2018ApJ...854..161L


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.15CEST06:52:57

2018ApJ...854..161L - Astrophys. J., 854, 161-161 (2018/February-3)

Identification of the infrared counterpart of SGR 1935+2154 with the Hubble Space Telescope.

LEVAN A., KOUVELIOTOU C. and FRUCHTER A.

Abstract (from CDS):

We present deep Hubble Space Telescope observations of a new magnetar source, the soft gamma-repeater SGR 1935+2154, discovered by Swift. We obtained three epochs of observations: while the source was active in 2015 March, during a quiescent period in 2015 August, and during a further active phase in 2016 May. Close to the center of the X-ray error region identified by Chandra, we find a faint (F140W(AB) = 25.3) source, which fades by a factor of ∼2 over the course of 5 months between the first two epochs of observations, before rebrightening during the second active period. If this source is indeed the counterpart to SGR 1935+2154, then it is among the faintest yet located for a magnetar. Our observations are spaced over 1.3 years and enable us to place limits on the source velocity of µ = (60 ± 40) km s–1 kpc–1; observations on timescales of a decade can hence probe proper motion limits smaller than the velocities observed for the majority of pulsars. The comparison of the optical/IR and X-ray light curves of the source suggests that emission in the two regimes is associated but not directly correlated, offering support for a magnetospheric versus a fallback disk origin.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): stars: neutron - supernovae: general

Simbad objects: 17

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Number of rows : 17

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 PSR J0146+6145 Psr 01 46 22.21 +61 45 03.8   28.100 25.620     ~ 519 0
2 NAME Per Arm PoG 03 30 +45.0           ~ 1301 0
3 NAME Sgr J0418+5729 gam 04 18 33.867 +57 32 22.91           ~ 192 0
4 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 15288 1
5 2E 2336 HXB 10 50 08.93 -59 53 19.9           Be 385 0
6 PSR J1119-6127 Psr 11 19 14.30 -61 27 49.5           ~ 349 1
7 AJG 44 Psr 16 17 33.000 -51 02 00.00           ~ 465 3
8 2E 3623 X 16 17 36.30 -51 02 26.6           ~ 92 1
9 AX J1809.8-1943 Psr 18 09 51.07 -19 43 51.8           ~ 385 0
10 1WGA J1822.2-1604 X 18 22 18.32 -16 04 27.2           ~ 113 0
11 PSR J1846-0258 Psr 18 46 24.94 -02 58 30.1           ~ 310 2
12 3XMM J185246.6+003317 Psr 18 52 46.60 +00 33 20.9           ~ 28 0
13 GBS 1900+14 gB 19 07 13 +09 19.6           ~ 801 0
14 NAME Sgr 1935+2154 * 19 34 55.68 +21 53 48.2           ~ 208 1
15 SNR G057.2+00.8 SNR 19 35.0 +21 57           ~ 74 0
16 2E 4673 HXB 23 01 08.14 +58 52 44.5           ~ 597 1
17 NAME Local Arm reg ~ ~           ~ 396 0

    Equat.    Gal    SGal    Ecl

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2021.04.15-06:52:57

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