Scimago Journal & Country Rank

Astrophysical Journal Letters

Country

United Kingdom

Universities and research institutions in United Kingdom

Subject Area and Category

Publisher

American Astronomical Society

H-Index

172

Publication type

Journals

ISSN

20418205, 20418213

Coverage

1991-1993, 1995-2021

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
Astronomy and Astrophysics2021Q1
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
Space and Planetary Science2021Q1
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
20212.636
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
20082
20094
2010758
2011749
2012669
2013654
2014670
2015621
2016577
2017545
2018575
2019630
2020730
2021651
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)20005.664
Cites / Doc. (4 years)20015.034
Cites / Doc. (4 years)20025.799
Cites / Doc. (4 years)20033.865
Cites / Doc. (4 years)20044.534
Cites / Doc. (4 years)200511.603
Cites / Doc. (4 years)200622.135
Cites / Doc. (4 years)200715.965
Cites / Doc. (4 years)200813.528
Cites / Doc. (4 years)20097.781
Cites / Doc. (4 years)20103.721
Cites / Doc. (4 years)20116.555
Cites / Doc. (4 years)20126.816
Cites / Doc. (4 years)20136.191
Cites / Doc. (4 years)20145.694
Cites / Doc. (4 years)20155.672
Cites / Doc. (4 years)20165.499
Cites / Doc. (4 years)20176.163
Cites / Doc. (4 years)20187.235
Cites / Doc. (4 years)20197.642
Cites / Doc. (4 years)20207.837
Cites / Doc. (4 years)20217.735
Cites / Doc. (3 years)19995.891
Cites / Doc. (3 years)20005.665
Cites / Doc. (3 years)20015.195
Cites / Doc. (3 years)20024.032
Cites / Doc. (3 years)20033.653
Cites / Doc. (3 years)20046.941
Cites / Doc. (3 years)200515.422
Cites / Doc. (3 years)200633.267
Cites / Doc. (3 years)200715.236
Cites / Doc. (3 years)20087.694
Cites / Doc. (3 years)20094.000
Cites / Doc. (3 years)20102.667
Cites / Doc. (3 years)20116.555
Cites / Doc. (3 years)20126.824
Cites / Doc. (3 years)20136.199
Cites / Doc. (3 years)20145.819
Cites / Doc. (3 years)20155.857
Cites / Doc. (3 years)20165.725
Cites / Doc. (3 years)20176.514
Cites / Doc. (3 years)20188.041
Cites / Doc. (3 years)20198.381
Cites / Doc. (3 years)20208.498
Cites / Doc. (3 years)20217.430
Cites / Doc. (2 years)19995.694
Cites / Doc. (2 years)20006.057
Cites / Doc. (2 years)20013.772
Cites / Doc. (2 years)20023.917
Cites / Doc. (2 years)20035.527
Cites / Doc. (2 years)20046.971
Cites / Doc. (2 years)200525.957
Cites / Doc. (2 years)200642.412
Cites / Doc. (2 years)20078.016
Cites / Doc. (2 years)20084.018
Cites / Doc. (2 years)20091.500
Cites / Doc. (2 years)20102.667
Cites / Doc. (2 years)20116.570
Cites / Doc. (2 years)20126.835
Cites / Doc. (2 years)20136.107
Cites / Doc. (2 years)20145.949
Cites / Doc. (2 years)20155.931
Cites / Doc. (2 years)20165.817
Cites / Doc. (2 years)20177.118
Cites / Doc. (2 years)20188.911
Cites / Doc. (2 years)20199.285
Cites / Doc. (2 years)20207.919
Cites / Doc. (2 years)20217.688
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 Cites2015700
Self Cites2016719
Self Cites2017806
Self Cites20181066
Self Cites20191110
Self Cites20201212
Self Cites20211066
Total Cites19991137
Total Cites20001303
Total Cites20011148
Total Cites2002629
Total Cites2003431
Total Cites2004472
Total Cites2005694
Total Cites2006998
Total Cites20071097
Total Cites2008477
Total Cites2009228
Total Cites201016
Total Cites20115008
Total Cites201210311
Total Cites201313488
Total Cites201412058
Total Cites201511673
Total Cites201611136
Total Cites201712168
Total Cites201814016
Total Cites201914223
Total Cites202014871
Total Cites202114377
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 document20005.630
External Cites per document20015.176
External Cites per document20024.019
External Cites per document20033.644
External Cites per document20046.926
External Cites per document200515.378
External Cites per document200633.267
External Cites per document200715.236
External Cites per document20087.694
External Cites per document20093.982
External Cites per document20102.500
External Cites per document20115.941
External Cites per document20126.369
External Cites per document20135.814
External Cites per document20145.411
External Cites per document20155.511
External Cites per document20165.361
External Cites per document20176.086
External Cites per document20187.430
External Cites per document20197.727
External Cites per document20207.805
External Cites per document20216.879
Cites per document19995.891
Cites per document20005.665
Cites per document20015.195
Cites per document20024.032
Cites per document20033.653
Cites per document20046.941
Cites per document200515.422
Cites per document200633.267
Cites per document200715.236
Cites per document20087.694
Cites per document20094.000
Cites per document20102.667
Cites per document20116.555
Cites per document20126.824
Cites per document20136.199
Cites per document20145.819
Cites per document20155.857
Cites per document20165.725
Cites per document20176.514
Cites per document20188.041
Cites per document20198.381
Cites per document20208.498
Cites per document20217.430
% 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
200850.00
200925.00
201059.50
201161.01
201259.64
201359.33
201461.04
201562.32
201661.70
201764.59
201864.35
201965.56
202061.78
202164.82
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
Non-citable documents20210
Citable documents1999193
Citable documents2000230
Citable documents2001221
Citable documents2002156
Citable documents2003118
Citable documents200468
Citable documents200545
Citable documents200630
Citable documents200772
Citable documents200862
Citable documents200957
Citable documents20106
Citable documents2011764
Citable documents20121511
Citable documents20132176
Citable documents20142071
Citable documents20151991
Citable documents20161943
Citable documents20171867
Citable documents20181743
Citable documents20191697
Citable documents20201750
Citable documents20211935
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 documents200183
Uncited documents200270
Uncited documents200369
Uncited documents200450
Uncited documents200538
Uncited documents200621
Uncited documents200724
Uncited documents200818
Uncited documents200917
Uncited documents20103
Uncited documents201158
Uncited documents201293
Uncited documents2013162
Uncited documents2014170
Uncited documents2015184
Uncited documents2016201
Uncited documents2017145
Uncited documents2018127
Uncited documents2019138
Uncited documents2020156
Uncited documents2021205
Cited documents1999148
Cited documents2000164
Cited documents2001138
Cited documents200286
Cited documents200349
Cited documents200418
Cited documents20057
Cited documents20069
Cited documents200748
Cited documents200844
Cited documents200940
Cited documents20103
Cited documents2011706
Cited documents20121418
Cited documents20132014
Cited documents20141902
Cited documents20151809
Cited documents20161744
Cited documents20171723
Cited documents20181616
Cited documents20191559
Cited documents20201594
Cited documents20211730
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