2014A&A...572A...1S


Query : 2014A&A...572A...1S

2014A&A...572A...1S - Astronomy and Astrophysics, volume 572A, 1-1 (2014/12-1)

An X-ray and UV flare from the galaxy XMMSL1 J061927.1-655311.

SAXTON R.D., READ A.M., KOMOSSA S., RODRIGUEZ-PASCUAL P., MINIUTTI G., DOBBIE P., ESQUEJ P., COLLESS M. and BANNISTER K.W.

Abstract (from CDS):

New high variability extragalactic sources may be identified by comparing the flux of sources seen in the XMM-Newton Slew Survey with detections and upper limits from the ROSAT All Sky Survey. A detected flaring extragalactic source was monitored with Swift and XMM-Newton to track its temporal and spectral evolution. Optical and radio observations were made to help classify the galaxy, investigate the reaction of circumnuclear material to the X-ray flare, and check for the presence of a jet. In November 2012, X-ray emission was detected from the galaxy XMMSL1 J061927.1-655311 (a.k.a. 2MASX J06192755-6553079), a factor 140 times higher than an upper limit from 20 years earlier. Both the X-ray and UV flux subsequently fell over the following year by factors of 20 and 4, respectively. Optically, the galaxy appears to be a Seyfert I with broad Balmer lines and weak, narrow, low-ionisation emission lines, at a redshift of 0.0729. The X-ray luminosity peaks at LX∼8x1043erg/s with a typical Sy I-like power-law X-ray spectrum of Γ∼2. The flare has either been caused by a tidal disruption event or by an increase in the accretion rate of a persistent active galactic nucleus.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: individual: XMMSL1 J061927.1-655311 - X-rays: galaxies

Simbad objects: 25

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Number of rows : 25
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 Mrk 335 Sy1 00 06 19.5372339024 +20 12 10.617404076   14.19 13.85     ~ 1180 0
2 LEDA 87392 Sy1 00 39 15.8339634552 -51 17 01.481641692   15.77 15.28 15.66   ~ 125 0
3 2MASX J01190869-3411305 AGN 01 19 08.6635573080 -34 11 30.527946780   16.226   15.275   ~ 50 0
4 2MASS J01395577+0619225 Sy1 01 39 55.7697705024 +06 19 22.520805888   16.80 17.00     ~ 165 0
5 PKS 0515-674 Rad 05 15 37.30 -67 21 28.0           ~ 21 1
6 ESO 362-18 Sy2 05 19 35.8118941104 -32 39 27.923120568   13.81 13.37 12.73   ~ 221 0
7 XMMSL1 J061927.1-655311 X 06 19 27.1 -65 53 11           ~ 6 0
8 [VV98] J062309.1-643624 BLL 06 23 07.6964410104 -64 36 20.722511484   17.06 14.80 13.59   ~ 82 0
9 NGC 2617 Sy1 08 35 38.7981089496 -04 05 17.901104280   13.6   12.63 13.2 ~ 153 0
10 2MASS J09520955+2143132 Sy1 09 52 09.5610270816 +21 43 13.317315096   18.56 18.10     ~ 42 0
11 NGC 3599 GiP 11 15 26.9494646448 +18 06 37.428503940   13.0       ~ 194 0
12 2MASS J12013602+3003052 G 12 01 36.0281668104 +30 03 05.576406012           ~ 35 0
13 M 91 LIN 12 35 26.4446761320 +14 29 46.760333748   14.63 13.57     ~ 561 0
14 IC 3599 Sy1 12 37 41.1939398400 +26 42 27.484266888   15.7 16.5     ~ 164 0
15 RX J1242.6-1119 PaG 12 42 36.9 -11 19 35           ~ 44 1
16 ESO 323-77 Sy2 13 06 26.1214861728 -40 24 52.595604396   13.58 13.42 12.01   ~ 213 0
17 2XMM J132342.2+482701 G 13 23 41.9755425624 +48 27 01.261293624           ~ 26 0
18 2MASS J14202436+5334117 BLL 14 20 24.3988020192 +53 34 11.158101156   20.49 20.03     ~ 34 0
19 PTF 10iya SN* 14 38 41.00 +37 39 33.6           ~ 29 0
20 NGC 5905 H2G 15 15 23.3280793632 +55 31 01.926808032   13.6       ~ 263 1
21 2MASX J16245665+7554560 BLL 16 24 56.5716973728 +75 54 55.975695048     16.60     ~ 52 0
22 GRB 110328A gB 16 44 49 +57 34.9           ~ 383 0
23 ICRF J193925.0-634245 Sy2 19 39 25.0245304992 -63 42 45.640373400   18.87 18.37 17.64   ~ 1101 1
24 2MASS J21145258+0607423 Sy1 21 14 52.5774985320 +06 07 42.433198104   16.06 15.77     ~ 203 0
25 PKS 2219-053 Rad 22 22 29.3 -05 06 40           ~ 1 0

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2022.08.10-19:45:55

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