1996A&AS..120C.559B

Query : 1996A&AS..120C.559B

1996A&AS..120C.559B - Astron. Astrophys., Suppl. Ser., 120C, 559-562 (1996/December-3)

BATSE observations of Seyfert 2 galaxies.

BASSANI L., MALAGUTI G., PACIESAS W.S., PALUMBO G.G.C. and ZHANG S.N.

Abstract (from CDS):

We use the BATSE Earth occultation technique applied to the LAD data to search for emission in the 20-100keV band from Seyfert 2 galaxies. Analysis from an initial sample of 17 objects indicates significant detection at (>6σ) from 5 objects, while marginal detection (3<σ<6) can be claimed for other 4, possibly 5, galaxies. The high rate (59% of the observed sample) of detection indicates both that Seyfert 2 galaxies are indeed hard X-ray emitters as expected by the unified theory of Seyfert galaxies and that BATSE has a high efficiency in discovering emission from this class of objects. Here, we report on these preliminary results, discuss their implications and outline future prospects of this on-going research program.

Abstract Copyright: ∼

Journal keyword(s): galaxies: Seyfert - gamma-rays: observations - X-rays: galaxies

CDS comments: Special Issue "3rd Compton Symposium". Table 1 : 2353+299 = IRAS 23531+2955

Simbad objects: 16

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Number of rows : 16
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 LEDA 3530 GiC 00 59 04.10739 +01 00 04.2130   17.2 16.09 16.6 16.6 ~ 42 0
2 NGC 1614 Sy1 04 34 00.027 -08 34 44.57   14.66 13.99     ~ 697 1
3 NGC 2110 Sy2 05 52 11.3768668776 -07 27 22.507465392   14.77 13.51 11.86   ~ 712 1
4 Mrk 78 Sy2 07 42 41.7033384240 +65 10 37.447730076   15.57 14.58     ~ 386 3
5 MCG-05-23-016 Sy2 09 47 40.1332188528 -30 56 55.960779696   14.10 13.69 12.44   ~ 611 0
6 NGC 4388 Sy2 12 25 46.820 +12 39 43.45 11.91 11.76 11.02     ~ 1433 2
7 NGC 4507 Sy2 12 35 36.6338976888 -39 54 33.710416272   12.95 13.54 11.70 12.4 ~ 532 1
8 NGC 4922N Sy2 13 01 25.2660290577 +29 18 49.879144069   15.60 14.67 13.85   ~ 265 5
9 NGC 4945 Sy2 13 05 27.279 -49 28 04.44   9.31 14.40 7.55   ~ 1582 2
10 Z 103-14 Sy2 13 56 02.89833 +18 22 18.2982   14.8 14.22     ~ 413 2
11 NGC 5506 Bla 14 13 14.8761010056 -03 12 27.556909272   15.25 14.38     ~ 1173 1
12 NGC 6300 Sy2 17 16 59.5418094960 -62 49 13.946588832   10.88 13.08 9.44 10.2 ~ 478 1
13 NGC 6394 Sy2 17 30 21.4214207088 +59 38 23.604551520   15.27       ~ 106 1
14 NGC 7172 Sy2 22 02 01.897 -31 52 11.60   12.72 13.61 11.15 25.10 ~ 572 2
15 NGC 7582 Sy2 23 18 23.60 -42 22 13.3 11.62 10.92 10.62     ~ 978 3
16 Z 498-38 Sy2 23 55 44.2394896128 +30 12 44.562433356   15.2       ~ 43 1

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