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Variations in the Inferred Cosmic-Ray Spectral Index as Measured by Neutron Monitors in Antarctica Astrophysical Journal, 2025 (Ref: 17374)
Authors:
Muangha P.Ruffolo D.Sáiz A.Banglieng C.Evenson P.Seunarine S.Oh S.Jung J.Duldig M.Humble J.
Category 1: Peer-reviewed literature

A technique has recently been developed for tracking short-term spectral variations in Galactic cosmic rays (GCRs) using data from a single neutron monitor (NM)…

Global Analysis of the Extended Decreases in Cosmic Rays Observed with Worldwide Networks of Neutron Monitors and Muon Detectors: Temporal Variation of the Rigidity Spectrum and Its Implication Astrophysical Journal, 2025 (Ref: 17375)
Authors:
Munakata K.Hayashi Y.Kozai M.Kato C.Miyashita N.Kataoka R.Kadokura A.Miyake S.Iwai K.Echer E.Dal Lago A.Rockenbach M.Schuch N.J.Bageston J.V.Braga C.R.Al Jassaar H.K.Sharma M.M.Duldig M.L.Humble J.E.Sabbah I.Evenson P.Kuwabara T.Kóta J.
Category 1: Peer-reviewed literature

This paper presents the global analysis of two extended decreases in the galactic cosmic-ray intensity observed by worldwide networks of ground-based detectors in 2012. This analysis is capable of separately deriving the cosmic-ray density (or omnidirectional intensity) and anisotropy…

Anisotropic Forbush decrease of 24 March 2024: First look Advances in Space Research, 2024 (Ref: 17376)
Authors:
Mishev A.Larsen N.Asvestari E.Sáiz A.Shea M.A.Strauss D.Ruffolo D.Banglieng C.Seunarine S.Duldig M.L.Gil A.Blanco J.J.García-Población O.Cervino-Solana P.Adams Jr J.H.Usoskin I.
Category 1: Peer-reviewed literature

Ground-based Observations of Temporal Variation of the Cosmic-Ray Spectrum during Forbush Decreases The Astrophysical Journal Letters, 2025 (Ref: 17354)
Authors:
Mitthumsiri W.Ruffolo D.Munakata K.Kozai M.Hayashi Y.Kato C.Muangha P.Sáiz A.Evensor P.Mangeard P.-S. Clem J.Seunarine S.Nuntiyakul W.Miyashita N.Kataoka R.Kadokura A.Miyake S.Iwai K.Menjo H.Echer E.Dal Lago A.Rockenbach M.Schuch N.J.Bageston J.V.Braga C.R.Al Jassar H.K.Sharma M.M.Burahmah N.Zaman F.Duldig M.L.Sabbah I.Kuwabara T.
Category 1: Peer-reviewed literature

Observations of temporary Forbush decreases (FDs) in the Galactic cosmic-ray (GCR) flux due to the passage of solar storms are useful for space-weather studies and alerts. Here…

Monte Carlo Simulation of the Neutron Monitor and Position-Dependent Bare Neutron Counter Yield Functions at Mawson Station, Antarctica 38th International Cosmic Ray Conference, 2024 (Ref: 17183)
Authors:
Madlee S.Ruffolo D.Sáiz A.Muangha P.Nuntiyakul W.Seripienlert A.Mangeard P.S.Duldig M.L.Humble J.
Category 3: Conference paper

Neutron monitors (NMs) are ground-based detectors that are widely used to detect secondary particles produced by the collisions of primary cosmic rays (CRs) and air molecules in the Earth's atmosphere. Bare neutron counters (BCs), operated without the lead producer and polyethylene reflector…

Cross-counter time-delay distributions at the Mawson neutron monitor Proceedings of 38th International Cosmic Ray Conference, 2024 (Ref: 17184)
Authors:
Sáiz A.Ruffolo D.Sukha T.Muangha P.Mitthumsiri W.Chaiwongkhot K.Nuntiyakul W.Somboon E.Evenson P.Duldig M.Humble J.
Category 3: Conference paper

For decades, neutron monitors have been the primary source of ground-level data for studying cosmic rays with rigidities slightly above the geomagnetic cutoff. The NM64 instrument design, the standard for neutron monitors, has been optimized to monitor neutrons produced in atmospheric cascades.

Solar Magnetic Polarity Effect on Neutron Monitor Count Rates: Comparing Latitude Surveys and Antarctic Stations Proceedings of 38th International Cosmic Ray Conference, 2024 (Ref: 17182)
Authors:
Poopakun K.Nuntiyakul W.Khamphakdee S.Seripienlert A.Ruffolo D.J.Evenson P.Peng J.Chuanraksasat P.Munakata K.Duldig M.Humble J.Madsen J.Soonthornthum B.Komonjinda S.
Category 3: Conference paper

The Galactic cosmic ray spectrum manifests pronounced variations over the 11-year sunspot cycle and more subtle variations over the 22-year solar magnetic cycle.

Solar Magnetic Polarity Effect on Neutron Monitor Count Rates: Comparing Latitude Surveys and Antarctic Stations 2023 Fall Meeting of the American Geophysical Union, 2024 (Ref: 17181)
Authors:
Poopakun K.Nuntiyakul W.Khamphakdee S.Seripienlert A.Ruffolo D.J.Evenson P.E.Munakata K.Jiang P.Chuanraksasat P.Duldig M.L.Humble J.E.Madsen J.Soonthornthum B.Komonjinda S.
Category 3: Verbal presentation

The Galactic cosmic ray spectrum manifests pronounced variations over the 11-year sunspot cycle and more subtle variations over the 22-year solar magnetic cycle.

Solar Magnetic Polarity Effect on Neutron Monitor Count Rates: Comparing Latitude Surveys and Antarctic Stations. The Astrophysical Journal, 2023 (Ref: 17146)
Authors:
Poopakun K.Nuntiyakul W.Khamphakdee S.Seripienlert A.Ruffolo D.Evenson P.Jiang P.Chuanraksasat K.Munakata K.Duldig M.L.Humble J.E.Madsen J.Soonthornthum B.Komonjinda S.
Category 1: Peer-reviewed literature

The Galactic cosmic-ray spectrum manifests pronounced variations over the 11 yr sunspot cycle and more subtle variations over the 22 yr solar magnetic cycle. An important tool to study these variations is repeated latitude surveys with neutron monitors (NMs)…

Analysis of Cosmic Rays' Atmospheric Effects and Their Relationships to Cutoff Rigidity and Zenith Angle Using Global Muon Detector Network Data Journal of Geophysical Research - Space Physics, 2019 (Ref: 16881)
Authors:
Mendonca R.R.S.Wang C.Braga C.R.Echer E.Dal Lago A.Costa J.E.R.Munakata K.Li H.Liu Z.Raulin J.-P Kuwabara T.Kozai M.Kato C.Rockenbach M.Schuch N.J.Al Jassar H.K.Sharma M.M.Tokumaru M.Duldig M.L.Humble J.E.Evenson P.Sabbah I.
Category 1: Peer-reviewed literature

Cosmic rays are charged particles whose flux observed at Earth shows temporal variations related to space weather phenomena and may be an important tool to study them. The cosmic ray intensity recorded with ground-based detectors also shows temporal variations arising from atmospheric variations.

Ionospheric observation using FM-CW radar array. Advance in Geoscience: Solar Terrestrial, 2010 (Ref: 14917)
Authors:
Ikeda A.Yoshikawa A.Cardinal M.G.Yumoto K.Shinohara M.Nozaki K.Shevtsov B.M.Bychknov V.V.Sugon Jr Q.M.McNamara D.
Category 1: Peer-reviewed literature

First observed coronal mass ejection from the Middle East using cosmic rays. Kuwait Journal of Science and Engineering, 2010 (Ref: 14333)
Authors:
Sabbah I.Tokumaru M.Duldig M.L.Schuch N.J.
Category 1: Peer-reviewed literature

High Resolution Modelling of Stratospheric Chemistry Changes During Large Solar Proton Events. Poster, 19th Australian Institute of Physics Congress, 5-9 December 2010, 2010 (Ref: 14283)
Authors:
Duldig M.L.Klekociuk A.R.Bombardieri D.J.Michael K.J.
Category 3: Poster

Observations of Forbush Decrease Precursors on 14 December 2006. 19th Australian Institute of Physics Congress, 5-9 December 2010, 2010 (Ref: 14284)
Authors:
Fushishita A.Kuwabara T.Kato C.Yasue S.Bieber J.W.Evenson P.Da Silva M.R.Dal Lago A.Schuch N.J.Tokumaru M.Duldig M.L.Humble J.E.Sabbah I.Al Jassar H.K.Sharma M.M.Munakata K.
Category 3: Abstract

Cosmic Ray Flux at the Recent Solar Minimum. Session 3F, 19th Australian Institute of Physics Congress, 5-9 December 2010 Extended Abstracts CD., 2010 (Ref: 14281)
Authors:
Humble J.E.Duldig M.
Category 3: Abstract

After an unusually (for recent solar cycles) long absence, sunspots of solar cycle 24 started to appear late in 2009. Cosmic ray activity monitored at Earth has an inverse … relationship with the sunspot cycle, being maximum at solar … minimum.

Bullets from the Sun: A Review of Relativistic Solar Cosmic Rays. Session 3F, 19th Australian Institute of Physics Congress, 5-9 December 2010 Extended Abstracts CD., 2010 (Ref: 14280)
Authors:
Duldig M.
Category 3: Abstract

Cosmic rays generally come from beyond the solar system but rarely they can come from the Sun. This review discusses the solar source, propagation to Earth and impact of highly relativistic solar protons.

The 10Be solar activity proxy in ice from Law Dome, Antarctica: Intercomparison of observed and general-circulation-modelled data. Poster, 19th Australian Institute of Physics Congress, 5-9 December 2010, 2010 (Ref: 14282)
Authors:
Pedro J.Heikkilä U.Smith A.van Ommen T.Duldig M.
Category 3: Poster

10Be in Antarctic ice: Solar activity and climate signals observed and GCM-modelled at high resolution. Astronomical Society of Australia Annual Science Meeting 2010, Hobart, 5-8 July, 2010 (Ref: 14166)
Authors:
Pedro J.B.Heikkilä U.E.Smith A.M.van Ommen T.D.Duldig M.L.
Category 3: Poster

Changes in solar activity modulate the galactic cosmic ray flux, and in turn, the production rate of cosmogenic 10Be in the Earth’s atmosphere. The best archives of past changes in 10Be production rate are polar ice cores.

Global Muon Detector Network – GMDN and the Space Situational Awareness Conference Abstracts, Cospar 2010, 38th Scientific Assembly, 18-25 July 2010, Bremen, Germany, Paper, 2010 (Ref: 14192)
Authors:
Schuch N.J.Munakata K.Dal Lago A.Echer E.Gonzalez W.D.Da Silva M.R.Rigozo N.R.Petry A.Pinheiro D.K.Braga C.R.Silveira M.V.D.Stekel T.R.C.Antunes C.E.Kemmerlich N.Kato C.Fushishita A.Fujii Z.Bieber J.Evenson P.Kuwubara T.Duldig M.L.Humble J.E.Chilingarian A.Sabbah I.Jansen F.
Category 3: Abstract

Space weather forecasting is a very important tool for the space situational awareness to the space objects, the space environment and related threats and risks for manned and non-manned spacecrafts. The global network of ground based multi-directional detectors (GMDN)…

Global Muon Detector Network Observing Geomagnetic Storm's Precursor since March 2001 Conference Abstracts, Cospar 2010, 38th Scientific Assembly, 18-25 July 2010, Bremen, Germany, Paper, 2010 (Ref: 14191)
Authors:
Da Silva M.R.Dal Lago A.Gonzalez W.D.Munakata K.Fushishita A.Kuwubara T.Bieber J.Schuch N.J.Duldig M.L.Humble J.E.Sabbah I.
Category 3: Abstract

We use complementary observations from the prototype Global Muon Detector Network (GMDN) and the Advanced Composition Explorer satellite to identify precursors of geomagnetic storm events. The GMDN was completed in March 2006 with the installation of the Kuwait detector…

Observation of Forbush Decrease Precursors on 2006 December 14 with the Global Muon Detector Network Astronomical Society of Australia Annual Science Meeting 2010, Hobart, 5-8 July, 2010 (Ref: 14165)
Authors:
Duldig M.Fushishita A.Kuwabara T.Kato C.Yasue S.Bieber J.W.Evenson P.Da Silva M.R.Dal Lago A.Schuch N.J.Tokumaru M.Humble J.E.Sabbah I.Al Jassar H.K.Sharma M.M.Munakata K.
Category 3: Abstract

We analyse the precursor of a Forbush decrease (FD) observed with the Global Muon Detector Network on 2006 December 14. An intense geomagnetic storm was also recorded during this FD with the peak Kp index of 8+.

Hydroxyl response in the lower polar stratosphere during the 2005 Jan 20 Ground Level Enhancement Astronomical Society of Australia Annual Science Meeting 2010, Hobart, 5-8 July, 2010 (Ref: 14167)
Authors:
Klekociuk A.R.Duldig M.L.Bombardieri D.J.Michael K.J.
Category 3: Poster

We evaluate atmospheric ionization during the Ground Level Enhancement (GLE) of 2005 Jan 20 using the continuous slowing down (CSD) energy loss approximation [1,2]. The top-of-atmosphere particle flux is derived using satellite measurements (for particle energies below 500MeV)…

Advances in Geosciences, Volume 21: Solar Terrestrial (ST) , 2010 (Ref: 14150)
Authors:
Ip W-H.Duldig M.L. (Eds)
Category 5: Book series

Sky-Maps of the Sidereal Anisotropy of Galactic Cosmic Ray Intensity and its Energy Dependence Advances in Geosciences, Vol 21: Solar Terrestrial (ST), 2010 (Ref: 14152)
Authors:
Munakata K.Matsumoto N.Yasue S.Kato C.Mori S.Takita M.Duldig M.L.Humble J.E.Kóta J.
Category 1: Peer-reviewed literature

Drift Effects and the Average Features of Cosmic Ray Density Gradient in CIRS During Successive Two Solar Minimum Periods Advances in Geosciences, Vol 21: Solar Terrestrial (ST), 2010 (Ref: 14151)
Authors:
Fushishita A.Narumi T.Kato C.Yasue S.Munakata K.Okazaki Y.Kuwabara T.Bieber J.W.Evenson P.Da Silva M.R.Dal Lago A.Schuch N.J.Tokumaru M.Duldig M.L.Humble J.E.Sabbah I.Kóta J.
Category 1: Peer-reviewed literature

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