Hard X-ray Modulation Telescope

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Hard X-ray Modulation Telescope
Mission type Astronomy
Operator CAS / IHEP
SATCAT no. 42758[1]
Website http://www.hxmt.org/
Mission duration Elapsed: 5 months, 5 days[2]
Spacecraft properties
Launch mass 2,800 kg (6,200 lb)[2]
Dimensions 2.0 × 2.0 × 2.8 m (6.6 × 6.6 × 9.2 ft)[2]
Start of mission
Launch date June 14, 2017, 03:00:00 (2017-06-14UTC03) UTC [2]
Rocket Long March 4B[2]
Launch site 603 Launch Pad of the LC43 Launch Complex, Jiuquan Satellite Launch Center[2]
Orbital parameters
Reference system Geocentric[1]
Regime Low Earth[1]
Semi-major axis 6,920 km (4,300 mi)[1]
Eccentricity 0.0006597[1]
Perigee 545 km (339 mi)[1]
Apogee 554.1 km (344.3 mi)[1]
Inclination 43.0°[1]
Period 95.5 minutes[1]
Mean motion 15.079 rev/day[1]
Epoch 2017-06-22 11:32:39 UTC[1]

Hard X-ray Modulation Telescope (HXMT) also known as Insight (Chinese: 慧眼)[3] is a Chinese X-ray space observatory, launched on June 15, 2017[2] to observe black holes, neutron stars, active galactic nuclei and other phenomena based on their X-ray and gamma-ray emissions.[4] It is China's first astronomy satellite.[5] It is based on the JianBing 3 imagery reconnaissance satellite series platform.

The project, a joint collaboration of the Ministry of Science and Technology of China, the Chinese Academy of Sciences, and Tsinghua University, has been under development since 2000.

Payload[edit]

The main scientific instrument is an array of 18 NaI(Tl)/CsI(na) slat-collimated "phoswich" scintillation detectors, collimated to 5.7°×1° overlapping fields of view.[6] The main NaI detectors have an area of 286 cm2 each, and cover the 20—200 keV energy range. Data analysis is planned to be by a direct algebraic method, "direct demodulation",[7] which has shown promise in de-convolving the raw data into images while preserving excellent angular and energy resolution.

The satellite has three payloads, the high energy X-ray Telescope (20-250 keV), the medium energy X-ray telescope (5-30 keV), and the low energy X-ray telescope (1-15 keV)[2]

See also[edit]

References[edit]

  1. ^ a b c d e f g h i j k HXMT (HUIYAN)
  2. ^ a b c d e f g h Rui C. Barbosa (14 June 2017). "China launches X-ray telescope via Long March 4B". NASASpaceFlight.com. Retrieved 15 June 2017. 
  3. ^ "China launches space telescope to search for black holes, pulsars - Xinhua | English.news.cn". news.xinhuanet.com. 
  4. ^ Jones, Andrew (8 September 2016). "Tiangong-2 to launch next week in step towards Chinese space station". gbtimes. Retrieved 9 September 2016. 
  5. ^ SpaceDaily, "China Focus: Timeline for China's space research revealed", Xinhua, 4 September 2012
  6. ^ HXMT.cn, Configuration Archived July 7, 2011, at the Wayback Machine. (Hard X-ray telescope design) c.2004
  7. ^ HXMT.cn, The direct demodulation method Archived July 7, 2011, at the Wayback Machine. (Imaging by direct deconvolution) c.2004