Planck unimi-tomasi
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La missione Planck
Maurizio Tomasi, 11 Aprile 2013L'alba dell'Universo. I primi risultati cosmologici del satellite Planck
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Introduzione
Osservazione del cielo
Lo strumento HFI
Lo strumento LFI
Il telescopio
Raffreddamento
Analisi dati
Storia di Planck
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Introduzione
Osservazione del cielo
Lo strumento HFI
Lo strumento LFI
Il telescopio
Raffreddamento
Analisi dati
Storia di Planck
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Introduzione
Osservazione del cielo
Lo strumento HFI
Lo strumento LFI
Il telescopio
Raffreddamento
Analisi dati
Storia di Planck
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Osservazione del cielo
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Necessità di un telescopio
Osservazione del cielo
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Copertura dell'intero cielo
Osservazione del cielo
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Osservazione del cielo
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Sole TerraL1
L2
L3
LL44
L5
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Introduzione
Osservazione del cielo
Lo strumento HFI
Lo strumento LFI
Il telescopio
Raffreddamento
Analisi dati
Storia di Planck
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Lo strumento HFI
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Lo strumento HFI
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Introduzione
Osservazione del cielo
Lo strumento HFI
Lo strumento LFI
Il telescopio
Raffreddamento
Analisi dati
Storia di Planck
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Introduzione
Osservazione del cielo
Lo strumento HFI
Lo strumento LFI
Il telescopio
Raffreddamento
Analisi dati
Storia di Planck
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Necessità di un telescopio
Il telescopio
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La galassia M81 in un'immagine DSS
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La stessa galassia vista da Planck (857 GHz)
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Risoluzione e spettro
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Risoluzione e spettro
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Risposta angolare
FWHM
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D
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D
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Introduzione
Osservazione del cielo
Lo strumento HFI
Lo strumento LFI
Il telescopio
Raffreddamento
Analisi dati
Storia di Planck
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300 K
140 K
100 K
80 K
50 K
20 K (LFI)
0.1-4 K (HFI)
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Introduzione
Osservazione del cielo
Lo strumento HFI
Lo strumento LFI
Il telescopio
Raffreddamento
Analisi dati
Storia di Planck
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Pulizia dati
Calibrazione
Map-making
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Calibrazione di LFI
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Calibrazione di LFI
Il segnale del dipolo visto da Planck
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Calibrazione di LFI
Ma c'è anche la Galassia!
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Calibrazione di LFI
Non dimentichiamoci della CMB…
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Calibrazione di LFI
Ogni strumento introduce rumore nella misura…
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Calibrazione di LFI
LFI osserva contemporaneamente il cielo e il riferimento
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Calibrazione di LFI
Se si fa la differenza (scalata), parte del rumore scompare
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Calibrazione di LFI
Concentriamoci dunque solo sulla differenza
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Calibrazione di LFI
Questo è uno zoom del primo periodo
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Calibrazione di LFI
Facciamo la media di tutti i periodi: il rumore si riduce!
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Calibrazione di LFI
Calibriamo col dipolo e sottraiamolo: ecco la CMB e la Galassia!
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Pulizia dati
Calibrazione
Map-making
La serie prodotto da un radiometro di LFI è grande quasi 200 GB
Una mappa di Planck è grande meno di 1 GB
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Le mappe di WMAP e Planck sono facili da
confrontare
Le serie temporali invece no!
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Map-making
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Introduzione
Osservazione del cielo
Lo strumento HFI
Lo strumento LFI
Il telescopio
Raffreddamento
Analisi dati
Storia di Planck
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The Planck collaboration
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1992 2013
1992: prima proposta di COBRAS e SAMBA
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1992 20131996
1996: ESA seleziona la missione Planck
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1992 20132000
2000: Thales-Alenia Space riceve l'incaricodi realizzare la sonda
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1992 20132004
2004: Primi test sulle catene radiometrichedi LFI (qualification model)
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1992 20132005
2005: Viene assemblato il qualification model dell'array di radiometri di LFI
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1992 20132006
2006: Viene assemblato il flight model dell'array di radiometri di LFI
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1992 20132007
2007: Planck viene assemblato nei laboratori Thales-Alenia di Cannes (FR)
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1992 20132008
2008: A Liegi (BE) viene verificato il funzionamento degli strumenti integrati nella sonda
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1992 20132009
2009: Il 14 Maggio Planck viene lanciato
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1992 2013
2013: Il 21 Marzo vengono pubblicati i primi risultati cosmologici di Planck