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Table 1

List of the hard states (i.e. “plateau” state/class χ) of GRS 1915+105 between January 1996 (MJD 50 110) and May 2006 (MJD 53 883).

Start date End date Change in X-rays Change in radio Duration
(MJD) (MJD) (counts/s) (mJy) (Days)

50 286 50 297 42 → 40 110 → 100 11
50 732 50 736 36 → 33 94 → 87 4
50 926 50 989 45 → 34 154 → 31 63
51 522 51 546 39 → 33 78 → 50 24
52 315 52 354 43 → 36 122 → 73 41
52 729 52 783 46 → 33 163 → 68 54
53 077 53 116 39 → 31 122 → 70 39
53 416 53 466 52 → 42 197 → 112 50

Notes. The X-ray observations were measured as one day averages of the RXTE-ASM observations between 2 − 12 keV. Radio observations were taken at 15 GHz with the Ryle telescope (RT).

RXTE-ASM errors were typically less than 1 count/s.

RT errors are estimated at approximately  ± 6 mJy.

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