Class information for:
Level 1: GALAXIES ACTIVE//X RAYS DIFFUSE BACKGROUND//X RAYS GALAXIES

Basic class information

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
23 4 ASTRONOMY & ASTROPHYSICS//ASTROPHYSICAL JOURNAL//ASTRON 393400
1 3       ASTRONOMY & ASTROPHYSICS//ASTROPHYSICAL JOURNAL//ASTRON 234120
0 2             GALAXIES EVOLUTION//ASTRONOMY & ASTROPHYSICS//GALAXIES FORMATION 63445
6241 1                   GALAXIES ACTIVE//X RAYS DIFFUSE BACKGROUND//X RAYS GALAXIES 1537

Terms with highest relevance score



rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 GALAXIES ACTIVE authKW 1466321 61% 8% 935
2 X RAYS DIFFUSE BACKGROUND authKW 1290385 10% 43% 148
3 X RAYS GALAXIES authKW 1121274 35% 10% 532
4 QUASARS GENERAL authKW 906730 28% 10% 431
5 X RAYS GENERAL authKW 599832 16% 12% 243
6 SURVEYS authKW 487058 25% 6% 388
7 GALAXIES SEYFERT authKW 150124 11% 5% 162
8 DIFFUSE RADIATION authKW 146947 6% 8% 89
9 INFRARED GALAXIES authKW 138739 10% 4% 160
10 GALAXIES NUCLEI authKW 118314 11% 3% 167

Web of Science journal categories



chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Astronomy & Astrophysics 89612 98% 0% 1506
2 Engineering, Aerospace 87 1% 0% 21
3 Meteorology & Atmospheric Sciences 7 1% 0% 21
4 Geosciences, Multidisciplinary 0 1% 0% 21
5 Physics, Particles & Fields 0 1% 0% 16
6 Physics, Nuclear -6 0% 0% 4
7 Statistics & Probability -7 0% 0% 1
8 Nuclear Science & Technology -7 0% 0% 3
9 Spectroscopy -7 0% 0% 2
10 Physics, Multidisciplinary -8 1% 0% 14

Address terms



chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 DIPARTIMENTO ASTRON 112249 8% 5% 120
2 YALE ASTRON ASTROPHYS 108553 3% 12% 43
3 ASTRON 107084 38% 1% 585
4 DAVEY 525 105549 4% 8% 67
5 GRAVITAT COSMOS 99503 4% 8% 60
6 ASTRON ASTROPHYS 99288 18% 2% 280
7 INAF 83032 10% 3% 160
8 EXTRAGALACT ASTRON 82062 2% 14% 29
9 ASTRON SEDE ENSENADA 82011 0% 67% 6
10 STEWARD OBSERV 69461 8% 3% 128

Journals



chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 68017 26% 1% 392
2 ASTROPHYSICAL JOURNAL 57604 31% 1% 476
3 ASTRONOMISCHE NACHRICHTEN 34189 5% 2% 76
4 ASTRONOMY & ASTROPHYSICS 29484 18% 1% 272
5 ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 16387 4% 1% 62
6 ASTRONOMICAL JOURNAL 4632 4% 0% 58
7 ASTROPHYSICAL JOURNAL LETTERS 3180 2% 0% 32
8 NEW ASTRONOMY REVIEWS 1655 1% 1% 10
9 EXPERIMENTAL ASTRONOMY 1058 0% 1% 6
10 PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 875 1% 0% 13

Author Key Words



chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 GALAXIES ACTIVE 1466321 61% 8% 935 Search GALAXIES+ACTIVE Search GALAXIES+ACTIVE
2 X RAYS DIFFUSE BACKGROUND 1290385 10% 43% 148 Search X+RAYS+DIFFUSE+BACKGROUND Search X+RAYS+DIFFUSE+BACKGROUND
3 X RAYS GALAXIES 1121274 35% 10% 532 Search X+RAYS+GALAXIES Search X+RAYS+GALAXIES
4 QUASARS GENERAL 906730 28% 10% 431 Search QUASARS+GENERAL Search QUASARS+GENERAL
5 X RAYS GENERAL 599832 16% 12% 243 Search X+RAYS+GENERAL Search X+RAYS+GENERAL
6 SURVEYS 487058 25% 6% 388 Search SURVEYS Search SURVEYS
7 GALAXIES SEYFERT 150124 11% 5% 162 Search GALAXIES+SEYFERT Search GALAXIES+SEYFERT
8 DIFFUSE RADIATION 146947 6% 8% 89 Search DIFFUSE+RADIATION Search DIFFUSE+RADIATION
9 INFRARED GALAXIES 138739 10% 4% 160 Search INFRARED+GALAXIES Search INFRARED+GALAXIES
10 GALAXIES NUCLEI 118314 11% 3% 167 Search GALAXIES+NUCLEI Search GALAXIES+NUCLEI

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.

Classes with closest relation at Level 1



rank cluster_id2 link
1 4474 GALAXIES NUCLEI//BLACK HOLE PHYSICS//GALAXIES ACTIVE
2 8687 QUASARS GENERAL//QUASARS//ASTRONOMY & ASTROPHYSICS
3 397 INFRARED GALAXIES//GALAXIES STARBURST//SUBMILLIMETER GALAXIES
4 21103 QUASARS GENERAL//QUASARS INDIVIDUAL HE 0450 2958//QUASARS INDIVIDUAL I ZW 1
5 1009 GALAXIES SEYFERT//GALAXIES NUCLEI//GALAXIES INDIVIDUAL NGC 1068
6 330 GALAXIES EVOLUTION//GALAXIES FORMATION//GALAXIES HIGH REDSHIFT
7 2000 X RAYS GALAXIES//GALAXIES SEYFERT//GALAXIES ACTIVE
8 928 QUASARS EMISSION LINES//QUASARS GENERAL//GALAXIES ACTIVE
9 9623 X RAYS BINARIES//X RAYS GALAXIES//BLACK HOLE PHYSICS
10 5275 GALAXIES HIGH REDSHIFT//GALAXIES EVOLUTION//GALAXIES FORMATION

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