Bulletin de la Société Royale des Sciences de Liège

0037-9565 1783-5720

 

ya que 05 febrero 2011 :
Vista(s): 631 (4 ULiège)
Descargar(s): 32 (0 ULiège)
print        
Vineet Ojha, Hum Chand & Krishna Gopal

Intra-night optical variability properties of X-ray bright Narrow-line Seyfert 1 galaxies

(Volume 87 - Année 2018 — Actes de colloques — First Belgo-Indian Network for Astronomy & Astrophysics (BINA) workshop - November 2016 - Nainital, India)
DOI: 10.25518/0037-9565.7798
Article
Open Access

Documento adjunto(s)

Version PDF originale
Mots-clés : AGN, astronomie, astrophysique, extragalactique, variabilité

Abstract

We present Intra Night Optical Variability (INOV) study of the 9 Narrow-line Seyfert 1 (NLSy 1) galaxies which are detected in X-ray at more than 3σ level. Our observations cover a total of 9 nights (~ 36 hr) with each NLSy 1 monitored for ≥ 3.5 hr in each night. After applying F-test to assess variability status of these sources, we found none of these sources to be variable. Such non-variability nature of X-ray detected NLSy 1 galaxies suggests the lack of jet dominance as far as X-ray emission is concerned. Higher photometric accuracy for these faint sources, achievable with the newly installed ARIES 3.6m DOT will be helpful.

Keywords : AGN, astronomy, astrophysics, extragalactic, variability

Para citar este artículo

Vineet Ojha, Hum Chand & Krishna Gopal, «Intra-night optical variability properties of X-ray bright Narrow-line Seyfert 1 galaxies», Bulletin de la Société Royale des Sciences de Liège [En ligne], Volume 87 - Année 2018, Actes de colloques, First Belgo-Indian Network for Astronomy & Astrophysics (BINA) workshop - November 2016 - Nainital, India, 387 - 390 URL : https://popups.uliege.be/0037-9565/index.php?id=7798.

Acerca de: Vineet Ojha

Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, Nainital 263002, India, vineet@aries.res.in

Acerca de: Hum Chand

Aryabhatta Research Institute of Observational Sciences (ARIES), Manora Peak, Nainital 263002, India

Acerca de: Krishna Gopal

Centre for Excellence in Basic Sciences (CBS), University of Mumbai campus (Kalina) 400098, India