Variable Galactic Gamma-ray Sources - Fermi Gamma-ray Space Telescope
Variable galactic γ-ray sources Guillaume Dubus with many thanks to Fermi/LAT collaboration Fermi Symposium 2011, Rome Institut de Planétologie et d’Astrophysique de Grenoble
Variable galactic γ-ray sources [pulsars] gamma-ray binaries: spectrum of LS sources, lightcurve of PSR B1259-63 unidentified transients in the Galactic Plane microquasars: Cygnus X-3 flares novae: Symbiotic V407 Cyg colliding wind binaries: eta Carina ?
Gamma-ray binaries interacting massive star compact object dominant gamma-ray emission likely pulsar winds in binaries LS I 61o303 spectral energy distribution (Zdziarski et al. 2009)
Gamma-ray binaries PSR B1259-63 LS 5039 LS I 61 303 HESS J0632 057 PSR J1023 0038 detection at periastron GeV modulation, spectrum, variability A. Abdo D. Hadasch 1FGL J1018.6-5856 new γ-ray binary R. Corbet X-ray, TeV modulation found no GeV reported Bongiorno et al. 2011 Acciari et al. 2011
Gamma-ray binaries PSR B1259-63 LS 5039 LS I 61 303 HESS J0632 057 PSR J1023 0038 detection at periastron GeV modulation, spectrum, variability A. Abdo D. Hadasch Bongiorno et al. 2011 Acciari et al. 2011 PSR J1023 0038 ? 1FGL J1018.6-5856 X-ray, TeV modulation found no GeV reported XSS J12270-4859 ? new γ-ray binary R. Corbet Tam et al. 2010 low mass γ-ray binaries ? Hill et al. 2011
Gamma-ray binaries PSR B1259-63 LS 5039 LS I 61 303 HESS J0632 057 PSR J1023 0038 detection at periastron GeV modulation, spectrum, variability A. Abdo D. Hadasch X-ray, TeV modulation found no GeV reported Bongiorno et al. 2011 Acciari et al. 2011 1FGL J1018.6-5856 new γ-ray binary R. Corbet key: orbital modulations
Orbital modulations Anisotropic inverse Compton on star photons Pair production on star photons sup conj inf conj to observer inf conj sup conj inf conj boost sup conj Doppler boost [if bulk relativistic motion] inverse Compton inverse Compton pair production identify emission mechanism distinguish variability in phys. conditions from var. due to observer geometry
LS o I 61 303 D. Hadasch 0.7 au to observer 26 d LS I 61 303 (Abdo et al. 2009) modulations suggest inverse Compton
LS o I 61 303 D. Hadasch 0.7 au to observer HE peak offset from IC expectations HE modulation absent recently VHE peak phase varies 26 d LS I 61 303 (Abdo et al. 2009) modulations suggest inverse Compton
LS o I 61 303 D. Hadasch modulations suggest inverse Compton LS I 61 303 (Abdo et al. 2009) spectrum suggests two populations of HE particles
LS o I 61 303 D. Hadasch modulations suggest inverse Compton LS I 61 303 (Abdo et al. 2009) spectrum suggests two populations of HE particles pulsar magnetospheric pulsar wind emission nebula (but modulation, variability ?)
LS o I 61 303 D. Hadasch modulations suggest inverse Compton LS I 61 303 (Abdo et al. 2009) spectrum suggests two populations of HE particles pulsar magnetospheric pulsar wind emission ? nebula striped pulsar wind emission ? Fig: Kirk et al. (Pétri & GD 2011)
PSR B1259-63 Fermi/LAT lightcurve (Abdo et al. 2011) A. Abdo orbit close to periastron 1036 erg/s spindown pulsar in 3.5 year orbit around Be star Fermi/LAT detection at periastron mid-December 2010
PSR B1259-63 Fermi/LAT lightcurve (Abdo et al. 2011) A. Abdo orbit close to periastron 1036 erg/s spindown pulsar in 3.5 year orbit around Be star Fermi/LAT detection at periastron mid-December 2010 brighter in February (near inf. conjunction)
PSR B1259-63 Fermi/LAT lightcurve (Abdo et al. 2011) A. Abdo IC striped pulsar wind (Pétri & GD 2011) inv. Compton on Be star photons works only near periastron
PSR B1259-63 Fermi/LAT lightcurve (Abdo et al. 2011) A. Abdo IC striped pulsar wind (Pétri & GD 2011) inv. Compton on Be star photons works only near periastron – Be disk (π0, free-free.) ? HE sync ? Doppler boost ? IC on other fields ?. Nearly all spindown power radiated away in γ-rays at peak
Transients in the Galactic Plane Fermi/LAT all-sky survey mode. Automated search runs every 6 hours, 1 day, 1 week. weekly report http://fermisky.blogspot.com list of binaries specifically monitored poster Glanzman & Dubois Fermi/LAT 1 day
date l J0903-3531 10/2008 J0910-5041 b err note 259.59 7.7 0.08 AGN ? 10/2008 271.62 -1.8 0.07 AGN ? J0109 6134 02/2010 125.12 -1.23 0.09 AGN J1018-5856 03/2011 284.32 -1.70 0.02 gamma-ray binary Cyg X-3 05/2010, 03/2011 79.85 0.79 - microquasar V407 Cyg 03/2010 86.96 -0.55 0.12 nova Crab 09/2010, 04/2011 184.43 -5.79 0.06 Crab flare PSR B1259-63 12/2010, 01/2011 304.18 -0.99 J1057-6027 06/2009 289.3 -0.64 0.07 GC region 02/2011 0.09 -0.23 0.36 20s J0109 6134 02/2010 125.18 -1.21 0.6 AGN J1037-5708 10/2010 285.5 1.1 0.5 J2206 6203 01/2010 104.9 5.1 0.4 J1410-6147 02/2008 312.2 -0.3 0.5 J2206 6203 01/2010 104.9 5.1 0.4 PSR B1259-63 ? 08/2010 304.7 -0.8 0.6 Cygnus region 11/2007 75.0 -0.4 1 J2022 4032 04-05-06-10/2008 78.2 2.1 0.5 ? PSR J2021 4026. Chen et al. 2011 Cyg X-1 ? 10/2009, 03./2010 70.3 2.5 1.2 no Fermi. Sabatini et al. 2010 Cyg X-3 11/2008, 05/2010, 02-03/2011 79.85 0.79 - microquasar Crab 09/2010, 04/2011 184.6 -6.0 0.4 Crab flare gamma-ray binary no Fermi at that time AGILE Atel source Fermi/LAT Variable galactic γ-ray sources ATels
date l J0903-3531 10/2008 J0910-5041 b err note 259.59 7.7 0.08 AGN ? 10/2008 271.62 -1.8 0.07 AGN ? J0109 6134 02/2010 125.12 -1.23 0.09 AGN J1018-5856 03/2011 284.32 -1.70 0.02 gamma-ray binary Cyg X-3 05/2010, 03/2011 79.85 0.79 - microquasar V407 Cyg 03/2010 86.96 -0.55 0.12 nova Crab 09/2010, 04/2011 184.43 -5.79 0.06 Crab flare PSR B1259-63 12/2010, 01/2011 304.18 -0.99 J1057-6027 06/2009 289.3 -0.64 0.07 GC region 02/2011 0.09 -0.23 0.36 20s J0109 6134 02/2010 125.18 -1.21 0.6 AGN J1037-5708 10/2010 285.5 1.1 0.5 J2206 6203 01/2010 104.9 5.1 0.4 J1410-6147 02/2008 312.2 -0.3 0.5 J2206 6203 01/2010 104.9 5.1 0.4 PSR B1259-63 ? 08/2010 304.7 -0.8 0.6 Cygnus region 11/2007 75.0 -0.4 1 J2022 4032 04-05-06-10/2008 78.2 2.1 0.5 ? PSR J2021 4026. Chen et al. 2011 Cyg X-1 ? 10/2009, 03./2010 70.3 2.5 1.2 no Fermi. Sabatini et al. 2010 Cyg X-3 11/2008, 05/2010, 02-03/2011 79.85 0.79 - microquasar Crab 09/2010, 04/2011 184.6 -6.0 0.4 Crab flare gamma-ray binary no Fermi at that time AGILE Atel source Fermi/LAT Variable galactic γ-ray sources ATels
Cygnus X-3 flares AGILE & Fermi/LAT detections Tavani et al. 2009, Abdo et al. 2009, Williams et al. 2011, ATels Swift/BAT 15-50 keV poster Piano for AGILE
Cygnus X-3 flares AGILE & Fermi/LAT detections Tavani et al. 2009, Abdo et al. 2009, Williams et al. 2011, ATels Swift/BAT 15-50 keV Fermi Abdo et al. 2009 AGILE AGILE
HE γ-rays from a microquasar Relations between X-rays, radio, γ-ray Link between non-thermal proc. and jet formation ? Only confirmed detection from a microquasar adapted from Szostek et al. 2008 Radio jet Cyg X-3 (Martí et al. 2001) radio γ-rays 10% X-rays
γ-ray and X-ray modulation X-ray modulation from Thomson scattering in Wolf-Rayet wind Abdo et al. 2009 X-ray max inf. conj. γ-ray min X-rays X-ray min sup. conj. γ-ray max γ-ray modulation due to inv. Compton on Wolf-Rayet photons ?
γ-ray and X-ray modulation GD et al. 2010, Cerutti et al. 2011 γ-ray modulation due to inv. Compton on Wolf-Rayet photons X-ray max inf. conj. γ-ray min X-ray min sup. conj. γ-ray max not too close, not too far : recollimation shock ? matter, radiation density : is Cyg X-3 unique ? X-rays
Gamma-rays from a nova optical nova outburst discovered by amateur astronomers Nishiyama & Kabashima poster T. Cheung
Gamma-rays from a nova poster T. Cheung thermonuclear runaway WD ejects 10-6 M at 3000 km/s Mini-supernova, 1044 erg, π0 from high energy p or IC on e one every few years ? (Yungelson et al. 1995) Walder, Folini & Shore 2008 Abdo et al. 2010 symbiotic system: lots of matter & radiation
Summary Identified variable galactic γ-ray sources tend to be binaries gamma-ray binaries spectrum of LS sources, lightcurve of PSR B1259-63 challenge models variability gives new insights into pulsar winds microquasars Cyg X-3 could be unique object to link jet formation with non-thermal processes symbiotic novae particle acceleration in a mini supernova colliding wind binaries tbc unidentified transients in the Galactic Plane more fun to come !
Colliding wind binaries Gamma-ray emission from Eta Carinae ? Large kinetic energy in winds 1037 erg/s, 5.5 yr orbit AGILE flare near periastron but no variability in Fermi/LAT η Car 10’x10’ Tr 16 Abdo et al. 2010 Fermi/LAT spectrum : pulsar wind nebula in Tr 16 cluster ? No conclusive evidence for colliding wind binaries yet.
γ-ray modulation due to inv. Compton on Wolf-Rayet photons γ-ray and X-ray modulation X-ray max inf. conj. 2011 γ-ray min not too close, not too far : recollimation shock ? matter, radiation density : is Cyg X-3 unique ? X-rays X-ray min sup. conj. γ-ray max
The gamma ray log measures the total natural gamma radiation emanating from a formation. This gamma radiation originates from potassium-40 and the isotopes of the Uranium-Radium and Thorium series. The gamma ray log is commonly given the symbol GR. Once the gamma rays are emitted from an isotope in the formation, they progressively reduce in
Sins of a Solar Empire (or SoaSE for short) is an RTS PC game on a colossal scale. . The game is set in a galactic empire known as the Trade Order thriving in . But old habits die hard and old hatreds as well as the Vasari's . sins of a galactic empire guide, sins of a galactic empire super capital ships, sins of a galactic empire
The interaction of a galactic cosmic ray ion with nuclei in the surface of a planetary body produces . gamma production by galactic cosmic ray interactions with the bulk spacecraft and the buildup of induced radioactivity within the sensor). In addition, GRaND acquired data during Mars Closest Approach (MCA), which was compared directly to .
novative uses of gamma-ray logs in sequence stratigraphy as applied to distal marine environments. Thus, the principal aims of this paper are (1) to summarize the relationship between spectral gamma-ray logs, gross lithology and stratigraphic architecture for all sites drilled on Leg 150, and (2) to critically assess the use of spectral gamma-ray
– Hidden in Plain Sight - Scientists Discover Elusive Gamma-ray Pulsar (Max Planck) Upcoming press releases – PG 1553 periodicity: First gamma-ray and multiwavelength quasi-periodical oscillation in an active galactic nucleus. – LMC pulsar: first gamma-ray pulsar observed in another galaxy
MDC RADIOLOGY TEST LIST 5 RADIOLOGY TEST LIST - 2016 131 CONTRAST CT 3D Contrast X RAYS No. Group Modality Tests 132 HEAD & NECK X-Ray Skull 133 X-Ray Orbit 134 X-Ray Facial Bone 135 X-Ray Submentovertex (S.M.V.) 136 X-Ray Nasal Bone 137 X-Ray Paranasal Sinuses 138 X-Ray Post Nasal Space 139 X-Ray Mastoid 140 X-Ray Mandible 141 X-Ray T.M. Joint
INTRODUCTION TO GALACTIC CONSCIOUSNESS A 28-DAY PROGRAM FOUNDATION FOR THE LAW OF TIME 1 INTRODUCTION TO GALACTIC CONSCIOUSNESS A 28-DAY PROGRAM We are a fractal microcosm of a Vast Cosmic Plan. Our human body is a reflection of the holographic nature of the galaxy. Throughout history the galactic quality of our consciousness has been dormant.
ANSI A300 (Part 7), approved by industry consensus in 2006, contains many elements needed for an effective TVMP as required by this Standard. One key element is the “wire zone – border zone” concept. Supported by over 50 years of continuous research, wire zone – border zone is a proven method to manage vegetation on transmission rights-of-ways and is an industry accepted best practice .
