Recent Progress in Astroparticle Physics

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Recent Progress in Astroparticle Physics

• Roger Blandford
• KIPAC
• Thanks to Lukasz Stawarz,
  Paul Simeon

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Progress
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Fermi Launched
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New Facilities
Auger-S
H.E.S.S.
PAMELA
VERITAS
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The Pulsing g-ray Sky

• 50 g-raypulsars
• 2000 radio pulsars
• Radio Quiet
• Millisecond Pulsars
• 40?? Pulsars in 47 Tuc
• Crab pulses detected by MAGIC

• Anatomy of magnetosphere
• Outer gap emission
• Computing magnetosphere
• Pulsars as tools
• Mass-radius relation

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Supernova remnants

• Multi-wavelength studies
• Protons (pions)and electrons (Compton)
• Some shocks are very efficient accelerators gt50
• Magnetic amplification mG-gtmG
• Emission coincident with X-rays, molecular gas
• Hadronic vs leptonic emission debate unresolved

RCW86
Not the Pevatrons?
W51C
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Association with Star Formation
Large Magellanic Cloud
Starburst Galaxies
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Cosmic Ray Source Spectrum

• Much new data
• CREAM, PAMELA, Kaskade Grande, ACE
• GALPROP is great but
• Many complications
• Different sources SNR, PWN, OB stars
• Propagation may not be diffusive
• Limiting speed?
• TeV isotropy gtLR not a power law?
• Local effects -MILAGRO anisotropy
• Need better cross sections!
• However believe C,P symmetry-
• Spatial transport in sources, IPM,ISM,IGM is just
  a function of
• rigidity (momentum per unit charge Larmor
  radius)
• Features in electron spectrum may be seen in M
  nuclei (Seo)
• at same rigidity

Dawn of Precision Cosmic Ray Propagation?
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Shock Modeling

• PIC, Monte Carlo codes
• Conceptual advances
• Magnetic amplification mechanisms
• Only the highest energy particle escape
• promptly
• Magnetic bootstrap?
• Most CRs decompress until
• expansion sub-Alfvenic
• Pulsars, stars more complex!

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Pulsar Wind Nebulae

• Common sources especially at TeV
• Displaced from pulsar
• Synchrotron nebulae
• Compton -CMB/synchrotron
• Accelerating gt10PeV electrons
• Larmor radius 0.1pc
• Cooling length - 0.01pc
• Requires EgtB!!
• Pulsar wind relativistic beaming?
• Pulsar magnetosphere ground-states of gyration

synchrotron
Crab Nebula
Compton
Pevatrons?
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Gamma Ray Bursts

• Three types
• Short -- NS coalescence
• Long Collapse of massive stars
• Magnetars _ 0.3PG neutron stars
• Fermi (Swift)
• 240 GBM
• Broad spectral coverage
• 9 LAT (7 long, 2 short)
• 5 solar mass isotropic energy
• GeV photons -gt G1000
• Late emission (2000s)
• Short bursts also SN??

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Blazars

• Relativistic jets from massive black holes
  pointed towards us
• Blazars BLLacs FSRQ
• Most Fermi sources
• 1000 so far, 5000 eventually, 200 identified
• TeV variation as rapid as 5 min!
• Hadronic vs Leptonic again
• Multi-wavelength science
• Radio monitoring to X-correlate with g-ray
• M87 misdirected GRB
• 6 billion solar mass hole
• Radio emission from 60 grav radii
• Gamma ray flare

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UHECR

• Auger-S completed
• GZK cutoff seen!
• Better spectra
• Composition measurements
• Not photons
• Protons vs iron

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REGRESS
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Dark Matter

• No GeV excess in g-rays
• Background fully
• accounted for by
• astrophysical sources
• ????DAMA????

No 600 GeV electron bump Is a similar feature
seen in cosmic ray spectra?
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Extragalactic Background
Is this all unresolved cosmic sources like AGN?
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UHECR Anisotropy

• Anisotropy still exists but field of cosmic ray
  astronomy not yet created
• Correlations with LSS in general
• Cen A, cluster???
• Clusters?
• 60 events!

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INGRESS
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Dark Matter Sources
Galactic Center

• Galactic center
• Many sources, diffuse background to remove
• WMAP Haze
• Galactic dwarfs
• Where are they
• Should they show up?
• No detections yet
• Clusters
• Primordial cosmic rays, AGN and dark matter
  annihilate upper limits

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VHE Neutrinos

• Ice Cube deployed and working well
• No sources yet
• Leptonic vs hadronic jets
• GZK neutrinos (unless Fe)
• Cosmic ray detector
• Geophysics
• Radio, sonic detection

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Gravitational radiation

• Energy graviton 10-26/-3 TeV!
• LIGO achieved design sensitivity
• S5 run analyzed no detections
• Some useful upper limits
• Enhanced LIGO (2010)
• Advanced LIGO (2014)
• Great progress in computational
• relativity
• Test GR in strong field regime
• First detections likely to be
• NS binaries
• Short GRBs?
• EoS for cold nuclear matter
• LISA

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Neutrino massand number
CMB observations gt Neutrino mass sum lt 0.67
eV Planck working Will need to know H0 cf KATRIN
(0.2 eV) EXO, MAJORANA
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TRANSGRESS
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Radical ideas (not just particle theory)

• Gordy Kane
• Supersymmetric dark matter
• already detected and will be
• seen promptly by LHC
• Eli Waxman
• Dont need additional
• sources to explain PAMELA
• data
• Non dark matter sources
• Young stars?
• g-g pair production
• Positron luminosity density 0.1 g-ray density
• Violation of Lorentz Invariance, Modified Gravity
• Dark matter stars
• 1000Msun

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CONGRESS!
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DIGRESS
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The Illogic of Scientific Discovery