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Найдено 31 документов по запросу «NHXM». [Перейти к поиску]


Дата загрузки: 2017-02-23
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... in Binary Systems - A new proposal NHXM A summary of facts • In Italy...” option of HEXIT-SAT (renamed NHXM) by performing a parallel phase A study...-X is studying a mission based on NHXM but also dedicating a telescope to... Systems - Ferrara September 12 2009 NHXM NHXM is based on 4 telescopes (60... Systems - Ferrara September 12 2009 NHXM vs POLARIX: area 20 inner... some extra-shell is studied NHXM vs POLARIX: angular resolution The... use in the focus of NHXM the same detector already used... can be partially matched with NHXM targets because the same physics... for some important targets of NHXM imaging/spectroscopy: e.g. obscured objects (galactic... problem Two days observation with NHXM (not much different for POLARIX...



Дата загрузки: 2016-11-23
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... kinematics. 7732-42, Session 10 NHXM: a New Hard X-ray Imaging and... Italian New Hard X-ray Mission (NHXM) has been designed to provide... plasmas and strong gravitational fields. NHXM is an evolution of the... ensure a low and stable background, NHXM will be place placed in...) The New Hard X-ray Mission (NHXM) Italian project will be operated.... 7732-44, Session 10 The NHXM spectral-imaging cameras O. Catalano, INAF...) The New Hard X-ray Mission (NHXM) is conceived to extend the... energy of 80 keV. The NHXM payload consists of four telescopes... to the optimization of the NHXM optical modules, requiring only the... DEPFET readout circuit for the NHXM Mission L. Bombelli, C. E. Fiorini, Politecnico di... a monolithic array of DEPFET detector. NHXM, under study by ASI (Agenzia... m. The challenging requirements of the NHXM cameras regard the necessity to... 10 keV ) of the new NHXM telescopes. In order to fully... the New Hard X-ray Mission (NHXM): design concept Fabrication and characterisation...) The new hard X-ray mission (NHXM) is conceived to extend the... energy of 80 keV. The NHXM payload consists of four telescopes... the New Hard X-ray Mission (NHXM) Italian project that will be...



Дата загрузки: 2016-12-09
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..., 360 c SAIt 2012 Memorie della NHXM: a New soft and Hard X-ray... G. Tagliaferri, on behalf of the NHXM consortium Istituto Nazionale di Astrofisica.... The New Hard X-ray Mission (NHXM) brings together for the first... and polarimetry. With this capability, NHXM will perform groundbreaking science in... we have designed a new mission, NHXM. We will now briefly outline... of the mission. Tagliaferri: The NHXM Observatory Fig. 1. An artistic view of the NHXM observatory. The four mirror modules... field geometry. 3. The mission profile NHXM is designed specifically to address...) imaging polarimetry. 362 Tagliaferri: The NHXM Observatory Fig. 2. HEW as a function... for an engineering model of NHXM measured at the Panter Xray calibration facility. In addition, NHXM has the ability to locate..., permitting their detailed study. The NHXM payload subsystems are based on... mirror modules: the four identical NHXM Mirror Modules will be based... 150 µm, i.e. fully de- Tagliaferri: The NHXM Observatory Fig. 4. The polarimetric focal... at the focus of one NHXM telescope, by a sliding (or rotating... cylinder and coaligned with the NHXM pointing direction. This design is... eV FWHM. 4. The mission configuration NHXM will operate in a circular, low... with good pointing capability. The NHXM satellite has been designed to... a mission lifetime of 3 (+2, goal) years. NHXM will be operated as a X-ray... fibre reinforced 364 Tagliaferri: The NHXM Observatory polymer (Fig. 1). After injection... a postfacto image reconstruction. 5. Conclusions The NHXM brings together for the first... polarimetry. With these capabilities the NHXM will perform groundbreaking science in.... To address these scientific goals NHXM will have broad band (0.5-80... to becrepointed within 1-2 hrs. The NHXM satellite has been proposed to...



Дата загрузки: 2016-12-09
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NHXM: a New Hard X-ray Imaging and Polarimetric Mission Sergio Campana & Gianpiero Tagliaferri INAF - Osservatorio Astronomico di Brera New
Hard
X‐ray
Mission
main features • Single satellite with extendable bench (NO Formation Flight!) o Four high quality (XMM-like) mirrors with multilayer coatings (0.2-80 keV) o Three Telescope Modules dedicated to broad band imaging & spectroscopy o One telescope Module dedicated to imaging polarimetry (2-35 keV)  extendable up to 80 keV with a scattering polarimeter o LEO (equatorial)  low internal background 2 Mission
Configura8on Service
module
(PRIMA
Science
pla7orm) Focal
plane

module 3 Key
parameters
of
future
hard X‐ray
missions # of Telescopes Energy band (keV) NHXM NuSTAR Astro-H 3+1 2 2+2 0.2 ÷ 80 7 ÷ 80 0.5 ÷ 80 Effective area at 30 keV 350 300 320 (cm2) at 5 keV >1000 0 500 Low Equatorial Low Equatorial Low Equatorial Orbit, inclination Focal Length <5˚ ~6˚ ~30˚ 10 10.14 12 Field of View diameter (arcmin) 12 12 9 Half Power Diameter (arcsec at 30 keV) 20 45-60 >100 (meters) 10-40 keV flux sensitivity at confusion limit (erg cm-2 s-1) Sources per field 3 10 40 -15 2 10 6 -14 4 10 1 -14 4 Key
parameters
of
future polarimteric
missions NHXM GEMS # of Telescopes 1 3 Energy band 2 ÷ 35 2 ÷ 10 (keV) (2-10 + 6-35) (+0.5 keV) Field of View diameter (arcmin) 12 12 Half Power Diameter (arcsec at 30 keV) 20 Non imaging MDP (1 mCrab, 100 ks 10% 2-10 keV band) 5% Rotation Not needed Yes (0.1 rpm) MDP (systematics) << 1% Unknown Background 0.13 Crab (2-10 keV) 0.4 Crab (6-35 keV) 0.2 mCrab 5 Flux
Sensi8vity
(I) 6 Flux
sensi8vity 7 Polarimetric
sensi8vity So?
X‐ray
channel Two
polarimetric
channels
(2
–
10
keV and
10
–
35
keV)
for
an
effecPve diagnosPc
of
the
emission
mechanisms Hard
X‐ray
channel Cross
correlaPon
with

the
spectroscopy data
between
2
and
36
keV! 8 NHXM:
Core
scienPfic
objecPves • Black hole physics and census - resolve at least 50-60% of the CXB in the energy range where it peaks (20-30 keV) - solve the puzzle on the origin of the hard X–ray emission from the Galactic centre - constrain the physics of the accretion flow onto both SMBH and solar mass BH • Particle acceleration mechanisms - constrain acceleration processes in relativistic jets of blazars and GRB - measure the maximum energy of electron acceleration in supernova remnants shocks - probe acceleration mechanisms in the strong EM and gravitational fields of pulsars CXB
frac8on
&
Compton
Thick
AGN NHXM NuStar Astro-H 20-40keV Gilli et al. 2007 Gilli et al. . Treister et al. 2-10 keV Chandra/XMM • • • Strong evidences for missing SMBH Complete SMBH census needed, including Compton Thick AGN Obscured AGN: probe of early galaxy evolution phases, when feedback must be in action Accelera8on
mechanisms • Jet
emission
is
due
to
both
synchrotron and
Inverse
Compton,
both
components are
strongly
polarized. • Therefore,
mulP‐band
(IR,
Opt.,
X‐ray) spectroscopy
and
polarimetry
can
probe – jet
structure – nature
of
jet
seed
photons – jet
power The Galactic Centre X‐ray
Polarimetry
with
imaging capabili8es The
possibility
to
associate
to
the
polarimetric sensiPvity
also
an
imaging
capability
is
of paramount
importance
in
the
case
of
extended sources
invesPgaPon,
like
e.g.
the
SN
remnants and
the
GalacPc
Centre
region. 13 EM3: optics calibration @ Panter/MPE 1 keV 40 keV Panter measurements of EM1, EM2 & EM3 HEW EM1 EM2 Effective Area Summary • The
discovery
space
of
the
NHXM
mission
is
extremely
wide;
also
thanks
to
the addiPon
of
simultaneous
imaging
polarimetry. • This
is
achievable
by
the
small/medium‐size
NHXM
project,
exploiPng
already available
technology
in
mirror
and
detector
manufacturing,
well
within
the
next decade.
The
mission
could
be
ready
for
a
launch

in
2016‐17. • All
technologies
have
old
and
strong
roots,
building
up
on
the
BeppoSAX, INTEGRAL
&
XMM‐Newton
heritage
and
on
the
recent
technological
advance made
for
the
mirrors,
polarimeter,
detectors
and
truss. • Strong
interest
has
been
expressed
also
by
other
InternaPonal
InsPtutes. • NHXM
is
a
big
step
forward
following
on
the
hard
X‐ray
focusing
missions NUSTAR
and
ASTRO‐H
and
on
the
polarimetric
GEMS
mission.
NHXM

will
also be
a
good
precursor
for
IXO,
tesPng
various
technologies
that
are
foreseen
on
a much
larger
scale
for
IXO. • IniPal
stages
of
the
mission
(phase
B)
are
now
supported
by
an
ASI
constract. We
plan
to
submit
a
NHXM
proposal
to
the
ESA
call
soon
to
be
issued. 16



Дата загрузки: 2017-01-10
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... as key requirement . . . . . . . . . . . . . . . . . . . 4 1.4 Simbol-X and NHXM as case studies . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.5 A cook book... and discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 2.10 The NHXM view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 3 The space radiation... 4.4.3 MSC passive shielding mass . . . . . . . . . . . . . . . . . . . . . . . . . . . 79 4.5 NHXM passive shielding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80 4.6 Shielding analytical... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107 6.1.3 DSC background results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112 NHXM background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116 6.2.1 Background results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117... area. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.2 3 Artist view of the NHXM satellite in space, from Tagliaferri.... Picture from the INAF/OAB NHXM webpage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1 7 Chandra/ACIS (left panel... respectively. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 2.10 The expected NHXM background used as input for...). The latter refers to the NHXM orbit. . . . . . . . . . . . . . . . . . . . . . 4.1 62 The dependence of... environment in LEO for the NHXM orbit. . . . . . . 128 7.2 The box Geant4... xiv List of Tables 1.1 Main NHXM top level scientific requirements. . . . . . . . . . . . . . . . . . . . . . 2.1 Description... orbit of the Simbol-X and NHXM missions. . . . . . 3.2 27 Comparison of the... by Suzaku and expected for NHXM. . . . . . . . . . . . . . . . . . . . . . . . . . . 3.1 22 The spectral properties from... budget of the NHXM preliminary shielding design. . . . . . 117 6.6 The NHXM LED and... configuration. Altough the Simbol-X and NHXM missions are the case studies... recent New Hard X–ray Mission (NHXM, Tagliaferri et al. (2010)) proposed... resolution (< 20 arcsec HEW for NHXM) grazing incidence mirrors, with a 10... contribution is higher. 1.4 Simbol-X and NHXM as case studies The Simbol..., the New Hard X-ray Mission (NHXM) is a hard X-ray mission (Tagliaferri... top scientific requirements of the NHXM X-ray imaging spectrometers, as defined... Figure 1.2: Artist view of the NHXM satellite in space, from Tagliaferri... HED (AC on) Table 1.1: Main NHXM top level scientific requirements. The... requirement is satisfied, the NHXM 6 1.4. Simbol-X and NHXM as case studies sensitivity... a more detailed analysis. 2.10 The NHXM view A simulation of the 0.5 - 80... significancy, clearly visible in the NHXM simulated spectra, allowing to better.... 32 2.10. The NHXM view The outstanding NHXM spectrum quality is however... orbital parameters of Simbol-X and NHXM, compared to a selection of operative....5 Simbol-X HEO / 20000 180000 40 NHXM LEO 550 / / <5 Table 3.1: Orbital parameters... only difference between Simbol-X and NHXM orbits is the Earth’s shielding... energy differential flux for the NHXM background evaluation is based on... to normalize for the lower NHXM inclination: CR = Rc (λm = 23◦ ) 4.5 GV... geomagnetic equator (red line). expected NHXM albedo neutron flux from the... (Simbol-X) or the extendable bench (NHXM), avoids the possibility of using... background simulation of Simbol-X and NHXM a plastic scintillator is used. However... of the baseline Simbol-X and NHXM instruments (the inscribed circle). 4.3.1 No... positions and dimensions. In the NHXM passive shielding study, we compute... in Table 4.9. In Figure 4.7 the NHXM Baseline Design Parameter Description LED... m 1.59 m 1.16 m 1.37 m Table 4.10: NHXM sky screen diameter for a perfect... results regarding the Simbol-X and NHXM background evaluation are presented. In... approach is assumed for the NHXM background simulation. The CXB induced... configuration is explored in Chapter 7. 6.2 NHXM background For the preliminary evaluation of the NHXM background level, a simplified Geant4 mass... reason is probably the simplified NHXM geometry, which does not include...) mode. Particle CXB Proton Total NHXM background level Energy Detector AC... [cts s−1 ] 0.8 239.7 240.5 Table 6.6: The NHXM LED and HED energy averaged..., by means 119 6. Background evaluation NHXM shielding efficiency LED HED Volume... order to achieve the outstanding NHXM sensitivity, the required maximum total... in general agreement with the NHXM maximum allowed background level, if... an accurate shielding optmization, the NHXM top level scientific requirements can... shielding solutions. Altough the Simbol-X, NHXM and IXO missions have been... budget for the Simbol-X and NHXM missions, accounting for a possible lateral... sky screen diameter ranges from 1.2 m (NHXM) to more than 2 m (Simbol-X), and... important results comes from the NHXM proton induced background level, where... active shield. The Simbol-X and NHXM background evaluation has been included...



Дата загрузки: 2017-01-10
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... dello studio di fase A di NHXM/HexitSat PRIMO Attiná ASDC-ESRIN 12-13 Novembre 2009 NHXM/HexitSat New Hard X-ray Mission... – Fase A (Formation Flight ed HexitSat)”  NHXM phase A consisted in the study... 0.5-80 keV X-ray band.  The NHXM innovative optics implies a focal length... reserved © 2007, Thales Alenia Space NHXM/HexitSat New Hard X-ray Mission... concept were the references of NHXM phase A. Simbol-X ASI/CNES mission... the basic reference of the NHXM phase A, in which a lot of... the orbit acquisition in orbit. NHXM Phase A study demonstrates the feasibility... NHXM/HexitSat NHXM/HexitSat Legacy HexitSat was the original concept for the NHXM...-Mi & MLT) 2005/2006 - ASI NHXM Pre-fase A study, (TAS prime... reserved © 2007, Thales Alenia Space NHXM/HexitSat Simbol-X versus HexitSat (an... ed IXO X-ray missions). The NHXM Phase A study demonstrated the HexitSat... reserved © 2007, Thales Alenia Space NHXM/HexitSat 6 12-13 Nov. 2009... © 2007, Thales Alenia Space NHXM/HexitSat NHXM/HexitSAT Overview Vega Extended Detector..., Thales Alenia Space NHXM/HexitSat The Service Platform The NHXM phase A study... of 2300 kg (while improved-NHXM mass is 1500 kg) 8 12... reserved © 2007, Thales Alenia Space NHXM/HexitSat The extended X-ray telescope main features During the NHXM phase A study a tradeoff considering several... reserved © 2007, Thales Alenia Space NHXM/HexitSat The Detector Platform The... reserved © 2007, Thales Alenia Space NHXM/HexitSat The Service Metrology & Image... reserved © 2007, Thales Alenia Space NHXM/HexitSat Reference for thermal control... reserved © 2007, Thales Alenia Space NHXM/HexitSat Attitude and orbit control... Alenia Space NHXM/HexitSat Launcher An important output of NHXM Phase-A study...  Indian PSLV In the improved-NHXM case the estimated launch mass... Space NHXM/HexitSat Ground Segment (GSN, MOC, SOC) The HexitSat/NHXM flight... reserved © 2007, Thales Alenia Space NHXM/HexitSat The master planning th... 2 04 st 1 Year 01 02 NHXM/HEXITSAT Master Schedule HexitSat Phase... of 2016 are:  Utilization of NHXM phase A study and of the... Alenia Space NHXM/HexitSat The satellite model philosophy The NHXM/HexitSat Phase... reserved © 2007, Thales Alenia Space NHXM/HexitSat The mirror and detector... reserved © 2007, Thales Alenia Space NHXM/HexitSat Technological Drivers to be... studying this aspect. From the NHXM phase A study and from this... develop the detectors foreseen for NHXM in agreement with the schedule... performed by TAS-I in the NHXM Phase A study, were an off... reserved © 2007, Thales Alenia Space NHXM/HexitSat 20 12-13 Nov...



Дата загрузки: 2017-01-04
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... X-ray polarimeters on-board the NHXM mission a INAF/IASF Rome Via... X-ray imaging and polarimetric Mission (NHXM) makes a synergic use of broad... describe the polarimeters on-board NHXM. Two Gas Pixel Detectors, filled...-board the NHXM mission Fabio Muleri 1. Introduction 2. Polarimetry with NHXM The New... X-ray imaging and polarimetric Mission (NHXM) is a mission which was presented...” recently issued by ESA [11]. NHXM is dedicated to study cosmic... the four identical telescopes of NHXM are devoted to imaging and... X-ray polarimeters on-board the NHXM mission Fabio Muleri Energy range...-board NHXM. the whole mission (see Figure 1). The payload of NHXM include... characteristics of polarimeters on-board NHXM are reported in the Table 1. 3. Scientific objectives NHXM will be an ideal observatory... of matter in extreme conditions. NHXM will make available contemporaneously and.... Some of the field where NHXM will provide breakthrough results are... X-ray polarimeters on-board the NHXM mission Fabio Muleri (b) Figure 2: (a) Minimum... (right) [13]. Superimposed is the NHXM MEP point spread function. The... nebula should be differently polarized. NHXM will be able to resolve... X-ray polarimeters on-board the NHXM mission Fabio Muleri References [1] M. C. Weisskopf... A∗ [14, 15, 16, 17, 18]. NHXM will unambiguously prove or disprove... and the low background of NHXM are essential to distinguish in... [20]. The unique contribution of NHXM with respect to other missions... also in this case the NHXM contribution will be unique since... well within the possibilities of NHXM with a few days observations, at...]. The broad band capability of NHXM will allow for an excellent... X-ray polarimeters on-board the NHXM mission Fabio Muleri [2] A. J. Dean, D. J. Clark..., G. Pareschi, G. Perola, S. Romaine, and G. Villa. NHXM: a New Hard X-ray imaging and... X-ray polarimeters on-board the NHXM mission Fabio Muleri [13] J. A. M. Bleeker...



Дата загрузки: 2017-01-10
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... Tagliaferri,b on behalf of the NHXM consortium a INAF-IASF_Palermo Via Ugo...@ifc.inaf.it b INAF-OABr NHXM is a new hard X-ray imaging... permit to detect transient phenomena. NHXM will provide a real breakthrough on... of matter under extreme conditions. A NHXM proposal has been submitted to... 2010)033 NHXM: a New Hard X-ray Imaging and Polarimetric Mission NHXM: a New... the New Hard X-ray Mission (NHXM) that will achieve for the... in the 2-35 keV band. NHXM will host four identical telescopes... narrow fields intruments within 1 hr. NHXM will provide significant improvements on.... The physics behind the formation NHXM: a New Hard X-ray Imaging and... to measure the BH spin. A NHXM proposal has been submitted to... http://www.brera.inaf.it/NHXM/supportingteam/ ). 2. The scientific payload configuration... most relevant scientific requirements of NHXM are listed in Table 1; while below we briefly describe the NHXM payload. 2.1 The mirror modules The...(INTEGRAL 2010)033 Figure 1: The NHXM satellite in its current configuration... direct exposure to space environment. NHXM: a New Hard X-ray Imaging and... G. Cusumano Table 1: some of the NHXM top-level scientific requirements. Parameter... the quality requested by the NHXM [1, 2] . In the baseline configuration each...) up to 50 keV. In NHXM: a New Hard X-ray Imaging and... X-ray monitor that operates successfully 5 NHXM: a New Hard X-ray Imaging and... Mission G. Cusumano 3. Conclusions The proposed NHXM mission is based on a novel... and polarimetry. With this capability, NHXM will perform groundbreaking science in...., The optic system of the NHXM mission: design and development, SPIE... the New Hard X-ray Mission (NHXM): design concept, SPIE 7732, E116... cylinder and coaligned with the NHXM pointing direction. The addition of...



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... X-ray imaging telescopes (NuSTAR, ASTRO-H, NHXM, IXO) beyond 10 keV, that... and the grasp of the NHXM optical modules, requiring only the... reflectivity computation. Keywords: X-ray telescopes, NHXM, effective area, off-axis, grasp... by an extendible truss (like NHXM and IXO), which is not... this analytical approach to the NHXM optical modules. In Sect. 2 we... applications to the case of NHXM. The results are summarized in...-AXIS EFFECTIVE AREA OF THE NHXM MODULES In this section we... area of the NHXM hard X-ray telescope[2]. The NHXM optical system, as... configuration as a baseline for the NHXM optical modules. However, before adding... effective area of a module of NHXM, which can be calculated as... Eq. 6, for a single module of NHXM, with optimized Pt/C multilayer recipes... of a single module of the NHXM telescope, as a function of the... 6 arcmin, the radius of the NHXM field of view, and that... Eq. 9, for a single module of NHXM, with optimized Pt/C multilayer recipes...



Дата загрузки: 2016-12-09
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Abstract The NHXM (New Hard X-ray Mission) observatory ... different inorganic scintillators crystals. Table 1: NHXM scientific requirements Introduction Parameter Value...) The New Hard X-ray Mission (NHXM) is a medium size mission, submitted..., or relativistically boosted blazars). The NHXM is qualified to provide a real..., the main scientific objectives of NHXM are based on: i) censing the...