Aql X-1 transition towards the soft (banana) state accompanied by radio/NIR detection

G. R. Sivakoff; J. Miller-Jones; O. Fox; M. Linares; D. Altamirano; D. Russell

Aql X-1 transition towards the soft (banana) state accompanied by radio/NIR detection

G. R. Sivakoff, J. Miller-Jones, O. Fox, M. Linares, D. Altamirano, D. Russell

Physics

Research output: Contribution to journal › Article

Abstract

The currently active neutron star transient and atoll source Aql X-1 (Linares et al., ATEL #2288) has begun the transition from the hard (extreme island) state to the soft (banana) state (Rodriguez et al. ATEL #2299). This transition likely began around 2009 Nov 15 (MJD = 55150). The latest RXTE PCA observation (2009 Nov 17, MJD=55152.17+/-0.02, 2-60 keV fractional rms variability amplitude of ~11% for 0.1-10 Hz) indicates that the source is in the intermediate (island) state.

Original language	English (US)
Journal	The Astronomer's Telegram
Volume	2302
State	Published - Nov 1 2009

Keywords

Radio
Infra-Red
X-ray
Request for Observations
Binaries
Neutron Stars
Transients
Variables

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http://adsabs.harvard.edu/abs/2009ATel.2302....1S

Cite this

@article{e4aef1e5a32c4ba7ae7324991f7454ce,

title = "Aql X-1 transition towards the soft (banana) state accompanied by radio/NIR detection",

abstract = "The currently active neutron star transient and atoll source Aql X-1 (Linares et al., ATEL #2288) has begun the transition from the hard (extreme island) state to the soft (banana) state (Rodriguez et al. ATEL #2299). This transition likely began around 2009 Nov 15 (MJD = 55150). The latest RXTE PCA observation (2009 Nov 17, MJD=55152.17+/-0.02, 2-60 keV fractional rms variability amplitude of ~11% for 0.1-10 Hz) indicates that the source is in the intermediate (island) state.",

keywords = "Radio, Infra-Red, X-ray, Request for Observations, Binaries, Neutron Stars, Transients, Variables",

author = "Sivakoff, {G. R.} and J. Miller-Jones and O. Fox and M. Linares and D. Altamirano and D. Russell",

year = "2009",

month = nov,

day = "1",

language = "English (US)",

volume = "2302",

journal = "The Astronomer's Telegram",

}

TY - JOUR

T1 - Aql X-1 transition towards the soft (banana) state accompanied by radio/NIR detection

AU - Sivakoff, G. R.

AU - Miller-Jones, J.

AU - Fox, O.

AU - Linares, M.

AU - Altamirano, D.

AU - Russell, D.

PY - 2009/11/1

Y1 - 2009/11/1

N2 - The currently active neutron star transient and atoll source Aql X-1 (Linares et al., ATEL #2288) has begun the transition from the hard (extreme island) state to the soft (banana) state (Rodriguez et al. ATEL #2299). This transition likely began around 2009 Nov 15 (MJD = 55150). The latest RXTE PCA observation (2009 Nov 17, MJD=55152.17+/-0.02, 2-60 keV fractional rms variability amplitude of ~11% for 0.1-10 Hz) indicates that the source is in the intermediate (island) state.

AB - The currently active neutron star transient and atoll source Aql X-1 (Linares et al., ATEL #2288) has begun the transition from the hard (extreme island) state to the soft (banana) state (Rodriguez et al. ATEL #2299). This transition likely began around 2009 Nov 15 (MJD = 55150). The latest RXTE PCA observation (2009 Nov 17, MJD=55152.17+/-0.02, 2-60 keV fractional rms variability amplitude of ~11% for 0.1-10 Hz) indicates that the source is in the intermediate (island) state.

KW - Radio

KW - Infra-Red

KW - X-ray

KW - Request for Observations

KW - Binaries

KW - Neutron Stars

KW - Transients

KW - Variables

M3 - Article

VL - 2302

JO - The Astronomer's Telegram

JF - The Astronomer's Telegram

ER -

Aql X-1 transition towards the soft (banana) state accompanied by radio/NIR detection

Abstract

Keywords

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