Interaction between the intergalactic medium and central radio source in the NGC 4261 group of galaxies

E. O'Sullivan*, D. M. Worrall, M. Birkinshaw, G. Trinchieri, A. Wolter, A. Zezas, S. Giacintucci

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

32 Citations (Scopus)

Abstract

Using observations from the Chandra and XMM-Newton X-ray observatories, we examine the interaction between the intragroup medium and central radio source in the nearby NGC 4261 galaxy group. We confirm the presence of cavities associated with the radio lobes and estimate their enthalpy to be similar to 2.4 x 10(58) erg. The mechanical power output of the jets is >= 10(43) erg s(-1), at least a factor of 60 greater than the cooling luminosity in the region the lobes inhabit. We identify rims of compressed gas enclosing the lobes, but find no statistically significant temperature difference between them and their surroundings, suggesting that the lobe expansion velocity is approximately sonic (M

Original languageEnglish
Pages (from-to)2916-2931
Number of pages16
JournalMonthly Notices of the Royal Astronomical Society
Volume416
Issue number4
DOIs
Publication statusPublished - Oct 2011

Keywords

  • galaxies: active
  • galaxies: individual: 3C 270
  • galaxies: individual: NGC4261
  • intergalactic medium
  • X-rays: galaxies
  • DEEP CHANDRA OBSERVATION
  • X-RAY LUMINOSITY
  • ACTIVE GALACTIC NUCLEUS
  • HUBBLE-SPACE-TELESCOPE
  • XMM-NEWTON OBSERVATION
  • ELLIPTIC GALAXIES
  • STAR-FORMATION
  • HOT GAS
  • BLACK-HOLE
  • JET POWER

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