Results 171 to 180 of about 512 (184)

The contribution of the obscuring torus to the X-ray spectrum of Seyfert galaxies: a test for the unification model

Monthly Notices of the Royal Astronomical Society, 1994
F Haardt, G Matt, Gabriele Ghisellini
exaly  

WISEview of narrow-line Seyfert 1 galaxies: mid-infrared colour and variability

Monthly Notices of the Royal Astronomical Society, 2019
Suvendu Rakshit, C S Stalin, P Gandhi
exaly  

Seyfert galaxies and QSOs

Nature, 1976
openaire   +1 more source

Unabsorbed Seyfert 2 galaxies

Astronomy and Astrophysics, 2002
F Panessa, L Bassani
exaly  

Limits on Seyfert Galaxies

Nature, 1971
openaire   +1 more source

Intra-night optical monitoring of three γ-ray detected narrow-line Seyfert 1 galaxies

Monthly Notices of the Royal Astronomical Society, 2019
Vineet Ojha, Hum Chand, Chand Hum
exaly  

Torus model properties of an ultra-hard X-ray selected sample of Seyfert galaxies

Monthly Notices of the Royal Astronomical Society, 2019
I García-Bernete, C Ramos Almeida, J A Acosta-Pulido   +2 more
exaly  

Narrow-line Seyfert 1 galaxies at hard X-rays★

Monthly Notices of the Royal Astronomical Society, 2011
F Panessa, A De Rosa, L Bassani
exaly  

Spectral synthesis of the nuclear regions of Seyfert 2 and radio galaxies

Monthly Notices of the Royal Astronomical Society, 1999
Henrique R Schmitt, Thaisa Storchi-Bergmann, R Cid Fernandes   +2 more
exaly  

X-ray spectral complexity in narrow-line Seyfert 1 galaxies

Monthly Notices of the Royal Astronomical Society, 1999
S Vaughan, J Reeves, R Warwick
exaly