Skip navigation
  • INAF logo
  • Home
  • Communities
    & Collections
  • Research outputs
  • Researchers
  • Organization units
  • Projects
  • Explore by
    • Research outputs
    • Researchers
    • Organization units
    • Projects
  • Login:
    • My DSpace
    • Receive email
      updates
    • Edit Account details
  • Italian
  • English

  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/28507
Title: The Powerful Jet and Gamma-Ray Flare of the Quasar PKS 0438-436
Authors: Punsly, Brian
Tramacere, Andrea
Kharb, Preeti
MARZIANI, Paola 
Issue Date: 2018
Journal: THE ASTROPHYSICAL JOURNAL 
Number: 869
Issue: 2
First Page: 174
Abstract: PKS 0438-436, at a redshift of z = 2.856, has been previously recognized as possessing perhaps the most luminous known synchrotron jet. Little is known about this source since the maximum elevation above the horizon is low for the Very Large Array (VLA). We present the first VLA radio image that detects the radio lobes. We use both the 151 MHz luminosity, as a surrogate for the isotropic radio lobe luminosity, and the lobe flux density from the radio image to estimate a long-term, time-averaged, jet power, \overline{Q}=1.5+/- 0.7× {10}<SUP>47</SUP> {erg} {{{s}}}<SUP>-1</SUP>. We analyze two deep optical spectra with strong broad emission lines and estimate the thermal bolometric luminosity of the accretion flow, L <SUB>bol</SUB> = 6.7 ± 3.0 × 10<SUP>46</SUP> erg s<SUP>-1</SUP>. The ratio \overline{Q}/{L}<SUB>bol</SUB>}=3.3+/- 2.6 is at the limit of this empirical metric of jet dominance seen in radio-loud quasars and this is the most luminous accretion flow to have this limiting behavior. Despite being a very luminous blazar, it previously had no γ-ray detections until 2016 December 11-13 (54 hr) when FERMI detected a flare that we analyze here. The isotropic apparent luminosity from 100 MeV-100 GeV rivals the most luminous detected blazar flares (averaged over 18 hr), ∼5-6 × 10<SUP>49</SUP> erg s<SUP>-1</SUP>. The γ-ray luminosity varies over time by two orders of magnitude, highlighting the extreme role of Doppler abberation and geometric alignment in producing the inverse Compton emission.
URI: http://hdl.handle.net/20.500.12386/28507
URL: https://iopscience.iop.org/article/10.3847/1538-4357/aaefe7
https://arxiv.org/pdf/1811.05771.pdf
ISSN: 0004-637X
DOI: 10.3847/1538-4357/aaefe7
Bibcode ADS: 2018ApJ...869..174P
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

Files in This Item:
File Description SizeFormat 
1811.05771.pdfpreprint679.09 kBAdobe PDFView/Open
Punsly_2018_ApJ_869_174.pdfPdf editoriale1.5 MBAdobe PDFView/Open
Show full item record

Page view(s)

4
checked on Jan 16, 2021

Download(s)

2
checked on Jan 16, 2021

Google ScholarTM

Check

Altmetric


Items in DSpace are published in Open Access, unless otherwise indicated.


Explore by
  • Communities
    & Collections
  • Research outputs
  • Researchers
  • Organization units
  • Projects

Informazioni e guide per autori

https://openaccess-info.inaf.it: tutte le informazioni sull'accesso aperto in INAF

Come si inserisce un prodotto: le guide a OA@INAF

La Policy INAF sull'accesso aperto

Documenti e modelli scaricabili

Feedback
Built with DSpace-CRIS - Extension maintained and optimized by Logo 4SCIENCE