J174852.7-202124; Atel #2139) is declining rapidly. RXTE observed NGC 6440 on July 30 (18:47 to 19:26 TT). The PCA top-layer spectrum is well fit with an absorbed power-law of photon index 2.2+-0.1, with N_H set to 6e21 cm^-2 (as found by Chandra). The inferred 0.5-10 keV luminosity is 4e35 ergs/s, a decline by a factor of 3.5 from the Chandra observation ~2 days earlier.
Tipo
Sin árbitro
Estrellas de neutrones

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