1 / 20

MAXI Status and ISS Science

MAXI Status and ISS Science. August 2 2 , 2003 Max-Planck Inst. Masaru Matsuoka Matsuoka.masaru@nasda.go.jp NASDA(JAXA * from October 1,2003) Tsukuba Space Center. MAXI TMM Overview. * Japan Aerospace Exploration Agency (=ISAS+NASDA+NAL). 358 mm. Monitor of All-sky X-ray Image (MAXI).

aideen
Download Presentation

MAXI Status and ISS Science

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. MAXI Status and ISS Science August 22, 2003 Max-Planck Inst. Masaru Matsuoka Matsuoka.masaru@nasda.go.jp NASDA(JAXA* from October 1,2003) Tsukuba Space Center MAXI TMM Overview * Japan Aerospace Exploration Agency (=ISAS+NASDA+NAL)

  2. 358 mm Monitor of All-sky X-ray Image (MAXI) MAXI GSC GSC SSC - To be placed on the International Space Station in 2008 ? • Energy range is 0.5 – 30 keV for combined CCD camera • and Gas Slit Camera(SSC:200 cm2 ,GSC:5350 cm2)

  3. Now MAXI is in a final phase for FM. GSC: 2-30 keV SSC: 0.5-10 keV Weight: 490 kg MAXI Overview and Scanning Process

  4. MAXI Sensitivity Sensitivity (mCrabs) SSC GSC Systematic error level Dwell Time (seconds)

  5. Appendix A MAXISensitivity MAXI will monitor extra-galactic objects as well as Galactic sources above 1 m Crab. One Orbit (30 sources) O n e D a y ( 1 0 0 s o u r c e s ) O n e W e e k ( 1 0 0 0 s o u r c e s )

  6. X-ray Nova Light Curves and MAXI Detectability X-ray spectra are detectable every day Flux (Crab unit) One Crab = 2.4x10-9 erg sec-1 cm-2 Detectable in one day One m Crab Detectable in one week Time (days after outburst) Tanaka & Shibazaki, Annu. Rev.Astron. Astrophys. 34 (1996), 607

  7. SIMULATION of GSC observations ISS one orbit(90 min)2 months ~ 1000 sources incld. AGN ~30 Galactic sources

  8. MAXI Mission • Dynamics of Galactic and Extra-galactic Objects • Close Binary X-ray sources(Black holes, Neutron stars) • Active Galactic Nuclei(Giant black holes, Cosmic jets) • Creation of Data Base for Variable X-ray Sources • hours, days, months, year since 1960 era! • Large Scale Mapping of Diffuse X-ray Sky • Soft X-ray Sky (Galactic ridge structure with atomic compon’t) • CXB (Distribution of distant active galactic nuclei) Fluctuation detection limit: a few % @ 1.5 deg.2for two years.

  9. A Light Curve of An X-Ray Nova during Rising Phase GS 2000+25 with Ginga-ASM Tsunemi et al . ApJ.L 337 (1989), L81

  10. Long-term X-ray Intensity Variations in Cyg X-2 Power Density Spectrum 1990 era X-ray Light Curves 1980 era 1970 era 1960 era Paul et al. Ap.J. 528 (2000), 410

  11. Galactic OVII & VIII Map with SSC MAXI SSC expected counts: 80- 310 counts in 1.5°x1.5° for 2 yr operation. Obs.eff.=0.7 Galactic Soft X-ray Spectra correspond’g to each Sky Region. Markevitch et al. 2003 ApJ. ROSAT all-sky map of CXB Snowden et al. 1997 ApJ.

  12. AGN Topics • Multiwavelength Simultenous Obs. of ~ 100? AGN’s (Long-term variability of Blazars, Sy etc) • Radio • Opt (MAGNAM etc) • Gamma (GLAST etc) • TeV Gamma (CANGAROO etc) • Connection between BLSy and NLSy and between AGN and BHC • Binary AGNs? • CXB: Fluctuation in All Sky Background < a few % in 1.5x1.5 deg2 < 0.5 mcrab

  13. Multi-wavelength Observations of “Blazar” - Rapid time-variability as short as 1 day :~ 1016 cm(0.01 pc) - Wide-band spectra from radio to TeV g-ray: acceleration up to 1012eV Takahashi et al. 2000, ApJL 542, L105 Successful SSC Model Mrk 421 TeV g Mrk 421 Inverse Compton synchrotron RXTE (8-15keV) ASCA(0.5-7keV) SAX EUVE optical X-ray GeV-g radio TeV-g 1 day

  14. R-band and X-ray correlation of N3516 Smoothed R-band (advanced) sampling inteval ~ 4.3 - 17 d Maoz et al. 2002, AJ 124, 1988

  15. AGN mass estimation from X-ray variability Hayashida et al 1998 ApJ 500 AGN Cyg X-1

  16. AGN mass estimation in comprison with Cyg X-1 (Cyg X-1) Hayashida et al 1998 ApJ 500

  17. MAXI/ISS Schedule and ISS Science • 1992: ISS completion goal in 1982 ? • 2000: ISS completion goal in 1992 ? • 2003: ISS-JEM-MAXI completion goal in 1996 • 2008: present ISS-JEM-MAXI completion goal ? • Payloads for ISS (JEM), an omnibus system =Schedule is changeable. =Science should not become out-of-date. = Resources & attitude system are restricted. • ASM or Monitor astronomy could be one of reasonable sciences? MAXI is delayed and then Lobster-ISS follows complementarily.

  18. Summary ・ Dynamics of Galactic and Extra-galactic Objects: Multi-color Observations. ・ Creation of Data Base for Variable X-ray Sources: Necessity of Continuation of ASM missions. ・ Large Scale Mapping of Diffuse X-ray Sky: Toward better Energy Resolution, Doppler-shift and Absorption etc. ・ MAXI launching time: ready in 2007 with the best ASM sensitivity. But Lobster-ISS will follow complementarily with better sensitivity.

  19. Thank you for your attention.

  20. Appendix B ASCA long-look of Blazars ASCA Light Curve Power Spectra 1 day Mrk421 Mrk501 1 day PKS2155-304 - Every day flares : tvar ~ 105[s] • Steep PSD spectra ( t < tvar) R ~ ctvard~ 1016 [cm] Kataoka et al. ApJ 2001 Tanihata et al. ApJ 2001

More Related