THE NUSTAR MISSION - PowerPoint PPT Presentation

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THE NUSTAR MISSION

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Title: Slide 1 Author: Fabio Gastaldello Last modified by: Fabio Created Date: 1/12/2005 10:08:20 AM Document presentation format: Presentazione su schermo (4:3) – PowerPoint PPT presentation

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Title: THE NUSTAR MISSION


1
THE NUSTAR MISSION
2
THE CHALLENGE OF FOCUSING HARD X-RAYS
GRAZING INCIDENCE ANGLE
where ?
is density (g/cm3) and E in keV For example
even for Pt (?21 g/cm3) at 30 keV is 0.18
deg, whereas at 5 keV is 1.1 deg A eff
f2 x a2 x R2 Valid for Wolter I optics, where f
focal length and R reflectivity (de Korte 1988)
3
THE CHALLENGE OF FOCUSING HARD X-RAYS
Multi-layers grazing incidence Bragg
reflection N layers of heavy element/ light
elements (high/low refractive index as W/Si or
Pt/C) with spacing d which is a function of
depth (e.g, Christensen et al. 1991)
4
THE CHALLENGE OF FOCUSING HARD X-RAYS
Balloon-borne hard X-ray focusing telescope have
already flown (InFOCuS in Japan
HERO, Ramsey02,
Cyg-X1, 20-45 keV
5
THE CHALLENGE OF FOCUSING HARD X-RAYS
and mainly the precursor of NuSTAR, HEFT
(Harrison05)
6
THE CHALLENGE OF FOCUSING HARD X-RAYS
7
NUSTAR FACT SHEET
8
NUSTAR FACT SHEET
9
DEPLOYABLE MAST
THE 10m MAST IS A SCALED DOWN VERSION OF THE 60m
ONE ALREADY USED FOR THE SRTM WHICH FLEW IN 2000
ON ENDEAVOR
10
LAUNCH VEHICLE
PEGASUS XL ROCKET LAUNCHED BY AIRCRAFT AT 12000 Km
11
SCIENCE
  • BY FLYING FIRST IT WILL OPEN THE DISCOVERY SPACE
    IN THE FOCUSING HARD X-RAY FIELD
  • BLACK HOLE PHYSICS AND CENSUS, BY BEGINNING TO
    RESOLVE A CONSISTENT FRACTION OF OBSCURED AGN AT
    THE PEAK OF THE CXB
  • ACCELERATION MECHANISMS IN SN REMNANT, BLAZARS,
    PWN, ETC.

12
SCIENCE WHICH MAKES ME CURIOUS
13
SCIENCE WHICH MAKES ME CURIOUS
14
SCIENCE WE HAVE TO DO
DO I HAVE TO SAY IT ? HARD TAILS IN CLUSTERS
FERRARI (2010)
15
HARD TAILS IN CLUSTERS
A2256 RELIC SAX PDS FUSCO-FEMIANO 2000
CONTROVERSIAL TO SAY THE LEAST (FF99, RM 04,
FF07 RM 14, FF14 )
16
HARD TAILS IN CLUSTERS
  • PROBLEMS W/ NON FOCUSING INSTRUMENTS
  • SENSITIVITY
  • BACKGROUND
  • POINT SOURCE CONFUSION
  • FOV

17
HARD TAILS IN CLUSTERS
ARNAUD (2008)
18
HARD TAILS IN CLUSTERS
ARNAUD (2008)
19
SOMETHING ELSE ?
  • CONTENT OF BUBBLES IN THE ICM (PARTICULARLY IN
    LOW T CLUSTERS GROUPS) ?

BLANTON03
20
SOMETHING ELSE ?
  • SHOCKS ?
  • FE ABUNDANCE ?
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