2012ApJ...744...33G

Query : 2012ApJ...744...33G

2012ApJ...744...33G - Astrophys. J., 744, 33 (2012/January-1)

Pulsed gamma rays from the original millisecond and black widow pulsars: a case for caustic radio emission?

GUILLEMOT L., JOHNSON T.J., VENTER C., KERR M., PANCRAZI B., LIVINGSTONE M., JANSSEN G.H., JAROENJITTICHAI P., KRAMER M., COGNARD I., STAPPERS B.W., HARDING A.K., CAMILO F., ESPINOZA C.M., FREIRE P.C.C., GARGANO F., GROVE J.E., JOHNSTON S., MICHELSON P.F., NOUTSOS A., PARENT D., RANSOM S.M., RAY P.S., SHANNON R., SMITH D.A., THEUREAU G., THORSETT S.E. and WEBB N.

Abstract (from CDS):

We report the detection of pulsed gamma-ray emission from the fast millisecond pulsars (MSPs) B1937+21 (also known as J1939+2134) and B1957+20 (J1959+2048) using 18 months of survey data recorded by the Fermi Large Area Telescope and timing solutions based on radio observations conducted at the Westerbork and Nanay radio telescopes. In addition, we analyzed archival Rossi X-ray Timing Explorer and XMM-Newton X-ray data for the two MSPs, confirming the X-ray emission properties of PSR B1937+21 and finding evidence (∼4σ) for pulsed emission from PSR B1957+20 for the first time. In both cases the gamma-ray emission profile is characterized by two peaks separated by half a rotation and are in close alignment with components observed in radio and X-rays. These two pulsars join PSRs J0034-0534 and J2214+3000 to form an emerging class of gamma-ray MSPs with phase-aligned peaks in different energy bands. The modeling of the radio and gamma-ray emission profiles suggests co-located emission regions in the outer magnetosphere.

Abstract Copyright: ∼

Journal keyword(s): gamma rays: general - pulsars: general - pulsars: individual (PSR B1937+21, PSR B1957+20) - radiation mechanisms: non-thermal

Simbad objects: 13

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Number of rows : 13
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 PSR J0034-05 Psr 00 34 21.8281 -05 34 36.620           ~ 201 0
2 PSR J0218+42 Psr 02 18 06.3604 +42 32 17.365           ~ 365 2
3 V* CM Tau Psr 05 34 31.9474694616 +22 00 52.153698024           ~ 5476 0
4 PSR J1748-2446ad Psr 17 48 04.9 -24 46 04           ~ 141 1
5 Cl Terzan 5 Cl* 17 48 05.00 -24 46 48.0           ~ 948 1
6 PSR J1824-2452A Psr 18 24 32.009 -24 52 11.10           ~ 529 2
7 M 28 GlC 18 24 32.89 -24 52 11.4           ~ 821 0
8 PSR B1937+21.4 Psr 19 39 38.560096 +21 34 59.13552           ~ 1142 0
9 1FGL J1940.1+2209c gam 19 40 07 +22 09.9           ~ 5 0
10 PSR J1954+2836 Psr 19 54 19.144 +28 36 04.84           ~ 62 0
11 PSR J1958+2846 Psr 19 58 40.1015582448 +28 45 54.108736344           ~ 81 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 PSR J2214+3000 Psr 22 14 38.8480 +30 00 38.209           ~ 136 0

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