Hydrogen line (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Hydrogen line" in English language version.

refsWebsite

Global rank English rank

24doi.org

2^nd place

23harvard.edu

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12semanticscholar.org

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11arxiv.org

69^th place

59^th place

5nih.gov

4^th place

2worldcat.org

5^th place

1nist.gov

355^th place

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1scitation.org

4,352^nd place

3,229^th place

1leapsecond.com

low place

1jstor.org

26^th place

20^th place

1thenauticalalmanac.com

low place

1books.google.com

3^rd place

1iop.org

1,725^th place

1,828^th place

1planetary.org

5,100^th place

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1archive.org

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1n-t.ru

low place

archive.org

Basalla, George (2006). Civilized Life in the Universe. Oxford University Press. pp. 133–135. ISBN 978-0-19-517181-5.

arxiv.org

Mhaske, Ashish A.; et al. (August 2022). "A Bose horn antenna radio telescope (BHARAT) design for 21 cm hydrogen line experiments for radio astronomy teaching". American Journal of Physics. 90 (12): 948–960. arXiv:2208.06070. doi:10.1119/5.0065381.
Nusser, Adi (May 2005). "The spin temperature of neutral hydrogen during cosmic pre-reionization". Monthly Notices of the Royal Astronomical Society. 359 (1): 183–190. arXiv:astro-ph/0409640. Bibcode:2005MNRAS.359..183N. doi:10.1111/j.1365-2966.2005.08894.x. S2CID 11547883.
Pritchard, Jonathan R.; Loeb, Abraham (August 2012). "21 cm cosmology in the 21st century". Reports on Progress in Physics. 75 (8): 086901. arXiv:1109.6012. Bibcode:2012RPPh...75h6901P. doi:10.1088/0034-4885/75/8/086901. PMID 22828208. S2CID 41341641. 086901.
Drinkwater, M. J.; Webb, J. K–; Barrow, J. D.; Flambaum, V. V. (April 1998). "New limits on the possible variation of physical constants". Monthly Notices of the Royal Astronomical Society. 295 (2): 457–462. arXiv:astro-ph/9711290. Bibcode:1998MNRAS.295..457D. doi:10.1046/j.1365-8711.1998.2952457.x. S2CID 5938714.
Peters, Wendy M.; et al. (January 2011). "Radio Recombination Lines at Decameter Wavelengths: Prospects for the Future". Astronomy & Astrophysics. 525. arXiv:1010.0292. Bibcode:2011A&A...525A.128P. doi:10.1051/0004-6361/201014707. S2CID 53582482. A128.
Fialkov, A.; Loeb, A. (November 2013). "The 21-cm Signal from the cosmological epoch of recombination". Journal of Cosmology and Astroparticle Physics. 2013 (11): 066. arXiv:1311.4574. Bibcode:2013JCAP...11..066F. doi:10.1088/1475-7516/2013/11/066. S2CID 250754168. 066.
Mellema, Garrelt; et al. (October 2006). "Simulating cosmic reionization at large scales - II. The 21-cm emission features and statistical signals". Monthly Notices of the Royal Astronomical Society. 372 (2): 679–692. arXiv:astro-ph/0603518. Bibcode:2006MNRAS.372..679M. doi:10.1111/j.1365-2966.2006.10919.x. S2CID 16389221.
Kohler, Katharina; et al. (November 2005). "Redshifted 21 cm Emission from the Pre-Reionization Era. II. H II Regions around Individual Quasars". The Astrophysical Journal. 633 (2): 552–559. arXiv:astro-ph/0501086. Bibcode:2005ApJ...633..552K. doi:10.1086/444370. S2CID 15210736.
Burns, Jack O. (January 2021). "Transformative science from the lunar farside: observations of the dark ages and exoplanetary systems at low radio frequencies". Philosophical Transactions of the Royal Society A. 379 (2188). arXiv:2003.06881. Bibcode:2021RSPTA.37990564B. doi:10.1098/rsta.2019.0564. PMC 7739898. PMID 33222645. 20190564.
Wang, Xiaomin; et al. (October 2006). "21 cm Tomography with Foregrounds". The Astrophysical Journal. 650 (2): 529–537. arXiv:astro-ph/0501081. Bibcode:2006ApJ...650..529W. doi:10.1086/506597. S2CID 119595472.
Koopmans, Léon V. E.; et al. (June 2021). "Peering into the dark (ages) with low-frequency space interferometers". Experimental Astronomy. 51 (3): 1641–1676. arXiv:1908.04296. Bibcode:2021ExA....51.1641K. doi:10.1007/s10686-021-09743-7. PMC 8416573. PMID 34511720.

books.google.com

Wynn-Williams, Gareth (1992). The Fullness of Space. Cambridge University Press. p. 36. ISBN 9780521426381.

doi.org

Hellwig, Helmut; et al. (1970). "Measurement of the unperturbed hydrogen hyperfine transition frequency" (PDF). IEEE Transactions on Instrumentation and Measurement. IM-19 (4): 200. Bibcode:1970ITIM...19..200H. doi:10.1109/TIM.1970.4313902. Retrieved 2023-04-30.
Griffiths, D.J. (1982). "Hyperfine splitting in the ground state of hydrogen". American Journal of Physics. 50 (8): 698–703. Bibcode:1982AmJPh..50..698G. doi:10.1119/1.12733.
Mhaske, Ashish A.; et al. (August 2022). "A Bose horn antenna radio telescope (BHARAT) design for 21 cm hydrogen line experiments for radio astronomy teaching". American Journal of Physics. 90 (12): 948–960. arXiv:2208.06070. doi:10.1119/5.0065381.
Wiese, W.L.; Fuhr, J.R. (2009-06-24). "Accurate atomic transition probabilities for hydrogen, helium, and lithium". Journal of Physical and Chemical Reference Data. 38 (3): 565–720. Bibcode:2009JPCRD..38..565W. doi:10.1063/1.3077727. ISSN 0047-2689.
Nusser, Adi (May 2005). "The spin temperature of neutral hydrogen during cosmic pre-reionization". Monthly Notices of the Royal Astronomical Society. 359 (1): 183–190. arXiv:astro-ph/0409640. Bibcode:2005MNRAS.359..183N. doi:10.1111/j.1365-2966.2005.08894.x. S2CID 11547883.
Ramsey, Norman F. (January 1965). "The Atomic Hydrogen Maser" (PDF). Metrologia. 1 (1): 7–15. Bibcode:1965Metro...1....7R. doi:10.1088/0026-1394/1/1/004. S2CID 250873158. Retrieved 2023-04-27.
Pritchard, Jonathan R.; Loeb, Abraham (August 2012). "21 cm cosmology in the 21st century". Reports on Progress in Physics. 75 (8): 086901. arXiv:1109.6012. Bibcode:2012RPPh...75h6901P. doi:10.1088/0034-4885/75/8/086901. PMID 22828208. S2CID 41341641. 086901.
Purcell, E. M. (1953). "Line Spectra in Radio Astronomy". Proceedings of the American Academy of Arts and Sciences. 82 (7): 347–349. doi:10.2307/20023736. JSTOR 20023736.
Ewen, H.I.; Purcell, E.M. (September 1951). "Observation of a line in the galactic radio spectrum: Radiation from galactic hydrogen at 1,420 Mc./sec". Nature. 168 (4270): 356. Bibcode:1951Natur.168..356E. doi:10.1038/168356a0. S2CID 27595927.
Muller, C.A.; Oort, J.H. (September 1951). "The interstellar hydrogen line at 1,420 Mc./sec., and an estimate of galactic rotation". Nature. 168 (4270): 357–358. Bibcode:1951Natur.168..357M. doi:10.1038/168357a0. S2CID 32329393.
Kerr, Frank J. (1969). "The Large-Scale Distribution of Hydrogen in the Galaxy". Annual Review of Astronomy and Astrophysics. 7: 39. Bibcode:1969ARA&A...7...39K. doi:10.1146/annurev.aa.07.090169.000351.
Roberts, Morton S. (September 1969). "Integral Properties of Spiral and Irregular Galaxies". Astronomical Journal. 74: 859–876. Bibcode:1969AJ.....74..859R. doi:10.1086/110874.
Drinkwater, M. J.; Webb, J. K–; Barrow, J. D.; Flambaum, V. V. (April 1998). "New limits on the possible variation of physical constants". Monthly Notices of the Royal Astronomical Society. 295 (2): 457–462. arXiv:astro-ph/9711290. Bibcode:1998MNRAS.295..457D. doi:10.1046/j.1365-8711.1998.2952457.x. S2CID 5938714.
Verschuur, G. L. (September 1968). "Positive Determination of an Interstellar Magnetic Field by Measurement of the Zeeman Splitting of the 21-cm Hydrogen Line". Physical Review Letters. 21 (11): 775–778. Bibcode:1968PhRvL..21..775V. doi:10.1103/PhysRevLett.21.775.
Solovyev, Dmitry; Labzowsky, Leonti (November 2014). "The 21 cm absorption line profile as a tool for the search for antimatter in the universe". Progress of Theoretical and Experimental Physics. 2014 (11): 111E01. Bibcode:2014PTEP.2014k1E01S. doi:10.1093/ptep/ptu142. 111E016.
Rogers, A. E. E.; Dudevoir, K. A.; Bania, T. M. (2007-03-09). "Observations of the 327 MHz Deuterium Hyperfine Transition". The Astronomical Journal. 133 (4): 1625–1632. Bibcode:2007AJ....133.1625R. doi:10.1086/511978. ISSN 1538-3881. S2CID 15541399.
Peters, Wendy M.; et al. (January 2011). "Radio Recombination Lines at Decameter Wavelengths: Prospects for the Future". Astronomy & Astrophysics. 525. arXiv:1010.0292. Bibcode:2011A&A...525A.128P. doi:10.1051/0004-6361/201014707. S2CID 53582482. A128.
Fialkov, A.; Loeb, A. (November 2013). "The 21-cm Signal from the cosmological epoch of recombination". Journal of Cosmology and Astroparticle Physics. 2013 (11): 066. arXiv:1311.4574. Bibcode:2013JCAP...11..066F. doi:10.1088/1475-7516/2013/11/066. S2CID 250754168. 066.
Mellema, Garrelt; et al. (October 2006). "Simulating cosmic reionization at large scales - II. The 21-cm emission features and statistical signals". Monthly Notices of the Royal Astronomical Society. 372 (2): 679–692. arXiv:astro-ph/0603518. Bibcode:2006MNRAS.372..679M. doi:10.1111/j.1365-2966.2006.10919.x. S2CID 16389221.
Kohler, Katharina; et al. (November 2005). "Redshifted 21 cm Emission from the Pre-Reionization Era. II. H II Regions around Individual Quasars". The Astrophysical Journal. 633 (2): 552–559. arXiv:astro-ph/0501086. Bibcode:2005ApJ...633..552K. doi:10.1086/444370. S2CID 15210736.
Burns, Jack O. (January 2021). "Transformative science from the lunar farside: observations of the dark ages and exoplanetary systems at low radio frequencies". Philosophical Transactions of the Royal Society A. 379 (2188). arXiv:2003.06881. Bibcode:2021RSPTA.37990564B. doi:10.1098/rsta.2019.0564. PMC 7739898. PMID 33222645. 20190564.
Wang, Xiaomin; et al. (October 2006). "21 cm Tomography with Foregrounds". The Astrophysical Journal. 650 (2): 529–537. arXiv:astro-ph/0501081. Bibcode:2006ApJ...650..529W. doi:10.1086/506597. S2CID 119595472.
Koopmans, Léon V. E.; et al. (June 2021). "Peering into the dark (ages) with low-frequency space interferometers". Experimental Astronomy. 51 (3): 1641–1676. arXiv:1908.04296. Bibcode:2021ExA....51.1641K. doi:10.1007/s10686-021-09743-7. PMC 8416573. PMID 34511720.
Capova, Klara Anna (October 18, 2021). "Introducing Humans to the Extraterrestrials: the Pioneering Missions of the Pioneer and Voyager Probes". Frontiers in Human Dynamics. 3. Frontiers Media S.A. doi:10.3389/fhumd.2021.714616.

harvard.edu

ui.adsabs.harvard.edu

Hellwig, Helmut; et al. (1970). "Measurement of the unperturbed hydrogen hyperfine transition frequency" (PDF). IEEE Transactions on Instrumentation and Measurement. IM-19 (4): 200. Bibcode:1970ITIM...19..200H. doi:10.1109/TIM.1970.4313902. Retrieved 2023-04-30.
Griffiths, D.J. (1982). "Hyperfine splitting in the ground state of hydrogen". American Journal of Physics. 50 (8): 698–703. Bibcode:1982AmJPh..50..698G. doi:10.1119/1.12733.
Wiese, W.L.; Fuhr, J.R. (2009-06-24). "Accurate atomic transition probabilities for hydrogen, helium, and lithium". Journal of Physical and Chemical Reference Data. 38 (3): 565–720. Bibcode:2009JPCRD..38..565W. doi:10.1063/1.3077727. ISSN 0047-2689.
Nusser, Adi (May 2005). "The spin temperature of neutral hydrogen during cosmic pre-reionization". Monthly Notices of the Royal Astronomical Society. 359 (1): 183–190. arXiv:astro-ph/0409640. Bibcode:2005MNRAS.359..183N. doi:10.1111/j.1365-2966.2005.08894.x. S2CID 11547883.
Ramsey, Norman F. (January 1965). "The Atomic Hydrogen Maser" (PDF). Metrologia. 1 (1): 7–15. Bibcode:1965Metro...1....7R. doi:10.1088/0026-1394/1/1/004. S2CID 250873158. Retrieved 2023-04-27.
Pritchard, Jonathan R.; Loeb, Abraham (August 2012). "21 cm cosmology in the 21st century". Reports on Progress in Physics. 75 (8): 086901. arXiv:1109.6012. Bibcode:2012RPPh...75h6901P. doi:10.1088/0034-4885/75/8/086901. PMID 22828208. S2CID 41341641. 086901.
Ewen, H.I.; Purcell, E.M. (September 1951). "Observation of a line in the galactic radio spectrum: Radiation from galactic hydrogen at 1,420 Mc./sec". Nature. 168 (4270): 356. Bibcode:1951Natur.168..356E. doi:10.1038/168356a0. S2CID 27595927.
Muller, C.A.; Oort, J.H. (September 1951). "The interstellar hydrogen line at 1,420 Mc./sec., and an estimate of galactic rotation". Nature. 168 (4270): 357–358. Bibcode:1951Natur.168..357M. doi:10.1038/168357a0. S2CID 32329393.
van de Hulst, H. C.; et al. (May 1954). "The spiral structure of the outer part of the Galactic System derived from the hydrogen emission at 21 cm wavelength". Bulletin of the Astronomical Institutes of the Netherlands. 12: 117. Bibcode:1954BAN....12..117V.
Westerhout, G. (May 1957). "The distribution of atomic hydrogen in the outer parts of the Galactic System". Bulletin of the Astronomical Institutes of the Netherlands. 13: 201. Bibcode:1957BAN....13..201W.
Kerr, Frank J. (1969). "The Large-Scale Distribution of Hydrogen in the Galaxy". Annual Review of Astronomy and Astrophysics. 7: 39. Bibcode:1969ARA&A...7...39K. doi:10.1146/annurev.aa.07.090169.000351.
Roberts, Morton S. (September 1969). "Integral Properties of Spiral and Irregular Galaxies". Astronomical Journal. 74: 859–876. Bibcode:1969AJ.....74..859R. doi:10.1086/110874.
Drinkwater, M. J.; Webb, J. K–; Barrow, J. D.; Flambaum, V. V. (April 1998). "New limits on the possible variation of physical constants". Monthly Notices of the Royal Astronomical Society. 295 (2): 457–462. arXiv:astro-ph/9711290. Bibcode:1998MNRAS.295..457D. doi:10.1046/j.1365-8711.1998.2952457.x. S2CID 5938714.
Verschuur, G. L. (September 1968). "Positive Determination of an Interstellar Magnetic Field by Measurement of the Zeeman Splitting of the 21-cm Hydrogen Line". Physical Review Letters. 21 (11): 775–778. Bibcode:1968PhRvL..21..775V. doi:10.1103/PhysRevLett.21.775.
Solovyev, Dmitry; Labzowsky, Leonti (November 2014). "The 21 cm absorption line profile as a tool for the search for antimatter in the universe". Progress of Theoretical and Experimental Physics. 2014 (11): 111E01. Bibcode:2014PTEP.2014k1E01S. doi:10.1093/ptep/ptu142. 111E016.
Rogers, A. E. E.; Dudevoir, K. A.; Bania, T. M. (2007-03-09). "Observations of the 327 MHz Deuterium Hyperfine Transition". The Astronomical Journal. 133 (4): 1625–1632. Bibcode:2007AJ....133.1625R. doi:10.1086/511978. ISSN 1538-3881. S2CID 15541399.
Peters, Wendy M.; et al. (January 2011). "Radio Recombination Lines at Decameter Wavelengths: Prospects for the Future". Astronomy & Astrophysics. 525. arXiv:1010.0292. Bibcode:2011A&A...525A.128P. doi:10.1051/0004-6361/201014707. S2CID 53582482. A128.
Fialkov, A.; Loeb, A. (November 2013). "The 21-cm Signal from the cosmological epoch of recombination". Journal of Cosmology and Astroparticle Physics. 2013 (11): 066. arXiv:1311.4574. Bibcode:2013JCAP...11..066F. doi:10.1088/1475-7516/2013/11/066. S2CID 250754168. 066.
Mellema, Garrelt; et al. (October 2006). "Simulating cosmic reionization at large scales - II. The 21-cm emission features and statistical signals". Monthly Notices of the Royal Astronomical Society. 372 (2): 679–692. arXiv:astro-ph/0603518. Bibcode:2006MNRAS.372..679M. doi:10.1111/j.1365-2966.2006.10919.x. S2CID 16389221.
Kohler, Katharina; et al. (November 2005). "Redshifted 21 cm Emission from the Pre-Reionization Era. II. H II Regions around Individual Quasars". The Astrophysical Journal. 633 (2): 552–559. arXiv:astro-ph/0501086. Bibcode:2005ApJ...633..552K. doi:10.1086/444370. S2CID 15210736.
Burns, Jack O. (January 2021). "Transformative science from the lunar farside: observations of the dark ages and exoplanetary systems at low radio frequencies". Philosophical Transactions of the Royal Society A. 379 (2188). arXiv:2003.06881. Bibcode:2021RSPTA.37990564B. doi:10.1098/rsta.2019.0564. PMC 7739898. PMID 33222645. 20190564.
Wang, Xiaomin; et al. (October 2006). "21 cm Tomography with Foregrounds". The Astrophysical Journal. 650 (2): 529–537. arXiv:astro-ph/0501081. Bibcode:2006ApJ...650..529W. doi:10.1086/506597. S2CID 119595472.
Koopmans, Léon V. E.; et al. (June 2021). "Peering into the dark (ages) with low-frequency space interferometers". Experimental Astronomy. 51 (3): 1641–1676. arXiv:1908.04296. Bibcode:2021ExA....51.1641K. doi:10.1007/s10686-021-09743-7. PMC 8416573. PMID 34511720.

iop.org

iopscience.iop.org

Rogers, A. E. E.; Dudevoir, K. A.; Bania, T. M. (2007-03-09). "Observations of the 327 MHz Deuterium Hyperfine Transition". The Astronomical Journal. 133 (4): 1625–1632. Bibcode:2007AJ....133.1625R. doi:10.1086/511978. ISSN 1538-3881. S2CID 15541399.

jstor.org

Purcell, E. M. (1953). "Line Spectra in Radio Astronomy". Proceedings of the American Academy of Arts and Sciences. 82 (7): 347–349. doi:10.2307/20023736. JSTOR 20023736.

leapsecond.com

Ramsey, Norman F. (January 1965). "The Atomic Hydrogen Maser" (PDF). Metrologia. 1 (1): 7–15. Bibcode:1965Metro...1....7R. doi:10.1088/0026-1394/1/1/004. S2CID 250873158. Retrieved 2023-04-27.

n-t.ru

Makovetsky, P. "Смотри в корень" [Look at the root] (in Russian).

nih.gov

pubmed.ncbi.nlm.nih.gov

Pritchard, Jonathan R.; Loeb, Abraham (August 2012). "21 cm cosmology in the 21st century". Reports on Progress in Physics. 75 (8): 086901. arXiv:1109.6012. Bibcode:2012RPPh...75h6901P. doi:10.1088/0034-4885/75/8/086901. PMID 22828208. S2CID 41341641. 086901.
Burns, Jack O. (January 2021). "Transformative science from the lunar farside: observations of the dark ages and exoplanetary systems at low radio frequencies". Philosophical Transactions of the Royal Society A. 379 (2188). arXiv:2003.06881. Bibcode:2021RSPTA.37990564B. doi:10.1098/rsta.2019.0564. PMC 7739898. PMID 33222645. 20190564.
Koopmans, Léon V. E.; et al. (June 2021). "Peering into the dark (ages) with low-frequency space interferometers". Experimental Astronomy. 51 (3): 1641–1676. arXiv:1908.04296. Bibcode:2021ExA....51.1641K. doi:10.1007/s10686-021-09743-7. PMC 8416573. PMID 34511720.

ncbi.nlm.nih.gov

Burns, Jack O. (January 2021). "Transformative science from the lunar farside: observations of the dark ages and exoplanetary systems at low radio frequencies". Philosophical Transactions of the Royal Society A. 379 (2188). arXiv:2003.06881. Bibcode:2021RSPTA.37990564B. doi:10.1098/rsta.2019.0564. PMC 7739898. PMID 33222645. 20190564.
Koopmans, Léon V. E.; et al. (June 2021). "Peering into the dark (ages) with low-frequency space interferometers". Experimental Astronomy. 51 (3): 1641–1676. arXiv:1908.04296. Bibcode:2021ExA....51.1641K. doi:10.1007/s10686-021-09743-7. PMC 8416573. PMID 34511720.

nist.gov

tf.nist.gov

Hellwig, Helmut; et al. (1970). "Measurement of the unperturbed hydrogen hyperfine transition frequency" (PDF). IEEE Transactions on Instrumentation and Measurement. IM-19 (4): 200. Bibcode:1970ITIM...19..200H. doi:10.1109/TIM.1970.4313902. Retrieved 2023-04-30.

planetary.org

Rosenthal, Jake (January 20, 2016). "The Pioneer Plaque: Science as a Universal Language". The Planetary Society. Retrieved 2023-04-26.

scitation.org

aip.scitation.org

Wiese, W.L.; Fuhr, J.R. (2009-06-24). "Accurate atomic transition probabilities for hydrogen, helium, and lithium". Journal of Physical and Chemical Reference Data. 38 (3): 565–720. Bibcode:2009JPCRD..38..565W. doi:10.1063/1.3077727. ISSN 0047-2689.

semanticscholar.org

api.semanticscholar.org

Nusser, Adi (May 2005). "The spin temperature of neutral hydrogen during cosmic pre-reionization". Monthly Notices of the Royal Astronomical Society. 359 (1): 183–190. arXiv:astro-ph/0409640. Bibcode:2005MNRAS.359..183N. doi:10.1111/j.1365-2966.2005.08894.x. S2CID 11547883.
Ramsey, Norman F. (January 1965). "The Atomic Hydrogen Maser" (PDF). Metrologia. 1 (1): 7–15. Bibcode:1965Metro...1....7R. doi:10.1088/0026-1394/1/1/004. S2CID 250873158. Retrieved 2023-04-27.
Pritchard, Jonathan R.; Loeb, Abraham (August 2012). "21 cm cosmology in the 21st century". Reports on Progress in Physics. 75 (8): 086901. arXiv:1109.6012. Bibcode:2012RPPh...75h6901P. doi:10.1088/0034-4885/75/8/086901. PMID 22828208. S2CID 41341641. 086901.
Ewen, H.I.; Purcell, E.M. (September 1951). "Observation of a line in the galactic radio spectrum: Radiation from galactic hydrogen at 1,420 Mc./sec". Nature. 168 (4270): 356. Bibcode:1951Natur.168..356E. doi:10.1038/168356a0. S2CID 27595927.
Muller, C.A.; Oort, J.H. (September 1951). "The interstellar hydrogen line at 1,420 Mc./sec., and an estimate of galactic rotation". Nature. 168 (4270): 357–358. Bibcode:1951Natur.168..357M. doi:10.1038/168357a0. S2CID 32329393.
Drinkwater, M. J.; Webb, J. K–; Barrow, J. D.; Flambaum, V. V. (April 1998). "New limits on the possible variation of physical constants". Monthly Notices of the Royal Astronomical Society. 295 (2): 457–462. arXiv:astro-ph/9711290. Bibcode:1998MNRAS.295..457D. doi:10.1046/j.1365-8711.1998.2952457.x. S2CID 5938714.
Rogers, A. E. E.; Dudevoir, K. A.; Bania, T. M. (2007-03-09). "Observations of the 327 MHz Deuterium Hyperfine Transition". The Astronomical Journal. 133 (4): 1625–1632. Bibcode:2007AJ....133.1625R. doi:10.1086/511978. ISSN 1538-3881. S2CID 15541399.
Peters, Wendy M.; et al. (January 2011). "Radio Recombination Lines at Decameter Wavelengths: Prospects for the Future". Astronomy & Astrophysics. 525. arXiv:1010.0292. Bibcode:2011A&A...525A.128P. doi:10.1051/0004-6361/201014707. S2CID 53582482. A128.
Fialkov, A.; Loeb, A. (November 2013). "The 21-cm Signal from the cosmological epoch of recombination". Journal of Cosmology and Astroparticle Physics. 2013 (11): 066. arXiv:1311.4574. Bibcode:2013JCAP...11..066F. doi:10.1088/1475-7516/2013/11/066. S2CID 250754168. 066.
Mellema, Garrelt; et al. (October 2006). "Simulating cosmic reionization at large scales - II. The 21-cm emission features and statistical signals". Monthly Notices of the Royal Astronomical Society. 372 (2): 679–692. arXiv:astro-ph/0603518. Bibcode:2006MNRAS.372..679M. doi:10.1111/j.1365-2966.2006.10919.x. S2CID 16389221.
Kohler, Katharina; et al. (November 2005). "Redshifted 21 cm Emission from the Pre-Reionization Era. II. H II Regions around Individual Quasars". The Astrophysical Journal. 633 (2): 552–559. arXiv:astro-ph/0501086. Bibcode:2005ApJ...633..552K. doi:10.1086/444370. S2CID 15210736.
Wang, Xiaomin; et al. (October 2006). "21 cm Tomography with Foregrounds". The Astrophysical Journal. 650 (2): 529–537. arXiv:astro-ph/0501081. Bibcode:2006ApJ...650..529W. doi:10.1086/506597. S2CID 119595472.

thenauticalalmanac.com

Bowditch, Nathaniel (2002). "10. Radio Waves" (PDF). The American Practical Navigator: An Epitome of Navigation. 2002 Bicentennial Edition. National Imagery and Mapping Agency. p. 158. Retrieved 2023-04-28. Skywaves are not used in the UHF band because the ionosphere is not sufficiently dense to reflect the waves, which pass through it into space. ... Reception of UHF signals is virtually free from fading and interference from atmospheric noise.

worldcat.org

Wiese, W.L.; Fuhr, J.R. (2009-06-24). "Accurate atomic transition probabilities for hydrogen, helium, and lithium". Journal of Physical and Chemical Reference Data. 38 (3): 565–720. Bibcode:2009JPCRD..38..565W. doi:10.1063/1.3077727. ISSN 0047-2689.
Rogers, A. E. E.; Dudevoir, K. A.; Bania, T. M. (2007-03-09). "Observations of the 327 MHz Deuterium Hyperfine Transition". The Astronomical Journal. 133 (4): 1625–1632. Bibcode:2007AJ....133.1625R. doi:10.1086/511978. ISSN 1538-3881. S2CID 15541399.