Scimago Journal & Country Rank

Astrophysical Journal Letters

Country

United Kingdom

Universities and research institutions in United Kingdom

Subject Area and Category

Publisher

IOP Publishing Ltd.

H-Index

201

Publication type

Journals

ISSN

20418205, 20418213

Coverage

1991-1993, 1995-2020

Information

Homepage

How to publish in this journal

Scope

The Astrophysical Journal Letters is the premier journal for rapid publication of high-impact astronomical research. ApJL publishes brief reports on the most influential developments across astronomy and astrophysics. The journal specializes in articles that are timely, containing new discoveries and results that have a significant immediate impact on other researchers. Articles published in ApJL are self-contained, including context that is generally understandable by scientists who are not specialists in the particular fields. Join the conversation about this journal
Quartiles

The set of journals have been ranked according to their SJR and divided into four equal groups, four quartiles. Q1 (green) comprises the quarter of the journals with the highest values, Q2 (yellow) the second highest values, Q3 (orange) the third highest values and Q4 (red) the lowest values.

CategoryYearQuartile
Astronomy and Astrophysics1999Q1
Astronomy and Astrophysics2000Q1
Astronomy and Astrophysics2001Q1
Astronomy and Astrophysics2002Q1
Astronomy and Astrophysics2003Q1
Astronomy and Astrophysics2004Q1
Astronomy and Astrophysics2005Q1
Astronomy and Astrophysics2006Q1
Astronomy and Astrophysics2007Q1
Astronomy and Astrophysics2008Q1
Astronomy and Astrophysics2009Q1
Astronomy and Astrophysics2010Q4
Astronomy and Astrophysics2011Q1
Astronomy and Astrophysics2012Q1
Astronomy and Astrophysics2013Q1
Astronomy and Astrophysics2014Q1
Astronomy and Astrophysics2015Q1
Astronomy and Astrophysics2016Q1
Astronomy and Astrophysics2017Q1
Astronomy and Astrophysics2018Q1
Astronomy and Astrophysics2019Q1
Astronomy and Astrophysics2020Q1
Space and Planetary Science1999Q1
Space and Planetary Science2000Q1
Space and Planetary Science2001Q1
Space and Planetary Science2002Q1
Space and Planetary Science2003Q1
Space and Planetary Science2004Q1
Space and Planetary Science2005Q1
Space and Planetary Science2006Q1
Space and Planetary Science2007Q1
Space and Planetary Science2008Q1
Space and Planetary Science2009Q1
Space and Planetary Science2010Q4
Space and Planetary Science2011Q1
Space and Planetary Science2012Q1
Space and Planetary Science2013Q1
Space and Planetary Science2014Q1
Space and Planetary Science2015Q1
Space and Planetary Science2016Q1
Space and Planetary Science2017Q1
Space and Planetary Science2018Q1
Space and Planetary Science2019Q1
Space and Planetary Science2020Q1
SJR

The SJR is a size-independent prestige indicator that ranks journals by their 'average prestige per article'. It is based on the idea that 'all citations are not created equal'. SJR is a measure of scientific influence of journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from It measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is.

YearSJR
19997.405
20007.118
20015.560
20026.859
20034.624
20044.703
20057.524
20069.499
20075.762
20083.101
20092.774
20100.105
20113.993
20123.561
20133.634
20143.404
20153.144
20162.822
20173.186
20183.864
20193.303
20203.639
Total Documents

Evolution of the number of published documents. All types of documents are considered, including citable and non citable documents.

YearDocuments
199960
200063
200133
200222
200313
200410
20057
200655
20070
20083
20094
2010758
2011752
2012669
2013654
2014670
2015619
2016577
2017545
2018575
2019631
2020730
Citations per document

This indicator counts the number of citations received by documents from a journal and divides them by the total number of documents published in that journal. The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year. The two years line is equivalent to journal impact factor ™ (Thomson Reuters) metric.

Cites per documentYearValue
Cites / Doc. (4 years)19995.891
Cites / Doc. (4 years)20005.660
Cites / Doc. (4 years)20015.051
Cites / Doc. (4 years)20025.815
Cites / Doc. (4 years)20033.860
Cites / Doc. (4 years)20044.603
Cites / Doc. (4 years)200511.551
Cites / Doc. (4 years)200621.923
Cites / Doc. (4 years)200715.776
Cites / Doc. (4 years)200813.347
Cites / Doc. (4 years)20097.615
Cites / Doc. (4 years)20103.661
Cites / Doc. (4 years)20116.515
Cites / Doc. (4 years)20126.738
Cites / Doc. (4 years)20136.102
Cites / Doc. (4 years)20145.623
Cites / Doc. (4 years)20155.442
Cites / Doc. (4 years)20165.350
Cites / Doc. (4 years)201710.980
Cites / Doc. (4 years)201812.701
Cites / Doc. (4 years)201913.943
Cites / Doc. (4 years)202014.008
Cites / Doc. (3 years)19995.891
Cites / Doc. (3 years)20005.661
Cites / Doc. (3 years)20015.213
Cites / Doc. (3 years)20024.058
Cites / Doc. (3 years)20033.653
Cites / Doc. (3 years)20047.074
Cites / Doc. (3 years)200515.378
Cites / Doc. (3 years)200632.967
Cites / Doc. (3 years)200715.083
Cites / Doc. (3 years)20087.613
Cites / Doc. (3 years)20093.931
Cites / Doc. (3 years)20102.286
Cites / Doc. (3 years)20116.515
Cites / Doc. (3 years)20126.751
Cites / Doc. (3 years)20136.109
Cites / Doc. (3 years)20145.734
Cites / Doc. (3 years)20155.639
Cites / Doc. (3 years)20165.572
Cites / Doc. (3 years)201711.551
Cites / Doc. (3 years)201814.254
Cites / Doc. (3 years)201915.324
Cites / Doc. (3 years)202015.160
Cites / Doc. (2 years)19995.694
Cites / Doc. (2 years)20006.063
Cites / Doc. (2 years)20013.764
Cites / Doc. (2 years)20023.958
Cites / Doc. (2 years)20035.527
Cites / Doc. (2 years)20046.971
Cites / Doc. (2 years)200525.870
Cites / Doc. (2 years)200642.000
Cites / Doc. (2 years)20077.952
Cites / Doc. (2 years)20083.964
Cites / Doc. (2 years)20091.000
Cites / Doc. (2 years)20102.286
Cites / Doc. (2 years)20116.538
Cites / Doc. (2 years)20126.762
Cites / Doc. (2 years)20136.002
Cites / Doc. (2 years)20145.870
Cites / Doc. (2 years)20155.713
Cites / Doc. (2 years)20165.665
Cites / Doc. (2 years)201712.702
Cites / Doc. (2 years)201815.929
Cites / Doc. (2 years)201917.065
Cites / Doc. (2 years)202014.119
Total Cites 
Self-Cites

Evolution of the total number of citations and journal's self-citations received by a journal's published documents during the three previous years.
Journal Self-citation is defined as the number of citation from a journal citing article to articles published by the same journal.

CitesYearValue
Self Cites19998
Self Cites20008
Self Cites20014
Self Cites20022
Self Cites20031
Self Cites20041
Self Cites20052
Self Cites20060
Self Cites20070
Self Cites20080
Self Cites20091
Self Cites20101
Self Cites2011469
Self Cites2012687
Self Cites2013836
Self Cites2014851
Self Cites2015695
Self Cites2016716
Self Cites2017806
Self Cites20181066
Self Cites20191109
Self Cites20201206
Total Cites19991137
Total Cites20001302
Total Cites20011152
Total Cites2002633
Total Cites2003431
Total Cites2004481
Total Cites2005692
Total Cites2006989
Total Cites20071086
Total Cites2008472
Total Cites2009228
Total Cites201016
Total Cites20114984
Total Cites201210221
Total Cites201313311
Total Cites201411898
Total Cites201511238
Total Cites201610827
Total Cites201721555
Total Cites201824817
Total Cites201926005
Total Cites202026546
External Cites per Doc 
Cites per Doc

Evolution of the number of total citation per document and external citation per document (i.e. journal self-citations removed) received by a journal's published documents during the three previous years. External citations are calculated by subtracting the number of self-citations from the total number of citations received by the journal’s documents.

CitesYearValue
External Cites per document19995.850
External Cites per document20005.626
External Cites per document20015.195
External Cites per document20024.045
External Cites per document20033.644
External Cites per document20047.059
External Cites per document200515.333
External Cites per document200632.967
External Cites per document200715.083
External Cites per document20087.613
External Cites per document20093.914
External Cites per document20102.143
External Cites per document20115.902
External Cites per document20126.297
External Cites per document20135.725
External Cites per document20145.326
External Cites per document20155.295
External Cites per document20165.209
External Cites per document201711.125
External Cites per document201813.642
External Cites per document201914.671
External Cites per document202014.472
Cites per document19995.891
Cites per document20005.661
Cites per document20015.213
Cites per document20024.058
Cites per document20033.653
Cites per document20047.074
Cites per document200515.378
Cites per document200632.967
Cites per document200715.083
Cites per document20087.613
Cites per document20093.931
Cites per document20102.286
Cites per document20116.515
Cites per document20126.751
Cites per document20136.109
Cites per document20145.734
Cites per document20155.639
Cites per document20165.572
Cites per document201711.551
Cites per document201814.254
Cites per document201915.324
Cites per document202015.160
% International Collaboration

International Collaboration accounts for the articles that have been produced by researchers from several countries. The chart shows the ratio of a journal's documents signed by researchers from more than one country; that is including more than one country address.

YearInternational Collaboration
199946.67
200047.62
200139.39
200245.45
200330.77
200430.00
200571.43
200645.45
20070
200833.33
200925.00
201059.50
201161.17
201259.64
201359.33
201461.04
201562.20
201661.70
201764.59
201864.35
201965.61
202061.92
Citable documents 
Non-citable documents

Not every article in a journal is considered primary research and therefore "citable", this chart shows the ratio of a journal's articles including substantial research (research articles, conference papers and reviews) in three year windows vs. those documents other than research articles, reviews and conference papers.

DocumentsYearValue
Non-citable documents19990
Non-citable documents20000
Non-citable documents20010
Non-citable documents20020
Non-citable documents20030
Non-citable documents20040
Non-citable documents20050
Non-citable documents20060
Non-citable documents20070
Non-citable documents20080
Non-citable documents20090
Non-citable documents20100
Non-citable documents20110
Non-citable documents20120
Non-citable documents20130
Non-citable documents20141
Non-citable documents20152
Non-citable documents20162
Non-citable documents20171
Non-citable documents20180
Non-citable documents20190
Non-citable documents20200
Citable documents1999193
Citable documents2000230
Citable documents2001221
Citable documents2002156
Citable documents2003118
Citable documents200468
Citable documents200545
Citable documents200630
Citable documents200772
Citable documents200862
Citable documents200958
Citable documents20107
Citable documents2011765
Citable documents20121514
Citable documents20132179
Citable documents20142074
Citable documents20151991
Citable documents20161941
Citable documents20171865
Citable documents20181741
Citable documents20191697
Citable documents20201751
Cited documents 
Uncited documents

Ratio of a journal's items, grouped in three years windows, that have been cited at least once vs. those not cited during the following year.

DocumentsYearValue
Uncited documents199945
Uncited documents200066
Uncited documents200184
Uncited documents200270
Uncited documents200369
Uncited documents200450
Uncited documents200538
Uncited documents200621
Uncited documents200724
Uncited documents200818
Uncited documents200918
Uncited documents20104
Uncited documents201159
Uncited documents201297
Uncited documents2013166
Uncited documents2014176
Uncited documents2015193
Uncited documents2016208
Uncited documents2017115
Uncited documents201894
Uncited documents2019112
Uncited documents2020125
Cited documents1999148
Cited documents2000164
Cited documents2001137
Cited documents200286
Cited documents200349
Cited documents200418
Cited documents20057
Cited documents20069
Cited documents200748
Cited documents200844
Cited documents200940
Cited documents20103
Cited documents2011706
Cited documents20121417
Cited documents20132013
Cited documents20141899
Cited documents20151800
Cited documents20161735
Cited documents20171751
Cited documents20181647
Cited documents20191585
Cited documents20201626
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