1 / 10

Introduction to MAXI

Introduction to MAXI. Naoki Isobe 1 and MAXI Team 1,2,3,4,5,6 1 RIKEN , 2 JAXA, 3 Osaka Univ., 4 Tokoy Tech. Univ., 5 Aoyama Gakuin Univ. 6 Nihon Uni. MAXI team. Jet. Super massive BH. Black hole. Accretion disk. Companion star. Active galactic nucleus (AGN). Compact objects

weldon
Download Presentation

Introduction to MAXI

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Introduction to MAXI Naoki Isobe1and MAXI Team1,2,3,4,5,6 1RIKEN, 2JAXA, 3Osaka Univ., 4Tokoy Tech. Univ., 5Aoyama Gakuin Univ. 6Nihon Uni. MAXI team

  2. Jet Super massive BH Black hole Accretion disk Companion star Active galactic nucleus (AGN) Compact objects (Black holes, Neutron stars) X-ray Sources • There are various classes of variable X-ray objects in the universe. • Continuous monitor of their X-ray luminosities provides important information on their nature. MAXI is the ideal instrument !!

  3. JEM SSC GSC ISS MAXI Monitor of All sky X-ray Image; MAXI • All-sky X-ray monitor on the Japanese Experimental Module (JEM) of the international space station (ISS). • Launch : 2008 by Space Shuttle. • Mission life : at least 2 years. • Scan of all over the sky in every 96 minutes. • Two kinds of X-ray instruments; Gas Slit Camera (GSC) and Solid-state Slit Camera (SSC)

  4. Zenith field of view Celestial sphere Scan Forward field of view Narrow rectangular field of view on the sky A concept of slit camera X-ray source 1 X-ray source 2 Slit Collimator Position sensitive detector A combination of position sensitive detector, collimator and slit MAXI has two identical field of view, toward forward and zenith direction.

  5. Gas Slit Camera (GSC) A unit of GSC • 3 units for forward and 3 units for zenith direction • Detector : Proportional counter Xe gas (1.4 atm) Carbon anodes (10 mm) Be entrance (100 mm) • Large field of view : 1.5 x 160° • Large Effective area : 5350 cm2 • High Sensitivity : 1 mCrab / day Slit Slit and collimator Be window (A4 paper size) Proportional counter

  6. Solid-state Slit Camera (SSC) A unit of SSC (shown without slit and collimators) • One unit for forward and one unit for zenith direction • Detector : CCD chip • Field of view : 1.5 x 90° • Effective area : 200 cm2 • Good Energy resolution : ～ 150 eV (@ Mn Ka line) ⇒ Map of emission lines CCD chip (Hamamatsu Photonics) 24 mm

  7. Flux [mCab] 1 orbit (96 min) Previous all sky monitors 1 day 1 week Distance [ly] Extragalactic sources (AGNs, Clusters) Targets of MAXI • Dynamic catalog of more than 1000 X-ray sources • Long term monitoring of AGNs • Distribution of distant AGNs, by measuring X-ray backgrounds • Long term monitoring of flaring stars • Alerting X-ray transients • Gamma-ray bursts and their afterglows • etc …

  8. 2 week 1 orbit scan (96 min) 1 day All sky X-ray Image with MAXI

  9. Quick Follow up !! Data flow of MAXI Data relay satellite NASA MSFC ISS 50-70% of data is transferred in real time Alert JAXA Internet MAXI Public Transient

  10. MAXI is an all sky X-ray monitor on the International Space station. MAXI will be launched in 2008, with a mission life of 2 years. MAXI carries two X-ray detectors; GSC (proportional counters) and SSC (CCDs) MAXI has very high sensitivity, to detect more than 1000 X-ray sources, especially AGNs. MAXI alerts X-ray transients almost in real time. We need tight collaborations for quick follow up observation. Please contact me, or the mission leader ; Dr. M. Matsuoka (matsuoka.masaru@jaxa.jp) Summary

More Related