MIT Research News' Journal
 
[Most Recent Entries] [Calendar View]

Thursday, November 29th, 2012

    Time Event
    5:00a
    Knowing the score
    Keeril Makan
    Keeril Makan
    Photo: Dominick Reuter

    When he was in high school, Keeril Makan visited MIT as a prospective student. The trip still stands out in his memory: Touring campus, Makan saw MIT’s own Harold “Doc” Edgerton, the famous pioneering photographer, walking by. But when it came time to fill out college applications, Makan, though a good student in science and math, gave MIT a pass. Even as a teenager, he wanted to spend as much time as possible composing music — and Makan did not realize there was a flourishing music program at MIT.

    As fate would have it, though, Makan, now a highly regarded contemporary composer, has returned to MIT — where he is writing music on a more ambitious scale than ever before. Known for inventive pieces that blend cutting-edge and classical elements, Makan has a string quartet set that premiered in October; has recently written the score for his first opera; and continues to create a variety of shorter pieces.

    It is a not a circumstance Makan would have envisioned a decade ago. But then, the composer, who recently earned tenure in MIT’s Program in Music, has learned to embrace unpredictability, in his career and his work.

    “To be alive is to be aware of change, and I try to let it be reflected in the music I write,” Makan says. “I never know what the piece is going to be until I get into the process of composing. It just reflects where I am in my life and what is happening at that moment.”

    No more fiddling around

    Makan grew up in New Jersey, with parents who appreciated music but did not expect him to create it. “There was certainly music in the house, but not music making,” he says.

    That changed when Makan took up the violin, in the fourth grade. “I was inspired, I’m embarrassed to say, by an episode of ‘The Muppet Show’ where the Charlie Daniels Band was on,” Makan says; the group performed “The Devil Went Down to Georgia,” a pop hit with a distinctive fiddle riff. “I liked the fiddling,” Makan admits.

    After also trying the oboe for a while, Makan stuck with the violin, as a performer. He first started writing music during a couple of summers in high school when he attended music camp at the Interlochen Center for the Arts in Michigan. Eventually Makan chose to attend Oberlin College, where he double-majored in music composition and religious studies — and soon stopped playing the violin.

    “I didn’t like performing that much,” he says. “I liked playing violin, but I found it very nerve-wracking to actually play solos.” By his mid-20s, Makan went back to playing, but in the meantime he focused even more on composition, earning his PhD in the field from the University of California at Berkeley. Among the composers whose work engaged him the most, he says, were Gyorgy Ligeti, of Hungary, the late Frenchman Gerard Grisey, and Salvatore Sciarrino, a contemporary Italian composer.

    Before long, Makan had started attracting attention with distinctive pieces such as “2,” a 1998 composition — written while studying briefly with MIT’s John Harbison — created for violin and percussion only. “It’s an unusual combination of instruments,” Makan concedes. “It [represented] a stripping down of influences. I had these influences of contemporary music, classical music, new music, folk music, and this was the first piece that brought them together.”

    Makan had another productive spell in Helsinki, thanks to a Fulbright grant, where he wrote a piece commissioned by the Bang on a Can All-Stars — the first time he worked with MIT composer and performer Evan Ziporyn. An ensuing string quartet written for the Kronos Quartet, “The Noise Between Thoughts,” corresponded with Makan’s return to playing violin in a serious way. “That changed the types of sounds I was attracted to,” Makan says.

    Soon after, in 2006, Makan arrived at MIT and finished a new string quartet, “Washed by Fire,” which he says marked the beginning of a new phase in his career. Previously, Makan says, he felt that “lyricism, classical music, was part of the past, and not something to be a part of music making in the present.” But instead of keeping his music strictly within an avant-garde mode, Makan “discovered a new openness to all the different interests I had,” and began to “explore timbre, melodic writing, complex writings, in [my] own language.”

    The professor’s persona

    At MIT, Makan has also refined his teaching methods. His goal with students, he says, is simply to “get them working creatively with music in a way they find satisfying.” Most of his students are juggling music with other academic priorities, although some have chosen a path similar to Makan’s. One of his former undergraduate students, Nina Young, was a double major in ocean engineering and music who now is pursuing a PhD in music composition at Columbia University.

    In this new career phase, Makan has also diversified the types of compositions he is attempting, while returning to some familiar forms as well. His latest string quartet premiered at Pickman Hall in Cambridge in October, performed by the Pacifica Quartet, as part of the Celebrity Series of Boston.

    The opera for which Makan has written the score is an interpretation of “Persona,” the 1966 film by Swedish director Ingmar Bergman; the libretto is by Jay Scheib, an associate professor in MIT’s Theater Arts program. The opera, like the film, is about “the fact that our identity is constructed,” Makan says. “There are masks that we wear throughout our lives that change, they are not permanent.”

    Makan is also beginning work on an hourlong concert piece, commissioned by the group Either/Or, which he expects to finish next summer. The composition “is in the dreaming state” right now, Makan says.

    Thematically, Makan adds, the recurrence of certain motifs in the new quartet represents “a balance between the illusion that events repeat themselves and the reality that nothing ever returns unaltered.” It is an idea that has run through Makan’s mind when he “physically returns to places I have visited before in my life, [while] visiting them under different circumstances.”

    Sounds like a notion well-suited to a onetime prospective MIT student who has returned to the Institute as a full-fledged composer.
    7:00p
    Scientists discover water ice on Mercury
    Mercury, the smallest and innermost planet in our solar system, revolves around the sun in a mere 88 days, making a tight orbit that keeps the planet incredibly toasty. Surface temperatures on Mercury can reach a blistering 800 degrees Fahrenheit — hot enough to liquefy lead.  

    Now researchers from NASA, MIT, the University of California at Los Angeles and elsewhere have discovered evidence that the scorching planet may harbor pockets of water ice, along with organic material, in several permanently shadowed craters near Mercury’s north pole.

    The surprising discovery suggests to scientists that both ice and organic material, such as carbon, may have been deposited on Mercury’s surface by impacts from comets or asteroids. Over time, this volatile material could then have migrated to the planet’s poles.

    “We thought the most exciting finding could be that this really was water ice,” says Maria Zuber, the E.A. Griswold Professor of Geophysics in MIT’s Department of Earth, Atmospheric and Planetary Sciences, and a member of the research team. “But the identification of darker, insulating material that may indicate complex organics makes the story even more thrilling.”

    Zuber and her colleagues published their results this week in the journal Science.

    Mounting evidence for ice

    The possibility that water ice might exist on Mercury is not new: In the 1990s, radar observations detected bright regions near Mercury’s poles that scientists believed could be signs of either water ice or a rough planetary surface. However, the evidence was inconclusive for either scenario.

    To get a clearer picture of Mercury’s polar regions, Zuber and her colleagues analyzed observations taken by NASA’s MESSENGER (MErcury Surface, Space ENvironment, GEochemistry and Ranging) mission, a probe that has been orbiting the planet and mapping its topography since April 2011.

    Ice on Mercury
    Perspective view of Mercury’s north polar region with the radar-bright regions shown in yellow.
    Image: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington

    Mapping the planet’s surface is a challenging task, as the craft must weather the sun’s intense radiation, which can “play havoc with electronics,” Zuber says. What’s more, the probe moves from pole to pole in an elliptical orbit, making for an extremely tricky mapping mission, both dynamically and thermally. Despite these challenges, MESSENGER’s onboard laser altimeter has amassed more than 10 million laser pulses that have been used to map topography and measure the near-infrared reflectance of the surface.

    Last year, researchers analyzed the probe’s topographic observations and created a high-resolution map of Mercury; they then overlaid previous radar observations. They found that the bright regions detected in radar lined up with permanently shadowed craters at the planet’s north pole — regions that never see the sun, and which are potentially ideal places for ice to survive. This finding was one more piece of evidence that Mercury might harbor water ice.

    Revealing shadows

    In this latest analysis of MESSENGER’s observations, scientists believe they have found conclusive evidence for water ice on Mercury, although the data was at first puzzling.

    The team found that the probe’s reflectance measurements, taken via laser altimetry, matched up well with previously mapped radar-bright regions in Mercury’s high northern latitudes. Two craters in particular were bright, both in radar and at laser wavelengths, indicating the possible presence of reflective ice.
    However, just south of these craters, others appeared dark with laser altimetry, but bright in radar.

    The observations “threw us off track for a long time,” Zuber says, until another team member, David Paige of UCLA, developed a thermal model of the planet. Using MESSENGER observations of Mercury’s topography, reflectance and rotational characteristics, the model simulated the sun’s illumination of the planet, enabling precise determination of Mercury’s temperature at and below the surface.  

    Results indicated that the unusually bright deposits corresponded to regions where water ice was stable at the surface; in dark regions, ice was stable within a meter of the surface. The dark insulating material is consistent with complex organics that would already be dark but may have been darkened further by the intense radiation at Mercury’s surface.

    In addition, MESSENGER’s neutron spectrometer detected elemental hydrogen in the vicinity of Mercury’s north pole. The combination of the compositional, spectral and geometric observations and the thermal models provided a strong, self-consistent explanation for the unusual radar backscatter observations.

    Paul Lucey, a professor of geophysics and planetology at the University of Hawaii, points out that MESSENGER has also revealed a number of regions where surfaces were much darker than in previous radar measurements. Lucey interprets these results as possible evidence of receding ice on Mercury’s surface.

    “This suggests that in the past, ice was more extensive on Mercury, and retreated to its current state,” says Lucey, who was not involved in the research. “Even Mercury experiences global warming.”

    MESSENGER will continue to orbit Mercury, and Zuber says future data may reveal information beyond the planet’s surface. “There are still some really good questions to answer about the interior,” Zuber says. “I’ll tell you, we’re not done.”

    << Previous Day 2012/11/29
    [Calendar]
    Next Day >>

MIT Research News   About LJ.Rossia.org