Title: THE NUSTAR MISSION
1THE NUSTAR MISSION
2THE 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)
3THE 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)
4THE 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
5THE CHALLENGE OF FOCUSING HARD X-RAYS
and mainly the precursor of NuSTAR, HEFT
(Harrison05)
6THE CHALLENGE OF FOCUSING HARD X-RAYS
7NUSTAR FACT SHEET
8NUSTAR FACT SHEET
9DEPLOYABLE MAST
THE 10m MAST IS A SCALED DOWN VERSION OF THE 60m
ONE ALREADY USED FOR THE SRTM WHICH FLEW IN 2000
ON ENDEAVOR
10LAUNCH VEHICLE
PEGASUS XL ROCKET LAUNCHED BY AIRCRAFT AT 12000 Km
11SCIENCE
- 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.
12SCIENCE WHICH MAKES ME CURIOUS
13SCIENCE WHICH MAKES ME CURIOUS
14SCIENCE WE HAVE TO DO
DO I HAVE TO SAY IT ? HARD TAILS IN CLUSTERS
FERRARI (2010)
15HARD TAILS IN CLUSTERS
A2256 RELIC SAX PDS FUSCO-FEMIANO 2000
CONTROVERSIAL TO SAY THE LEAST (FF99, RM 04,
FF07 RM 14, FF14 )
16HARD TAILS IN CLUSTERS
- PROBLEMS W/ NON FOCUSING INSTRUMENTS
- SENSITIVITY
- BACKGROUND
- POINT SOURCE CONFUSION
- FOV
17HARD TAILS IN CLUSTERS
ARNAUD (2008)
18HARD TAILS IN CLUSTERS
ARNAUD (2008)
19SOMETHING ELSE ?
- CONTENT OF BUBBLES IN THE ICM (PARTICULARLY IN
LOW T CLUSTERS GROUPS) ?
BLANTON03
20SOMETHING ELSE ?