The International Cosmic Ray Conference, or ICRC, is a

physics Physics is the scientific study of matter, its Elementary particle, fundamental constituents, its motion and behavior through space and time, and the related entities of energy and force. "Physical science is that department of knowledge whi ...

conference organized biennially by th
Commission C4 (Astroparticle Physics)
of the

International Union of Pure and Applied Physics The International Union of Pure and Applied Physics (IUPAP; ) is an international non-governmental organization whose mission is to assist in the worldwide development of physics, to foster international cooperation in physics, and to help in the ...

(IUPAP) since 1947, where physicists from the whole world present the results of their research in

Astroparticle Physics Astroparticle physics, also called particle astrophysics, is a branch of particle physics that studies elementary particles of astrophysical origin and their relation to astrophysics and cosmology. It is a relatively new field of research emergi ...

. The main topics of

are *

Cosmic Ray Cosmic rays or astroparticles are high-energy particles or clusters of particles (primarily represented by protons or atomic nuclei) that move through space at nearly the speed of light. They originate from the Sun, from outside of the ...

Physics, *

Gamma-Ray Astronomy Gamma-ray astronomy is a subfield of astronomy where scientists observe and study celestial objects and phenomena in outer space which emit cosmic electromagnetic radiation in the form of gamma rays,Astronomical literature generally hyphena ...

, *

Neutrino Astronomy Neutrino astronomy is a branch of astronomy that gathers information about astronomical objects by observing and studying neutrinos emitted by them with the help of neutrino detectors in special Earth observatories. It is an emerging field in as ...

, *

Dark Matter In astronomy, dark matter is an invisible and hypothetical form of matter that does not interact with light or other electromagnetic radiation. Dark matter is implied by gravity, gravitational effects that cannot be explained by general relat ...

Physics, * Multi-Messenger Astrophysics, *Solar and Heliospheric Physics, *Astroparticle Physics Theory and Models, *Experimental Methods, Techniques and Instrumentation and *Outreach & Education in Astroparticle Physics. As part of the opening ceremonies, The O'Ceallaigh Medal is presented to a researcher who has made distinguished contributions to Cosmic Ray Physics.O’Ceallaigh Medal
Dublin Institute for Advanced Studies Also, the Yodh Prize and the Bhabha Medal and Prize are awarded to senior members of the community. For young researchers, the Shakti Duggal Award and two IUPAP Young Scientist Awards are presented at each ICRCs. Proceedings are published for each conference. Some are, partially or in full, available online (see external links). The

NASA The National Aeronautics and Space Administration (NASA ) is an independent agencies of the United States government, independent agency of the federal government of the United States, US federal government responsible for the United States ...

Astrophysics Data System The SAO/NASA Astrophysics Data System (ADS) is a digital library portal for researchers on astronomy and physics, operated for NASA by the Smithsonian Astrophysical Observatory. ADS maintains three bibliographic collections containing over 15 ...

(ADS) has started to gather these proceedings and publish them online on the ADS webserver.

List of ICRCs

* 40th ICRC : 2027,

Buenos Aires Buenos Aires, controlled by the government of the Autonomous City of Buenos Aires, is the Capital city, capital and largest city of Argentina. It is located on the southwest of the Río de la Plata. Buenos Aires is classified as an Alpha− glob ...

, Argentina * 39th ICRC : July 15–24, 2025,

Geneva Geneva ( , ; ) ; ; . is the List of cities in Switzerland, second-most populous city in Switzerland and the most populous in French-speaking Romandy. Situated in the southwest of the country, where the Rhône exits Lake Geneva, it is the ca ...

, Switzerland
webpage
* 38th ICRC : July 26 – August 3, 2023,

Nagoya is the largest city in the Chūbu region of Japan. It is the list of cities in Japan, fourth-most populous city in Japan, with a population of 2.3million in 2020, and the principal city of the Chūkyō metropolitan area, which is the List of ...

, Japan
webpage
* 37th ICRC : July 12–23, 2021,

Berlin Berlin ( ; ) is the Capital of Germany, capital and largest city of Germany, by both area and List of cities in Germany by population, population. With 3.7 million inhabitants, it has the List of cities in the European Union by population withi ...

, online conference, Germany
webpage
* 36th ICRC : July 25 – August 1, 2019, Madison, United States
webpage
* 35th ICRC : July 12–20, 2017,

Busan Busan (), officially Busan Metropolitan City, is South Korea's second list of cities in South Korea by population, most populous city after Seoul, with a population of over 3.3 million as of 2024. Formerly romanized as Pusan, it is the economi ...

, South Korea () * 34th ICRC : July 30 – August 6, 2015,

The Hague The Hague ( ) is the capital city of the South Holland province of the Netherlands. With a population of over half a million, it is the third-largest city in the Netherlands. Situated on the west coast facing the North Sea, The Hague is the c ...

, Netherland
(webpage)
* 33rd ICRC : July 2–9, 2013,

Rio de Janeiro Rio de Janeiro, or simply Rio, is the capital of the Rio de Janeiro (state), state of Rio de Janeiro. It is the List of cities in Brazil by population, second-most-populous city in Brazil (after São Paulo) and the Largest cities in the America ...

, Brazil
webpage
* 32nd ICRC : August 11–18, 2011,

Beijing Beijing, Chinese postal romanization, previously romanized as Peking, is the capital city of China. With more than 22 million residents, it is the world's List of national capitals by population, most populous national capital city as well as ...

, China
webpage
* 31st ICRC : July 7–15, 2009,

Łódź Łódź is a city in central Poland and a former industrial centre. It is the capital of Łódź Voivodeship, and is located south-west of Warsaw. Łódź has a population of 655,279, making it the country's List of cities and towns in Polan ...

, Poland
webpage
) * 30th ICRC : July 3–11, 2007, Mérida, Mexico
webpage
* 29th ICRC : August 3–10, 2005,

Pune Pune ( ; , ISO 15919, ISO: ), previously spelled in English as Poona (List of renamed Indian cities and states#Maharashtra, the official name until 1978), is a city in the state of Maharashtra in the Deccan Plateau, Deccan plateau in Western ...

, India
webpage
* 28th ICRC : July 31 – August 7, 2003

Tsukuba is a city located in Ibaraki Prefecture, Japan. As of January 1, 2024, the city had an estimated population of 256,526 in 121,001 households and a population density of 900 persons per km2. The percentage of the population aged over 65 wa ...

, Japan
webpage
* 27th ICRC : August 8–15, 2001,

Hamburg Hamburg (, ; ), officially the Free and Hanseatic City of Hamburg,. is the List of cities in Germany by population, second-largest city in Germany after Berlin and List of cities in the European Union by population within city limits, 7th-lar ...

, Germany
webpage
* 26th ICRC : 1999,

Salt Lake City Salt Lake City, often shortened to Salt Lake or SLC, is the capital and most populous city of the U.S. state of Utah. It is the county seat of Salt Lake County, the most populous county in the state. The city is the core of the Salt Lake Ci ...

, United States * 25th ICRC : 1997,

Durban Durban ( ; , from meaning "bay, lagoon") is the third-most populous city in South Africa, after Johannesburg and Cape Town, and the largest city in the Provinces of South Africa, province of KwaZulu-Natal. Situated on the east coast of South ...

, South Africa * 24th ICRC : 28 August – 8 September 1995,

Rome Rome (Italian language, Italian and , ) is the capital city and most populated (municipality) of Italy. It is also the administrative centre of the Lazio Regions of Italy, region and of the Metropolitan City of Rome. A special named with 2, ...

, Italy
webpage
* 23rd ICRC : 1993,

Calgary Calgary () is a major city in the Canadian province of Alberta. As of 2021, the city proper had a population of 1,306,784 and a metropolitan population of 1,481,806 making it the third-largest city and fifth-largest metropolitan area in C ...

, Canada * 22nd ICRC : 1991,

Dublin Dublin is the capital and largest city of Republic of Ireland, Ireland. Situated on Dublin Bay at the mouth of the River Liffey, it is in the Provinces of Ireland, province of Leinster, and is bordered on the south by the Dublin Mountains, pa ...

, Ireland * 21st ICRC : 1990,

Adelaide Adelaide ( , ; ) is the list of Australian capital cities, capital and most populous city of South Australia, as well as the list of cities in Australia by population, fifth-most populous city in Australia. The name "Adelaide" may refer to ei ...

, Australia * 20th ICRC : 1987,

Moscow Moscow is the Capital city, capital and List of cities and towns in Russia by population, largest city of Russia, standing on the Moskva (river), Moskva River in Central Russia. It has a population estimated at over 13 million residents with ...

, USSR * 19th ICRC : 1985,

La Jolla La Jolla ( , ) is a hilly, seaside neighborhood in San Diego, California, occupying of curving coastline along the Pacific Ocean. The population reported in the 2010 census was 46,781. The climate is mild, with an average daily temperature o ...

, United States * 18th ICRC : 1983,

Bangalore Bengaluru, also known as Bangalore (List of renamed places in India#Karnataka, its official name until 1 November 2014), is the Capital city, capital and largest city of the southern States and union territories of India, Indian state of Kar ...

, India * 17th ICRC : 1981,

Paris Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than , Paris is the List of ci ...

, France * 16th ICRC : 1979,

Kyoto Kyoto ( or ; Japanese language, Japanese: , ''Kyōto'' ), officially , is the capital city of Kyoto Prefecture in the Kansai region of Japan's largest and most populous island of Honshu. , the city had a population of 1.46 million, making it t ...

, Japan * 15th ICRC : 1977,

Plovdiv Plovdiv (, ) is the List of cities and towns in Bulgaria, second-largest city in Bulgaria, 144 km (93 miles) southeast of the capital Sofia. It had a population of 490,983 and 675,000 in the greater metropolitan area. Plovdiv is a cultural hub ...

, Bulgaria * 14th ICRC : 1975,

Munich Munich is the capital and most populous city of Bavaria, Germany. As of 30 November 2024, its population was 1,604,384, making it the third-largest city in Germany after Berlin and Hamburg. Munich is the largest city in Germany that is no ...

, West Germany * 13th ICRC : 1973,

Denver Denver ( ) is a List of municipalities in Colorado#Consolidated city and county, consolidated city and county, the List of capitals in the United States, capital and List of municipalities in Colorado, most populous city of the U.S. state of ...

, United States * 12th ICRC : 1971,

Hobart Hobart ( ) is the capital and most populous city of the island state of Tasmania, Australia. Located in Tasmania's south-east on the estuary of the River Derwent, it is the southernmost capital city in Australia. Despite containing nearly hal ...

, Australia * 11th ICRC : 1969,

Budapest Budapest is the Capital city, capital and List of cities and towns of Hungary, most populous city of Hungary. It is the List of cities in the European Union by population within city limits, tenth-largest city in the European Union by popul ...

, Hungary * 10th ICRC : 1967,

, Canada * 9th ICRC : 1965,

London London is the Capital city, capital and List of urban areas in the United Kingdom, largest city of both England and the United Kingdom, with a population of in . London metropolitan area, Its wider metropolitan area is the largest in Wester ...

, United Kingdom * 8th ICRC : 1963,

Jaipur Jaipur (; , ) is the List of state and union territory capitals in India, capital and the List of cities and towns in Rajasthan, largest city of the north-western States and union territories of India, Indian state of Rajasthan. , the city had ...

, India * 7th ICRC : 1961,

, Japan * 6th ICRC : 1959,

, USSR * 5th ICRC : 1957,

Varenna Varenna (Comasco, Lecchese: ) is a ''comune'' (municipality) on Lake Como in the Province of Lecco in the Italian region of Lombardy, located about north of Milan and about northwest of Lecco. Varenna was founded by local fishermen in AD 769 a ...

, Italy * 4th ICRC : 1955,

Guanajuato Guanajuato, officially the Free and Sovereign State of Guanajuato, is one of the 32 states that make up the Political divisions of Mexico, Federal Entities of Mexico. It is divided into Municipalities of Guanajuato, 46 municipalities and its cap ...

, Mexico * 3rd ICRC : 1953,

Bagnères-de-Bigorre Bagnères-de-Bigorre (, literally ''Bagnères of Bigorre''; ) is a Communes of France, commune and Subprefectures in France, subprefecture of the Hautes-Pyrénées Departments of France, Department in the Occitania (administrative region), Occita ...

, France * 2nd ICRC : 1949,

Como Como (, ; , or ; ) is a city and (municipality) in Lombardy, Italy. It is the administrative capital of the Province of Como. Nestled at the southwestern branch of the picturesque Lake Como, the city is a renowned tourist destination, ce ...

, Italy * 1st ICRC : 1947,

Kraków , officially the Royal Capital City of Kraków, is the List of cities and towns in Poland, second-largest and one of the oldest cities in Poland. Situated on the Vistula River in Lesser Poland Voivodeship, the city has a population of 804,237 ...

, Poland

References

External links

ICRC proceedings
on the ADS website
ICRC List
on SPIRES

to the online available proceedings Physics conferences {{Physics-org-stub IUPAP