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SLOSHING COLD FRONTS IN GROUPS

SLOSHING COLD FRONTS IN GROUPS. FABIO GASTALDELLO (IASF-MILAN, UC IRVINE) DI GESU, BUOTE, ECKERT, ETTORI, GHIZZARDI, GIACINTUCCI, GIRARDI, HUMPHREY, ROSSETTI, ROEDIGER, DE GRANDI, MOLENDI, MATHEWS, BRIGHENTI.

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SLOSHING COLD FRONTS IN GROUPS

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  1. SLOSHING COLD FRONTS IN GROUPS FABIO GASTALDELLO (IASF-MILAN, UC IRVINE) DI GESU, BUOTE, ECKERT, ETTORI, GHIZZARDI, GIACINTUCCI, GIRARDI, HUMPHREY, ROSSETTI, ROEDIGER, DE GRANDI, MOLENDI, MATHEWS, BRIGHENTI

  2. SLOSHING COLD FRONTS IN GROUPS: NGC 5044, IC 1860, NGC 5846 • PECULIAR VELOCITIES OF THE BCGs • OPTICALLY DISTURBED SPIRAL GALAXIES AS PERTURBERS • RADIO EMISSION OUTLINE

  3. SLOSHING CFs IN NGC 5044 z=0.009 kT=1.2 keV Gastaldello+09

  4. SLOSHING CFs IN NGC 5044 z=0.009 kT=1.2 keV Gastaldello+09

  5. SLOSHING CFs IN NGC 5044 Gastaldello+09

  6. SLOSHING CFs IN NGC 5044 z=0.009 kT=1.2 keV Gastaldello+09

  7. EXCESS IN NGC 5044

  8. EXCESS IN NGC 5044

  9. EXCESS IN NGC 5044

  10. z=0.022 kT=1.4 keV SLOSHING CFs IN IC 1860 FG et al. submitted

  11. z=0.022 kT=1.4 keV SLOSHING CFs IN IC 1860 FG et al. submitted

  12. SLOSHING CFs IN IC 1860 FG et al. submitted

  13. SLOSHING CFs IN IC 1860 FG et al. in prep

  14. SLOSHING CFs IN IC 1860

  15. SLOSHING CFs IN IC 1860

  16. COMPARISON W/ SIMULATIONS

  17. SLOSHING CFs IN NGC 5846 Machacek+11

  18. SLOSHING CFs IN NGC 5846 Machacek+11

  19. SLOSHING CFs IN NGC 5846 Machacek+11

  20. SLOSHING CFs IN NGC 5846

  21. SLOSHING CFs IN NGC 5846

  22. PECULIAR VELOCITIES AND PERTURBERS AM 06

  23. PECULIAR VELOCITIES AND PERTURBERS: NGC 5846 Machacek+11

  24. NGC 5850: HIGH SPEED ENCOUNTER WITH NGC 5846 ? Higdon+98

  25. NGC 5850: HIGH SPEED ENCOUNTER WITH NGC 5846 ? Higdon+98

  26. NGC 5850: HIGH SPEED ENCOUNTER WITH NGC 5846 ? Higdon+98

  27. MENDEL+08 STUDY OF 111 MEMBERS: PECULIAR VELOCITY OF 156 km/s WRT THE MEAN VELOCITY Z-score: 4.8σ PECULIAR VELOCITIES AND PERTURBERS: NGC 5044

  28. PECULIAR VELOCITIES AND PERTURBERS: NGC 5044 DETECTION OF A SUBSTRUCTURE (99.9 %) AT 1.4 Mpc MENDEL+08. OR NGC 5054 (DAVID+09).

  29. PECULIAR VELOCITIES AND PERTURBERS: NGC 5044 cz = 2733 km/s cz = 1658 km/s

  30. cz = 2733 km/s PECULIAR VELOCITIES AND PERTURBERS: NGC 5044 cz = 1658 km/s

  31. PECULIAR VELOCITIES AND PERTURBERS: IC1860 STUDY OF 81 MEMBERS AVAILABLE IN NED: PECULIAR VELOCITY OF 113±50 km/s (Z-score significant at the 2.3σ level) WRT THE MEAN VELOCITY

  32. PECULIAR VELOCITIES AND PERTURBERS: IC1860 PRESENCE OF SUBSTRUCTURES AT A MARGINAL LEVEL 96%

  33. PECULIAR VELOCITIES AND PERTURBERS: IC1860

  34. PECULIAR VELOCITIES AND PERTURBERS: IC1860

  35. PECULIAR VELOCITIES AND PERTURBERS: NGC 5846 39 OBJECTS WITHIN 400 Kpc, NO SIGNIFICANT SUBSTRUCTURES, PECULIAR VELOCITY OF THE BCG OF -119 Km/s SIGNIFICANT AT 1.6σ

  36. RADIO EMISSION: NGC 5044 David+09 GMRT RADIO DATA AT 610 MHz

  37. RADIO EMISSION: NGC 5044 David+09 GMRT RADIO DATA AT 235 MHz

  38. RADIO EMISSION: NGC 5044 David+09 GMRT RADIO DATA AT 235 MHz

  39. RADIO EMISSION: NGC 5846 Machacek+11 GMRT RADIO DATA AT 610 MHz

  40. RADIO EMISSION: IC 1860 ABSENCE OF EXTENDED 1.4 GHz EMISSION (DUNN+10)

  41. RADIO EMISSION: IC 1860 GMRT RADIO DATA AT 325 MHz. EMISSION AT THESE SCALES INDICATES VERY STEEP SPECTRUM.

  42. RADIO EMISSION ZuHone+13

  43. COLD FRONTS IN RELAXED GROUPS ARE PROBABLY PROVIDING THE BEST EVIDENCE OF THE SLOSHING SCENARIO. WE FIND THE RIGHT FEATURES IN THE ICM, PECULIAR VELOCITIES OF THE BCGs AND GOOD CANDIDATES FOR THE PERTURBER • IN IC1860 WE HAVE EVIDENCE OF COINCIDENCE OF EXTENDED RADIO EMISSION SPATIALLY COINCIDENT WITH THE EXTENT OF A COLD FRONT (UNLIKE OTHER GROUPS). DO WE NEED REACCELERATION ? SUMMARY

  44. SIMULATIONS TAILORED TO THE GROUP REGIME • RADIO OBSERVATIONS AND PARTICLE ACCELERATIONS IN GROUPS WISH LIST

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