X-rays from the eclipsing millisecond pulsar PSR J1740-5340 in the globular cluster NGC 6397

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Table 1:

List of Chandra observations of PSR J1740-5340 in NGC 6397
Obs. date	Obs. ID	Instrument	Data mode	Effective exp. time	Orbital phase	Net count rate^a	Off-axis(')
2000-07-31	79	ACIS-I	Faint	48.3 ks	0.146-0.553	$1.89 \pm 0.25$ ^b	0.8745
2002-05-13	2668	ACIS-S	Faint	28.1 ks	0.035-0.267	$1.74 \pm 0.25$	0.9368
2002-05-15	2669	ACIS-S	Faint	26.7 ks	0.501-0.719	$2.89 \pm 0.33$	0.9214
2007-06-22	7461	ACIS-S	Very Faint	90.0 ks	0.189-0.950	$2.26 \pm 0.16$	0.3732
2007-07-16	7460	ACIS-S	Very Faint	149.6 ks	0.437-1.714^c	$2.92 \pm 0.14$	0.2129

Notes. ^(a) ACIS-S net count rates in units of 10^-3 counts/s corrected to the on-axis. ^(b) The ACIS-I on-axis net count rate is $1.31\pm0.17$ . In order to derive a comparable ACIS-S net count rate from the observed ACIS-I rate we convert the ACIS-I rate by using the WebPIMMS tool (http://heasarc.gsfc.nasa.gov/Tools/w3pimms.html). ^(c) The total exposure time covers more than one binary orbit.

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