DAYS IN SOLAR ROTATION INTERVAL ROT.­ NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 2289 Mar 29 30 1 5 10 15 20 24 Apr 2290 Apr 25 30 1 5 10 15 20 21 May 2291 May 22 25 30 1 5 10 15 17 Jun 2292 Jun 18 20 25 30 1 5 10 14 Jul 2293 Jul 15 PLANETARY MAGNETIC THREE­HOUR­RANGE INDICES Kp till 2001 Jul 15 = sudden commencement KEY 0 o + ­ 1 o + ­ 2 o + ­ 3 o + ­ 4 o + ­ 5 o + ­ 6 o + ­ 7 o + ­ 8 o + ­ 9 o

... The planets differ greatly in size and properties, and their fields differ too. ... In 1959, after the Earth's radiation belt had been discovered, Frank Drake observed Jupiter and concluded from the relative intensities in a range of wavelengths that the signal was probably emitted by electrons trapped in a strong magnetic field. Then in 1973 the space probe Pioneer 10 passed by Jupiter and found there, sure enough, an enormous planetary magnetic field and a very intense radiation belt. ...

... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . ... Mars . ... Previously understood that magnetic fields were directly related to rotation, so when I read that Mars, like Venus, didn't have one, my understanding crumbled. What exactly causes magnetic fields in planets? ... RELATED TOPICS: MAGNETIC FIELD . Planetary magnetic fields are definitely related to rotation, but directly not so much. ... Get instant access to subscriber content on Astronomy.com! ...

... Other Characteristics of the Sun: Variability of Rotation, Magnetism, Chemical Structure, Planetary System. ... Methods of Solar Magnetic Fields Measuring: Visual, Photografic, Photoelectric. ... Empiric Datas of Magnetic Fields in Photosphere, Chromosphere and Corona. ... Characteristics of Magnetic Field in Balanced Force Tubes by Potential and Forceless Field. ... Phenomenons in Active Region (Magnetic Field, Spots, Torches, Solar Prominences, Flares, Discharges. ... Magnetic Fields in Flares. ...

... Space Res., 12, 265, 1992 planetary magnetic dipole: Mizutani, H., et al., ... Astrobiology, 7, 167, 2007 CME induced H+ ion pick-up loss at 0.05 AU for ` Hot Jupiters ' HD209458 b Mass loss ~1011 g/s even for weak CMEs Mmax strong magn. protection in reality Exoplanet magnetospheres - importance of magnetodisk Relatively large amount of observed Hot Jupiters (27%): survival of close-in giants indicates their efficient protection against of extreme plasma and radiation conditions ...

Selected Geomagnetic and Solar Activity Indices Worldwide Indices The subscript p means planetary and designates a global magnetic activity index. ... Each activity level relates almost logarithmically to its corresponding disturbance amplitude. ... Records contain * Zurich number through December 31, 1980 * International Brussels number thereafter 66-70 f5.1 Ottawa 10.7 cm Solar Radio Flux adjusted to 1 AU - measured at 1700 UT daily and expressed in units of 10^-22 W/m^2/Hz. ...

... SHTOL ' Special Astrophysical Observatory of the Russian AS, Nizhnij Arkhyz 357147, Russia The investigation of such a phenomenon as the magnetic field variability at long times (years - decennials) is very interesting. If the explanation of the magnetic field variability with rotation period by the oblique rotator model is evident, then the reason of the long-period variability is not clear yet, despite the existence of some assumptions on its nature. ... Fig.2. ... 213 Fig.3. ...

... Sun images . Magnetic storms online . Sun flares . Geomagnetic activity forecast . ... September : 2014 . ... No geomagnetic storms were observed for the past 3 hours No geomagnetic storms were observed for the past 24 hours . ... Mean planetary A index = 8 . ... Last updated: September 10, 2014 00:00 UT . ... 1953-2016 Laboratory of X-ray astronomy of the Sun, LPI RAS, Russia . ... 7(499)132-65-96, Fax: +7(499)132-65-97 . ...

... Positions in 2000 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . Positions in 2001 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . Positions in 2002 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . Positions in 2003 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . Positions in 2004 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . ...

... The chemically peculiar star HD965 belongs to a rare type of very slow rotators. As far back as in the 90s, G.Mathys (ESO, Chile) supposed its extremely slow rotation as observing split Zeeman components in the spectrum, from which he measured the magnetic field on its surface. Field variation proved to be very slow, and G.Mathys determined that the variability period should be longer than two years. ... Up to now, only two stars with periods longer than 20 years are known. ...

... Proposal Type: General Category: Sub-Category: Observation Category: Time Requested this semester : Hours Next Semester : Hours already used for this pro ject: Additional Hours required to complete pro ject: Minimum Useful Time : Expected Data Storage: Prop osal Title: Regular Astronomy Continuum Galactic 30 20 2 hours less than 100 GB A multifrequency search for flaring radio emission from the HR 8799 planetary system ABSTRACT: Detection of radio ... This is why we semester. ...

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... Gaspra . ... Comets . ... Galileo image of Ida asteroid 114k gif ; 41k jpg . ... Large false color image of asteroid 951 Gaspra 172k gif ; 33k jpg . Gaspra in true and false color 18k jpg , 140k gif , 596k tiff . Montage of 11 images taken by Galileo spacecraft of 951 Gaspra 75k gif 75k jpg . ... Gaspra, taken from Galileo, and Phobos and Deimos taken from Viking 96k gif ; 81k jpg . True & Enhanced Color images 140k gif ; 18k jpg ; 596k tiff . ... more NEAR images of Mathilde html . ...

... Takuya Akahori "Faraday Rotation Measure due to the Intergalactic Magnetic Field" . Shae Brown "Cross-correlation of ATLAS and Spitzer-SWIRE Surveys: Probing intergalactic magnetic fields" . Roger Clay "Using low energy cosmic rays to investigate local galactic magnetic fields" . Roland Crocker "A new lower limit on the magnetic field around the Galactic Centre" . ... JinLin Han "Rotation measures of pulsars and radio sources for Galactic magnetic fields" . ...

home education > activities . SEARCH ASP SITE: Match ALL words Match ANY word . ... Astronomy . ... This classic activity by Dennis Schatz asks students to invent a more-or-less plausible life form that could survive on one of the moons and planets in our solar system. [a] . ... Good as far as it goes, but fails to point out a crucial difference with the real world: on the planets, the impacting bodies explode making craters much bigger and rounder than the ones the students will obtain. [m,h] . ...

Galileo Finds Giant Iron Core in Jupiter's Moon Io . Jupiter's volcano-pocked moon Io has been found by NASA's Galileo spacecraft to have a giant iron core that takes up half its diameter, scientists report in today's issue of Science magazine. The spacecraft also has detected a large "hole" in Jupiter's magnetic field near Io, leading to speculation about whether Io possesses its own magnetic field. If so, it would be the first planetary moon known to have one. ... Space History Galileo . ...

... Science . ... Science Users Information > Science Activities > PhD Thesis Topics offered by ESO Faculty Members > Thesis Topic: Magnetic fields in massive stars . ... Observing Facilities . ... Data Handling and Products . ... Science Data Products Forum . ... Science Archive Facility . ... ESO Data . ... While magnetic fields in the sun and solar-like stars have been studied intensively, very little is yet known about their existence, origin and role in massive stars, like O and Wolf-Rayet stars. ...

Astronomy Picture of the Day . ... Tonight and over the next few days, when Mars is at its closest approach to Earth in nearly 60,000 years, you might get your best view ever of our planetary neighbor. Please, though, don't expect to see this much structure , or expect to see Mars rotate so much in so brief a period. ... In reality, one full Martian rotation -- a Martian day -- is only about 40 minutes longer than an Earth day. ... Publications with keywords: Mars . ... Victoria Crater on Mars . ...

... Bad Astronomy . ... Mad Science . ... Keep Bad Astronomy close to your heart, and help make me filthy rich. ... Date: Thu May 4 07:46:59 2000 . ... This will not be visible from earth. ... Some doomsayers predict a pole shift in the Earth. However, I have found those predictions to be vague: do they mean a shift in the Earth's rotation axis or magnetic field axis? ... If the Earth's rotational axis moved, even a little, there would be fairly large ramifications. ... 2008 Phil Plait. ... Q 2000 . ...

Next: This Work Previous: Rotation Periods of ZAMS Stars . ... There are currently several groups involved in the studies of the rotation periods of PMS stars. ... Overall, there are about 100 rotation periods known for PMS stars. ... Furthermore, the stars with periods near 8 days also tend to have infrared excesses which can be interpreted as arising from disks. ... In the first interpretation, the gap occurs because locking mechanism holds stars at a eight day rotation period. ...