Class information for:
Level 1: QUASARS GENERAL//QUASARS GENERAL//QUASARS ABSORPTION LINES

Basic class information
ID Publications Average number
of references		 Avg. shr. active
ref. in WoS
3860 1820 38.2 67%


Bar chart of Publication_year

Last years might be incomplete

Classes in level above (level 2)


ID, lev.
above		 Publications Label for level above
71 27454 GALAXIES ACTIVE//GALAXIES SEYFERT//QUASARS GENERAL

Terms with highest relevance score


Rank Term Type of term Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 QUASARS GENERAL Author keyword 68 16% 21% 387
2 QUASARS GENERAL Author keyword 31 14% 11% 208
3 QUASARS ABSORPTION LINES Author keyword 26 17% 8% 140
4 QUASARS ABSORPTION LINES Author keyword 23 12% 10% 176
5 QUASARS EMISSION LINES Author keyword 8 12% 4% 64
6 QUASARS INDIVIDUAL PHL 1811 Author keyword 4 75% 0% 3
7 GALAXIES QUASARS GENERAL Author keyword 4 13% 1% 26
8 QUASARS INDIVIDUAL PG 0946301 Author keyword 3 100% 0% 3
9 COMP SCI ENGN PHYS Address 2 32% 0% 6
10 DPTO MATEMAT LICADA CIENCIAS COMP Address 2 67% 0% 2

Web of Science journal categories

Author Key Words


Rank Web of Science journal category Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class		 LCSH search Wikipedia search
1 QUASARS GENERAL 68 16% 21% 387 Search QUASARS++GENERAL Search QUASARS++GENERAL
2 QUASARS GENERAL 31 14% 11% 208 Search QUASARS+GENERAL Search QUASARS+GENERAL
3 QUASARS ABSORPTION LINES 26 17% 8% 140 Search QUASARS+ABSORPTION+LINES Search QUASARS+ABSORPTION+LINES
4 QUASARS ABSORPTION LINES 23 12% 10% 176 Search QUASARS++ABSORPTION+LINES Search QUASARS++ABSORPTION+LINES
5 QUASARS EMISSION LINES 8 12% 4% 64 Search QUASARS++EMISSION+LINES Search QUASARS++EMISSION+LINES
6 QUASARS INDIVIDUAL PHL 1811 4 75% 0% 3 Search QUASARS++INDIVIDUAL+PHL+1811 Search QUASARS++INDIVIDUAL+PHL+1811
7 GALAXIES QUASARS GENERAL 4 13% 1% 26 Search GALAXIES++QUASARS++GENERAL Search GALAXIES++QUASARS++GENERAL
8 QUASARS INDIVIDUAL PG 0946301 3 100% 0% 3 Search QUASARS++INDIVIDUAL+PG+0946301 Search QUASARS++INDIVIDUAL+PG+0946301
9 QSOS GENERAL 2 67% 0% 2 Search QSOS++GENERAL Search QSOS++GENERAL
10 GALAXIES INDIVIDUAL GB 14284217 1 100% 0% 2 Search GALAXIES++INDIVIDUAL++GB+14284217 Search GALAXIES++INDIVIDUAL++GB+14284217

Key Words Plus


Rank Web of Science journal category Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 STELLAR OBJECTS 82 28% 14% 246
2 BROAD ABSORPTION LINE 76 48% 6% 117
3 MULTIYEAR TIMESCALES 41 90% 1% 18
4 INTRINSIC FRACTION 41 100% 1% 15
5 QSOS 29 19% 8% 139
6 DISK WINDS 27 39% 3% 55
7 KECK HIRES OBSERVATIONS 27 71% 1% 22
8 EMISSION LINE 26 17% 8% 145
9 EQUATORIAL FIELDS 25 65% 1% 24
10 QSO 2359 1241 21 90% 0% 9

Journals

Reviews


Title Publ. year Cit. Active references % act. ref.
to same field
The Sloan Digital Sky Survey quasar survey: Quasar luminosity function from data release 3 2006 301 92 39%
A REVISED AND UPDATED CATALOG OF QUASI-STELLAR OBJECTS 1993 273 39 69%
A high-velocity narrow absorption line outflow in the quasar J212329.46-005052.9 2011 31 96 59%
Unusual broad absorption line quasars from the Sloan Digital Sky Survey 2002 155 127 50%
THE SPACE DISTRIBUTION OF QUASARS 1990 256 119 55%
THE FIRST-2MASS RED QUASAR SURVEY. II. AN ANOMALOUSLY HIGH FRACTION OF LoBALs IN SEARCHES FOR DUST-REDDENED QUASARS 2009 41 96 36%
Chandra survey of radio-quiet, high-redshift quasars 2003 62 88 48%
A FULL YEAR'S CHANDRA EXPOSURE ON SLOAN DIGITAL SKY SURVEY QUASARS FROM THE CHANDRA MULTIWAVELENGTH PROJECT 2009 36 121 35%
Chandra and XMM-Newton observations of the first quasars: X-rays from the age of cosmic enlightenment 2003 43 78 47%
A census of intrinsic narrow absorption lines in the spectra of quasars at z=2-4 2007 32 112 40%

Address terms


Rank Address term Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ.
in class
1 COMP SCI ENGN PHYS 2 32% 0.3% 6
2 DPTO MATEMAT LICADA CIENCIAS COMP 2 67% 0.1% 2
3 OBSERV ASTRON CERRO CALAN 2 30% 0.3% 6
4 PHYS ASTRON 3905 1 21% 0.3% 6
5 MATEMAT LICADA C COMPUTAC 1 100% 0.1% 2
6 3905 1 30% 0.2% 3
7 JOINT GALAXIES COSMOL 1 25% 0.2% 3
8 MULTIPLE MIRROR TELESCOPE OBSERV 1 13% 0.3% 6
9 DPTO FIS MODERNA 1 18% 0.2% 4
10 ALMA SCI 1 50% 0.1% 1

Related classes at same level (level 1)


Rank Relatedness score Related classes
1 0.0000262181 GALAXIES INDIVIDUAL IC 2497//QUASARS INDIVIDUAL I ZW 1//GALAXIES FUNDAMENTAL PARAMETERS CLASSIFICATION COLORS LUMINOSITIES MASSES RADII ETC
2 0.0000259406 QUASARS EMISSION LINES//QUASARS EMISSION LINES//GALAXIES SEYFERT
3 0.0000194137 X RAYS DIFFUSE BACKGROUND//QUASARS GENERAL//X RAYS GALAXIES
4 0.0000175870 DISTANCES AND REDSHIFTS//DISCORDANT REDSHIFTS//GALAXIES INDIVIDUAL NGC 7603
5 0.0000161264 X RAYS GALAXIES//GALAXIES SEYFERT//GALAXIES ACTIVE
6 0.0000132646 QUASARS ABSORPTION LINES//QUASARS ABSORPTION LINES//INTERGALACTIC MEDIUM
7 0.0000117754 ASSOCIATED INAF//CSIRO RADIOPHYS//CYLINDRICAL PARABOLIC REFLECTORS
8 0.0000096606 GRAVITATIONAL LENSING//GRAVITATIONAL LENSING STRONG//QUASARS INDIVIDUAL Q22370305
9 0.0000089926 DE SITTER INVARIANCE//CHRONOMETRIC THEORY//COMPLETE SAMPLE
10 0.0000086966 BL LACERTAE OBJECTS GENERAL//BL LACERTAE OBJECTS GENERAL//GALAXIES ACTIVE