First evidence of planetary water maser emission induced by the comet/Jupiter catastrophic impact

Cosmovici, C. B.; Montebugnoli, S.; Orfei, A.; Pogrebenko, S. V.; Colom, P.

doi:10.1016/0032-0633(96)00072-4

Cited by 49 publications

(14 citation statements)

References 13 publications

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“…In addition, we should also perform monitoring observations of other icy bodies; Jovian satellites, comets, outer asteroids, and Kuiper belt objects would be within our scope. As suggested by Cosmovici et al (1996), maser emission may be induced by catastrophic events. Such events, as a disruption and eruption, can occasionally be found among the solar-system objects [e.g., C/1999 S4 Linear: disruption and dissipation; 29P/Schwassmann-Wachmann: outburst; 7968 Elst-Pizarro: impact or cometary activity (Toth 2000;Hsieh et al 2004)].…”

Section: Resultsmentioning

confidence: 99%

“…Each phenomenon would be induced by different physical processes. While a thermal 22.235 GHz water line was possibly detected for the comet Hale-Bopp (Bird et al 1997), the first detection of an H 2 O maser in the solar system was reported upon the catastrophic impact of comet ShoemakerLevy 9 and Jupiter (Cosmovici et al 1996). This report suggests that such an incident can induce collisional pumping for water masers.…”

Section: Introductionmentioning

confidence: 87%

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A Search for Water Masers in the Saturnian System

Takahashi¹,

Deguchi²,

Kuno³

et al. 2010

Publications of the Astronomical Society of Japan

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We have searched for H 2 O 6(1,6)-5(2,3) maser emission at 22.235 GHz from several Saturnian satellites with the Nobeyama 45m radio telescope in 2009 May. Objects of our observation are Titan, Hyperion, Enceladus, and Atlas, from which Pogrebenko et al. (2009, A&A, 494, L1) reported having detected water masers at 22.235 GHz, and in addition are Iapetus and other inner satellites. We detected no emission of the water-maser line from all of the satellites observed, although the sensitivities of our observation are comparable to, or even better than, those of Pogrebenko et al. (2009, A&A, 494, L1). We infer from our observation that the water-maser emission from the Saturnian system is extremely weak, or sporadic in itself. Both monitoring over a long period and obtaining statistical results are important for gaining a further understanding of the water-maser emission in the Saturnian system.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 87%

A Search for Water Masers in the Saturnian System

Takahashi¹,

Deguchi²,

Kuno³

et al. 2010

Publications of the Astronomical Society of Japan

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“…So far, there are also about 110 different masing lines, according to a list recently assembled by Carl Menten, and to which a large number of observers have contributed. Masers have been found under a wide variety of conditions, including the recent comet Shoemaker-Levy impact on Jupiter, which set off a water maser (Cosmovici et al 1996). In retrospect, it is obvious that conditions in interstellar space and surrounding energetic astronomical sources are just what is needed for masers, and we should have expected them at a much earlier time.…”

Section: The Search For Microwave Spectra Of Interstellar Moleculesmentioning

confidence: 99%

A Physicist Courts Astronomy

Townes

1997

Annu. Rev. Astron. Astrophys.

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“…To detect this level of maser signal, an integration time of the order of several hours would be required. Physical models of masers in the Solar System were described by Mumma (1993) and the first detection of the 22 GHz water-maser emission from a planetary system was made during the collision of the Shoemaker-Levy comet with Jupiter (Cosmovici et al 1996).…”

Section: Introduction: Feasibility Of Water Maser Detection In the Samentioning

confidence: 99%

Water masers in the Saturnian system

Pogrebenko

Gurvits

Elitzur³

et al. 2009

A&A

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Context. The presence of water has long been seen as a key condition for life in planetary environments. The Cassini spacecraft discovered water vapour in the Saturnian system by detecting absorption of UV emission from a background star. Investigating other possible manifestations of water is essential, one of which, provided physical conditions are suitable, is maser emission. Aims. We report detection of water maser emission at 22 GHz associated with several Kronian satellites using Earth-based radio telescopes. Methods. We searched for water maser emission in the Saturnian system in an observing campaign using the Metsähovi and Medicina radio telescopes. Spectral data were Doppler-corrected over orbital phase for the Saturnian satellites, yielding detections of water maser emission associated with the moons Hyperion, Titan, Enceladus, and Atlas. Results. The detection of Saturnian water molecules by remote astronomical observation can be combined with in situ spacecraft measurements to harmonise the physical model of the Saturnian system.

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First evidence of planetary water maser emission induced by the comet/Jupiter catastrophic impact

Cited by 49 publications

References 13 publications

A Search for Water Masers in the Saturnian System

A Search for Water Masers in the Saturnian System

A Physicist Courts Astronomy

Water masers in the Saturnian system

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