2014ApJ...794L..22K

Query : 2014ApJ...794L..22K

2014ApJ...794L..22K - Astrophys. J., 794, L22 (2014/October-3)

Discovery of an ultracompact gamma-ray millisecond pulsar binary candidate.

KONG A.K.H., JIN R., YEN T.-C., HU C.-P., HUI C.Y., TAM P.H.T., TAKATA J., LIN L.C.C., CHENG K.S., PARK S.M. and KIM C.L.

Abstract (from CDS):

We report multi-wavelength observations of the unidentified Fermi object 2FGL J1653.6-0159. With the help of high-resolution X-ray observations, we have identified an X-ray and optical counterpart to 2FGL J1653.6-0159. The source exhibits a periodic modulation of 75 minutes in the optical and possibly also in the X-ray. We suggest that 2FGL J1653.6-0159 is a compact binary system with an orbital period of 75 minutes. Combining the gamma-ray and X-ray properties, 2FGL J1653.6-0159 is potentially a black-widow-/redback-type gamma-ray millisecond pulsar (MSP). The optical and X-ray light curve profiles show that the companion is mildly heated by the high-energy emission and that the X-rays are from intrabinary shock. Although no radio pulsation has yet been detected, we estimated that the spin period of the MSP is ∼ 2 ms based on a theoretical model. If pulsation can be confirmed in the future, 2FGL J1653.6-0159 will become the first ultracompact rotation-powered MSP.

Abstract Copyright: ∼

Journal keyword(s): binaries: close - gamma rays: stars - pulsars: general - X-rays: binaries

Simbad objects: 14

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Number of rows : 14
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 PSO J080.8044-25.5318 G 05 23 13.0748610986 -25 31 54.492620030           ~ 56 0
2 V* BW Ant LXB 09 29 20.19 -31 23 03.2   18.50 18.63     ~ 194 0
3 PSR J1023+0038 Psr 10 23 47.6841824712 +00 38 41.005893516     17.31     GV 470 0
4 PSR J1311-3430 Psr 13 11 45.7292612136 -34 30 30.294149760   21.0   18.8   ~ 181 1
5 PSR J1653-0158 Psr 16 53 38.0717183664 -01 58 36.843092004   20.4   19.4   ~ 102 0
6 PSR J1723-2837 Psr 17 23 23.1937506912 -28 37 57.210408048   16.81 15.77 15.71   ~ 105 0
7 [HAC2010] NGC 6440 X-2 LXB 17 48 52.76 -20 21 24.0           ~ 74 0
8 [KRL2007b] 291 LXB 17 51 13.49 -30 37 23.4           ~ 262 0
9 SWIFT J1756.9-2508 LXB 17 56 57.35 -25 06 27.8           ~ 118 0
10 [KRL2007b] 304 LXB 18 06 59.8 -29 24 30           ~ 228 0
11 2MAXI J1900-248 LXB 19 00 08.65 -24 55 13.7     18.09     ~ 226 0
12 PSR J1959+2048 Psr 19 59 36.7643141520 +20 48 14.896407996   21.08 20.16 19.53 18.79 G: 854 3
13 V* LY Aqr Psr 20 51 07.52058 -08 27 37.6100           ~ 236 2
14 PSR J2339-0533 Psr 23 39 38.7412778376 -05 33 05.108592528     18.48     ~ 149 0

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