We report on discovery results from a quasar lens search in the ATLAS-DR3 public footprint. Spectroscopic follow-up campaigns, conducted at the 2.6 m Nordic Optical Telescope (La Palma) and 3.6mNew Technology Telescope (La Silla) in 2016, yielded seven pairs of quasars exhibiting the same lines a...
Agnello, A.
,
Schechter, P.L.
,
Morgan, N.D.
,
Treu, T.
,
Grillo, C.
,
Malesani, D.
,
Anguita, T.
,
Apostolovski, Y.
,
Rusu, C.E.
,
Motta, V.
,
Rojas, K.
,
Chehade, B.
,
Shanks, T.
,
[Quasar lenses and pairs in the VST-ATLAS and Gaia]
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Quasar lenses and pairs in the VST-ATLAS and Gaia
Blazars, one of the most extreme classes of active galaxies, constitute so far the largest known population of.-ray sources, and their number is continuously growing in the Fermi catalogs. However, in the latest release of the Fermi catalog there is still a large fraction of sources that are clas...
Crespo, NA
,
Massaro, F
,
Milisavljevic, D
,
Landoni, M
,
Chavushyan, V
,
Patino-Alvarez, V
,
Masetti, N
,
Jimenez-Bailon, E
,
Strader, J
,
Chomiuk, L
,
Katagiri, H
,
Kagaya, M
,
Cheung, CC
,
Paggi, A
,
D'Abrusco, R
,
Ricci, F
,
La Franca, F
,
Smith, HA
,
Tosti, G
,
[OPTICAL SPECTROSCOPIC OBSERVATIONS OF GAMMA-RAY BLAZAR CANDIDATES. VI. FURTHER OBSERVATIONS FROM TNG, WHT, OAN, SOAR, AND MAGELLAN TELESCOPES]
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OPTICAL SPECTROSCOPIC OBSERVATIONS OF GAMMA-RAY BLAZAR CANDIDATES. VI. FURTHER OBSERVATIONS FROM TNG, WHT, OAN, SOAR, AND MAGELLAN TELESCOPES
Oh, K
,
Schawinski, K
,
Koss, M
,
Trakhtenbrot, B
,
Lamperti, I
,
Ricci, C
,
Mushotzky, R
,
Veilleux, S
,
Berney, S
,
Crenshaw, DM
,
Gehrels, N
,
Harrison, F
,
Masetti, N
,
Soto, KT
,
Stern, D
,
Treister, E
,
Ueda, Y
,
[BAT AGN Spectroscopic Survey – III. An observed link between AGN Eddington ratio and narrow-emission-line ratios]
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BAT AGN Spectroscopic Survey – III. An observed link between AGN Eddington ratio and narrow-emission-line ratios
The existence of "radio-weak BL Lac objects" (RWBLs) has been an open question, and has remained unsolved since the discovery that quasars could be radio-quiet or radio-loud. Recently, several groups identified RWBL candidates, mostly found while searching for low-energy counterparts of the unide...
Massaro, F
,
Marchesini, EJ
,
D'Abrusco, R
,
Masetti, N
,
Andruchow, I
,
Smith, HA
,
[RADIO-WEAK BL LAC OBJECTS IN THE FERMI ERA]
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RADIO-WEAK BL LAC OBJECTS IN THE FERMI ERA