Class information for:
Level 1: QUASARS GENERAL//GALAXIES ACTIVE//X RAYS GALAXIES

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
963 2935 64.8 85%


Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes
The table includes all classes above and classes immediately below the current class.


Cluster id Level Cluster label #P
19 4 ASTRONOMY & ASTROPHYSICS//ASTROPHYSICAL JOURNAL//ASTRON 523489
8 3       ASTRONOMY & ASTROPHYSICS//ASTROPHYSICAL JOURNAL//MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 146114
0 2             GALAXIES EVOLUTION//ASTRONOMY & ASTROPHYSICS//MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 61580
963 1                   QUASARS GENERAL//GALAXIES ACTIVE//X RAYS GALAXIES 2935

Terms with highest relevance score


rank Term termType Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with term
in class
1 QUASARS GENERAL authKW 3069519 37% 27% 1097
2 GALAXIES ACTIVE authKW 2426786 56% 14% 1657
3 X RAYS GALAXIES authKW 719147 20% 12% 593
4 GALAXIES NUCLEI authKW 678475 19% 12% 551
5 X RAYS DIFFUSE BACKGROUND authKW 549187 5% 39% 134
6 SURVEYS authKW 347443 15% 7% 451
7 GALAXIES EVOLUTION authKW 345908 21% 5% 614
8 QUASARS EMISSION LINES authKW 290365 6% 16% 175
9 BLACK HOLE PHYSICS authKW 282061 13% 7% 380
10 GALAXIES BULGES authKW 252371 4% 24% 103

Web of Science journal categories


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with term
in class
1 Astronomy & Astrophysics 172004 99% 1% 2892
2 Engineering, Aerospace 10 1% 0% 15
3 Meteorology & Atmospheric Sciences -0 1% 0% 19
4 Humanities, Multidisciplinary -2 0% 0% 1
5 Multidisciplinary Sciences -5 0% 0% 2
6 Social Sciences, Interdisciplinary -6 0% 0% 1
7 Physics, Particles & Fields -8 1% 0% 15
8 Physics, Multidisciplinary -8 1% 0% 35
9 Geosciences, Multidisciplinary -9 1% 0% 19
10 Statistics & Probability -13 0% 0% 2

Address terms


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with term
in class
1 ASTRON 226814 40% 2% 1168
2 STEWARD OBSERV 134626 8% 5% 245
3 DAVEY 525 117219 3% 12% 98
4 ASTRON ASTROPHYS 115658 14% 3% 413
5 DIPARTIMENTO ASTRON 94266 5% 6% 154
6 YALE ASTRON ASTROPHYS 82401 2% 16% 51
7 GRAVITAT COSMOS 76869 2% 11% 70
8 INAF 73862 7% 3% 208
9 ASTROPHYS SCI 49267 4% 4% 125
10 PHYS ASTRON 48362 29% 1% 865

Journals


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with term
in class
1 MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 143610 27% 2% 778
2 ASTROPHYSICAL JOURNAL 135005 34% 1% 1008
3 ASTRONOMICAL JOURNAL 31033 7% 1% 207
4 ASTRONOMY & ASTROPHYSICS 26677 12% 1% 362
5 ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 18742 3% 2% 92
6 ASTRONOMISCHE NACHRICHTEN 15001 2% 2% 70
7 NEW ASTRONOMY REVIEWS 14254 1% 3% 41
8 ASTROPHYSICAL JOURNAL LETTERS 13546 3% 1% 90
9 ADVANCES IN ASTRONOMY 2770 0% 3% 8
10 PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 1287 1% 1% 22

Author Key Words


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with term
in class		 LCSH search Wikipedia search
1 QUASARS GENERAL 3069519 37% 27% 1097 Search QUASARS+GENERAL Search QUASARS+GENERAL
2 GALAXIES ACTIVE 2426786 56% 14% 1657 Search GALAXIES+ACTIVE Search GALAXIES+ACTIVE
3 X RAYS GALAXIES 719147 20% 12% 593 Search X+RAYS+GALAXIES Search X+RAYS+GALAXIES
4 GALAXIES NUCLEI 678475 19% 12% 551 Search GALAXIES+NUCLEI Search GALAXIES+NUCLEI
5 X RAYS DIFFUSE BACKGROUND 549187 5% 39% 134 Search X+RAYS+DIFFUSE+BACKGROUND Search X+RAYS+DIFFUSE+BACKGROUND
6 SURVEYS 347443 15% 7% 451 Search SURVEYS Search SURVEYS
7 GALAXIES EVOLUTION 345908 21% 5% 614 Search GALAXIES+EVOLUTION Search GALAXIES+EVOLUTION
8 QUASARS EMISSION LINES 290365 6% 16% 175 Search QUASARS+EMISSION+LINES Search QUASARS+EMISSION+LINES
9 BLACK HOLE PHYSICS 282061 13% 7% 380 Search BLACK+HOLE+PHYSICS Search BLACK+HOLE+PHYSICS
10 GALAXIES BULGES 252371 4% 24% 103 Search GALAXIES+BULGES Search GALAXIES+BULGES

Core articles
The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.


Rank Reference # ref. in
cl.		 Shr. of ref. in
cl.		 Citations
1 BRANDT, WN , ALEXANDER, DM , (2015) COSMIC X-RAY SURVEYS OF DISTANT ACTIVE GALAXIES THE DEMOGRAPHICS, PHYSICS, AND ECOLOGY OF GROWING SUPERMASSIVE BLACK HOLES.ASTRONOMY AND ASTROPHYSICS REVIEW. VOL. 23. ISSUE . P. - 320 65% 26
2 KORMENDY, J , HO, LC , (2013) COEVOLUTION (OR NOT) OF SUPERMASSIVE BLACK HOLES AND HOST GALAXIES.ANNUAL REVIEW OF ASTRONOMY AND ASTROPHYSICS, VOL 51. VOL. 51. ISSUE . P. 511 -653 199 27% 495
3 ALEXANDER, DM , HICKOX, RC , (2012) WHAT DRIVES THE GROWTH OF BLACK HOLES?.NEW ASTRONOMY REVIEWS. VOL. 56. ISSUE 4. P. 93 -121 255 39% 113
4 KELLY, BC , SHEN, Y , (2013) THE DEMOGRAPHICS OF BROAD-LINE QUASARS IN THE MASS-LUMINOSITY PLANE. II. BLACK HOLE MASS AND EDDINGTON RATIO FUNCTIONS.ASTROPHYSICAL JOURNAL. VOL. 764. ISSUE 1. P. - 157 70% 50
5 UEDA, Y , AKIYAMA, M , HASINGER, G , MIYAJI, T , WATSON, MG , (2014) TOWARD THE STANDARD POPULATION SYNTHESIS MODEL OF THE X-RAY BACKGROUND: EVOLUTION OF X-RAY LUMINOSITY AND ABSORPTION FUNCTIONS OF ACTIVE GALACTIC NUCLEI INCLUDING COMPTON-THICK POPULATIONS.ASTROPHYSICAL JOURNAL. VOL. 786. ISSUE 2. P. - 102 73% 95
6 SHANKAR, F , BERNARDI, M , SHETH, RK , FERRARESE, L , GRAHAM, AW , SAVORGNAN, G , ALLEVATO, V , MARCONI, A , LASKER, R , LAPI, A , (2016) SELECTION BIAS IN DYNAMICALLY MEASURED SUPERMASSIVE BLACK HOLE SAMPLES: ITS CONSEQUENCES AND THE QUEST FOR THE MOST FUNDAMENTAL RELATION.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. VOL. 460. ISSUE 3. P. 3119 -3142 123 56% 10
7 SCHULZE, A , BONGIORNO, A , GAVIGNAUD, I , SCHRAMM, M , SILVERMAN, J , MERLONI, A , ZAMORANI, G , HIRSCHMANN, M , MAINIERI, V , WISOTZKI, L , ET AL (2015) THE COSMIC GROWTH OF THE ACTIVE BLACK HOLE POPULATION AT 1 < Z < 2 IN ZCOSMOS, VVDS AND SDSS.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. VOL. 447. ISSUE 3. P. 2085 -2111 124 73% 10
8 MIYAJI, T , HASINGER, G , SALVATO, M , BRUSA, M , CAPPELLUTI, N , CIVANO, F , PUCCETTI, S , ELVIS, M , BRUNNER, H , FOTOPOULOU, S , ET AL (2015) DETAILED SHAPE AND EVOLUTIONARY BEHAVIOR OF THE X-RAY LUMINOSITY FUNCTION OF ACTIVE GALACTIC NUCLEI.ASTROPHYSICAL JOURNAL. VOL. 804. ISSUE 2. P. - 97 90% 12
9 AIRD, J , COIL, AL , GEORGAKAKIS, A , NANDRA, K , BARRO, G , PEREZ-GONZALEZ, PG , (2015) THE EVOLUTION OF THE X-RAY LUMINOSITY FUNCTIONS OF UNABSORBED AND ABSORBED AGNS OUT TO Z SIMILAR TO 5.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY. VOL. 451. ISSUE 2. P. 1892 -1927 100 71% 29
10 HOPKINS, PF , RICHARDS, GT , HERNQUIST, L , (2007) AN OBSERVATIONAL DETERMINATION OF THE BOLOMETRIC QUASAR LUMINOSITY FUNCTION.ASTROPHYSICAL JOURNAL. VOL. 654. ISSUE 2. P. 731 -753 105 64% 471

Classes with closest relation at Level 1


Rank Class id link
1 1637 QUASARS EMISSION LINES//GALAXIES ACTIVE//QUASARS GENERAL
2 6427 QUASARS GENERAL//ASTRONOMY & ASTROPHYSICS//QUASARS
3 11304 BLACK HOLE PHYSICS//GALAXIES NUCLEI//QUASARS INDIVIDUAL SDSS J153636220441270
4 1154 INFRARED GALAXIES//GALAXIES STARBURST//SUBMILLIMETER GALAXIES
5 1235 X RAYS GALAXIES//GALAXIES SEYFERT//GALAXIES ACTIVE
6 92 GALAXIES EVOLUTION//GALAXIES FORMATION//GALAXIES HIGH REDSHIFT
7 193 GALAXIES SEYFERT//GALAXIES NUCLEI//INFRARED GALAXIES
8 9534 X RAYS BINARIES//X RAYS GALAXIES//BLACK HOLE PHYSICS
9 5643 GALAXIES HIGH REDSHIFT//GALAXIES FORMATION//GALAXIES EVOLUTION
10 17431 GALAXIES DISTANCES AND REDSHIFTS//METHODS DATA ANALYSIS//SPECTRAL LINE EXTRACTION

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