2023RAA....23i5007L

Query : 2023RAA....23i5007L

2023RAA....23i5007L - Research in Astron. and astroph., 23, part no 9, 5007 (2023/September-0)

The Lobster Eye Imager for Astronomy Onboard the SATech-01 Satellite.

LING Z.X., SUN X.J., ZHANG C., SUN S.L., JIN G., ZHANG S.N., ZHANG X.F., CHANG J.B., CHEN F.S., CHEN Y.F., CHENG Z.W., FU W., HAN Y.X., LI H., LI J.F., LI Y., LI Z.D., LIU P.R., LV Y.H., MA X.H., TANG Y.J., WANG C.B., XIE R.J., XUE Y.L., YAN A.L., ZHANG Q., BAO C.Y., CAI H.B., CHENG H.Q., CUI C.Z., DAI Y.F., FAN D.W., HU H.B., HU J.W., HUANG M.H., JIA Z.Q., JIN C.C., LI D.Y., LI J.Q., LIU H.Y., LIU M.J., LIU Y., PAN H.W., QIU Y.L., SUGIZAKI M., SUN H., WANG W.X., WANG Y.L., WU Q.Y., XU X.P., XU Y.F., YANG H.N., YANG X., ZHANG B., ZHANG M., ZHANG W.D., ZHANG Z., ZHAO D.H., CONG X.Q., JIANG B.W., LI L.H., QIU X.B., SUN J.N., SU D.T., WANG J., WU C., XU Z., YANG X.M., ZHANG S.K., ZHANG Z., ZHANG N., ZHU Y.F., BAN H.Y., BI X.Z., CAI Z.M., CHEN W., CHEN X., CHEN Y.H., CUI Y., DUAN X.L., FENG Z.G., GAO Y., HE J.W., HE T., HUANG J.J., LI F., LI J.S., LI T.J., LI T.T., LIU H.Q., LIU L., LIU R., LIU S., MENG N., SHI Q., SUN A.T., WANG Y.M., WANG Y.B., WU H.C., XU D.X., YANG Y.Q., YANG Y., YU X.S., ZHANG K.X., ZHANG Y.L., ZHANG Y.H., ZHANG Y.T., ZHOU H., ZHU X.C., CHENG J.S., QIN L., WANG L., WANG Q.L., BAI M., GAO R.L., JI Z., LIU Y.R., MA F.L., SHI Y.J., SU J., TAN Y.Y., TONG J.Z., XU H.T., XUE C.B., XUE G.F. and YUAN W.

Abstract (from CDS):

The Lobster Eye Imager for Astronomy (LEIA), a pathfinder of the Wide-field X-ray Telescope of the Einstein Probe mission, was successfully launched onboard the SATech-01 satellite of the Chinese Academy of Sciences on 2022 July 27. In this paper, we introduce the design and on-ground test results of the LEIA instrument. Using state-of-the-art Micro-Pore Optics (MPO), a wide field of view of 346 square degrees (18.°6 × 18.°6) of the X-ray imager is realized. An optical assembly composed of 36 MPO chips is used to focus incident X-ray photons, and four large-format complementary metal-oxide semiconductor (CMOS) sensors, each of size 6 cm × 6 cm, are used as the focal plane detectors. The instrument has an angular resolution of 4'-8' (in terms of FWHM) for the central focal spot of the point-spread function, and an effective area of 2-3 cm2 at 1 keV in essentially all the directions within the field of view. The detection passband is 0.5-4 keV in soft X-rays and the sensitivity is 2-3 × 10–11 erg s–1 cm–2 (about 1 milliCrab) with a 1000 s observation. The total weight of LEIA is 56 kg and the power is 85 W. The satellite, with a design lifetime of 2 yr, operates in a Sun-synchronous orbit of 500 km with an orbital period of 95 minutes. LEIA is paving the way for future missions by verifying in flight the technologies of both novel focusing imaging optics and CMOS sensors for X-ray observation, and by optimizing the working setups of the instrumental parameters. In addition, LEIA is able to carry out scientific observations to find new transients and to monitor known sources in the soft X-ray band, albeit with limited useful observing time available.

Abstract Copyright: © 2023. National Astronomical Observatories

Journal keyword(s): instrumentation: detectors - space vehicles: instruments - telescopes - X-rays: general

Simbad objects: 34

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Number of rows : 34
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 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
2 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 7988 0
3 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
4 X LMC X-4 HXB 05 32 49.5556042296 -66 22 13.202721768   13.9 14.0 14.290   O8III 714 0
5 M 1 SNR 05 34 31.8 +22 01 03           ~ 6516 1
6 NAME LXT 221107A X 06 04.1 +12 46           ~ 8 0
7 HD 251108 Ro* 06 04 14.9929371672 +12 45 51.088959756   11.25 9.899   8.520 K2 20 0
8 NAME Vela SNR 08 34.0 -45 50           ~ 1331 2
9 V* V818 Sco LXB 16 19 55.0692669024 -15 38 25.017666540 11.60 12.40 11.1     Oev 1730 0
10 V* V1101 Sco LXB 17 05 44.4916006152 -36 25 23.049324480   20.10 18.6     ~ 473 0
11 ESO 454-29 GlC 17 27 33.24 -30 48 07.8           ~ 278 0
12 NAME Kepler's SN SNR 17 30 40.51 -21 29 14.4           ~ 851 3
13 V* V2216 Oph LXB 17 31 44.17 -16 57 40.9 16.40 17.10 16.8     ~ 329 1
14 NAME Slow Burster LXB 17 31 58.0 -33 49 58     15.50     ~ 865 1
15 ESO 455-23 GlC 17 35 47.80 -30 28 11.0           ~ 285 0
16 1ES 1735-26.9 LXB 17 38 17.6 -26 59 39           ~ 177 0
17 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
18 2E 3943 LXB 17 46 05.3 -29 30 52           ~ 217 1
19 [KRL2007b] 281 LXB 17 48 13.148 -36 07 57.02     20.9     ~ 115 0
20 4U 1746-371 LXB 17 50 12.66 -37 03 08.2     8.43     ~ 206 1
21 V* V4134 Sgr LXB 17 58 40.6 -33 48 27   19.20 18.5     ~ 183 0
22 4U 1758-25 LXB 18 01 09.7308060816 -25 04 44.120221284     11.08     ~ 705 1
23 X Sgr X-3 LXB 18 01 32.6 -20 31 45           ~ 254 1
24 SAX J1808.4-3658 LXB 18 08 27.58 -36 58 43.9           ~ 1051 0
25 V* V5512 Sgr LXB 18 14 31.3 -17 09 23     12.73     K5III 449 0
26 V* NP Ser LXB 18 16 01.7 -14 02 09   18.8       K 683 2
27 V* V691 CrA LXB 18 25 46.8185061768 -37 06 18.529336656 14.30 15.20 15.1     ~ 461 0
28 V* V4634 Sgr LXB 18 29 28.8 -23 47 48 18.90 19.40 19     ~ 399 0
29 Z 173-14 Sy1 18 35 03.3896172576 +32 41 46.855964616   16.50 15.39 10.50   ~ 688 1
30 HD 226868 HXB 19 58 21.6757355952 +35 12 05.784512688 9.38 9.72 8.91 8.42   O9.7Iabpvar 4590 0
31 NAME Cyg Loop SNR 20 51.0 +30 40           ~ 964 0
32 V* V1341 Cyg LXB 21 44 41.1544345272 +38 19 17.066570988 15.00 15.13 14.68 15.00   A9III 1229 1
33 NAME Cas A SNR 23 23 26.0 +58 48 41     14.30     ~ 3033 1
34 NAME Galactic Bulge reg ~ ~           ~ 4794 0

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