[New-transient:82] Re: (Updating) Possible new source MAXI J1707-170

[nakahira]

Hi new-transient ML users, 

Follow up information on the possible new transient.
In the refined analysis using PSF fitting method, 
we obtain 4-10 keV fluxes (mCrab) as,
04/23 18:06 0.0015 +/- 0.0105
04/23 19:38 0.0194 +/- 0.0157
04/23 21:11 0.0222 +/- 0.0165
04/23 22:44 0.0034 +/- 0.0128
04/24 00:19 0.0469 +/- 0.0181
The signal-to-noise ratio for bright three scans is 2.9.

In the next four scan at 4/24 06:32, 08:04, 9:37 and 11:10, 
the source is not detected with an upper limit of 20 mCrab for each. 
Thus we conclude the source flux is not significant for now.

Regards,
Satoshi NAKAHIRA
JAXA

> Possible new source at (R.A., Dec.)=(256.852,-17.0370) with a position
> error of 0.55 deg (90% c.l.), although the statistical significance is
> still low. We tentatively name the source MAXI J1707-170.(nakahira)
> 
> =====================
> MAXI transient alert
> 2013-04-24 01:53:55 UT
> =====================
> 
> [Ground Trigger ID]
> ID          :  6406850001
> 
> [Count Weighted Position]
> RA,Dec: (256.747, -17.237)
> Galac.: (  4.968,  13.818)
> Eclip.: (257.290,   5.619)
> 
> [Triggered Criteria]
> 
> [Highest Significance]
> DPTC  : 1050803651
> UT    : 2013/04/24 01:53:55
> on    : 1d (S-band)
> sigma : -2.7
> 
> [Observed flux]
> S :    -19 +-     7 mCrab
> L :    -11 +-    11 mCrab
> M :    -27 +-    13 mCrab
> H :     52 +-    90 mCrab
> 
> nearby(r<5deg) object
> =====================
> dist  flux  (RA, Dec)        name
> [deg][mCrab]  [deg]
> =====================
> 2.75  unknown (254.76, -15.26)  MAXI J1659-152
> 
> [Sun/Moon (RA, Dec)]
> Sun :  (31.634, 12.815)
> Moon:  (188.407, -7.019)
> age: 13.46 day
> 
> [Latitude/Longitude]
> (21.79N, 62.40W)
> 
> 
> ---
> 
> For more information:
> http://maxi.riken.jp/alert/novae/6406850001/6406850001.htm
> 
> About MAXI data:
> http://maxi.riken.jp/
> 
>