After 16 years of observations of hundreds of cosmic X-ray sources, the Rossi X-ray timing Explorer was turned off and ceased operations. The High Energy X-ray Timing Experiment, conceived, designed, and built at UCSD, was one of three instruments aboard RXTE. RXTE opened the realm of time domain astrophysics with sub-millisecond timing of accreting neutron stars, magnetars, and Galactic black holes, thousands of monitoring observations revealing details on the spectral states and variability of active galaxies and micro-quasars, and all-sky monitoring of persistent and transient sources. The rapid response of RXTE to unpredictable cosmic events was a hallmark of the mission. Read More

We are proud to announce that we got "first light/microwave" today with POLARBEAR. We saw the planets Venus and Jupiter, not in the visible portion of the electromagnetic spectrum, but with microwave/radio "vision". Read More

Astronomers at Pennsylvania State University, UCSD and Carnegie Observatories, including CASS's Adam Burgasser, have confirmed the existence of an extremely low-temperature companion to the nearby white dwarf WD 0806-661. With an estimated temperature between 80 and 160 F, WD 0806-661B is the only directly detected companion to a star with a temperature similar to Earth's. In addition, its mass is only 7 times that of Jupiter, so it is unclear whether WD 0806-661B should be called a brown dwarf or a planet. Read More

A new study has shown that rapidly growing supermassive black holes, known as active galactic nuclei, are found in every kind of galaxy - massive and smaller, old elliptical red galaxies and younger blue spirals - exonerating active galactic nuclei as a suspect in the quenching of star formation in galaxies. The study, led by CASS postdoc James Aird, searched for X-rays from active galactic nuclei within PRIMUS, a large-scale survey to map the distances of over 100,000 galaxies that involves many CASS members. Read More

NASA today launched a pair of small spacecraft that will give middle-school students an unprecedented opportunity to study the moon by way of cameras guided by undergraduates at UC San Diego. The university will use software to project the path that the GRAIL spacecraft will follow while orbiting the moon next year. Middle-school students can ask UCSD to use the spacecraft's MoonKam imaging systems to photograph specific spots on the surface. CASS Researcher Karen Flammer is involved in education and outreach for the GRAIL mission. Read More

CASS Postdoctoral Fellow Dr. Carl Melis has helped identify the nearest "baby" star, a 40 million-year-old pre-main sequence star called AP Columbae. The cool red dwarf star is about 1000 times less luminous that our Sun, and is located a mere 27 light-years from Earth in a newly recognized group of stars known as the Argus/IC 2391 association. The study appears in this month's issue of the Astronomical Journal. Read More

A consortium of researchers, including CASS Professor Adam Burgasser, have identified a brand new class of cold star-like objects called Y dwarfs, with temperatures as cool as the human body. The discoveries were found using NASA's Wide-field Infrared Survey Explorer (WISE), and identified as Y dwarfs with a sensitive near-infrared spectrograph called FIRE that Prof. Burgasser helped construct for the Magellan Telescopes in Chile. The results will appear in a forthcoming issue of the Astrophysical Journal. Read More

Observations conducted by CASS Professor Adam Burgasser have revealed the presence of water ice and possibly methane on the distant dwarf planet 2007 OR10, nicknamed "Snow White". Prof Burgasser measured the planet's near-infrared spectrum using a new instrument called FIRE he helped build. Analysis by lead investigator Prof. Michael Brown of Caltech revealed features of water ice and methane, possibly be the remnants of an early atmosphere. The results appear in this month's issue of the Astrophysical Journal Letters. Read More

David Lai has been appointed to CASS as an Assistant Research Scientist effective September 1, 2011. Dr. Lai is an optical observer specializing in stellar spectroscopy and abundance determinations. Prior to his appointment at UCSD, he was an NSF Postdoctoral Fellow at UC Santa Cruz Astronomy Department. Please welcome Dr. Lai to CASS!

Assistant Professor Alison Coil has been selected as recipient of the 2010-2011 Hellman Faculty Fellows Award. The Hellman Fellowship Program was established at UCSD in 1995 through the generosity of Chris and Warren Hellman. The program is designed to provide financial support and encouragement to young faculty in the core disciplines who show capacity for great distinction in their research and creative activities. Funds awarded are primarily intended to enhance the individual's progress toward tenure. Read More

Alex Markowitz, CASS researcher, has been awarded an 18 month Alexander von Humboldt research fellowship for experienced researchers to travel to the Dr. Remeis Sternwarte (Observatory) in Bamberg, Germany for the study of the temporal/spectral properties of X-ray emitting galaxies. He will join the X-ray group headed by Dr. Joern Wilms, and will participate in the early results from the eRosita mission to be launched in 2013.

Michael Norman, CASS faculty member and director of the San Diego Supercomputer Center, has been appointed to serve on the advisory committee of the Mathematical and Physical Sciences (MPS) Directorate of the National Science Foundation. MPS encompasses the Divisions of Astronomical Sciences, Chemistry, Materials Research, Mathematical Sciences, Physics, and the Office of Multidisciplinary Activities. These organizations provide the basic structure for MPS support of research and education. Read More

Alison Coil, assistant professor of physics, and Mark Theimens, Dean of Physics Sciences, were recognized for helping women navigate the transition from graduate student to independent scientist, a critical time when many women drop out of the field. She has gathered a group of graduate students and postdocs in physics who regularly meet to discuss career strategies. With a roster of visitors and among themselves, they have talked about how to apply for jobs and negotiate an offer, how to counter the often unacknowledged biases that can work against their advancement, and the variety of employment opportunities available to people with a doctorate in physics.They also meet each spring with visiting prospective students, aiding the department's successful efforts to attract more women to the program. This thriving group now serves as a model for similar efforts to form communities among graduate students in other departments and for undergraduates.Chancellor Fox will recognize Theimens and Coil with campus-wide 2010 Equal Opportunity/Affirmative Action and Diversity Awards at a ceremony to be held Tuesday, February 8. Read More

The assembly of UCSD's telescope will commence shortly now that formal approval from the Chilean government for deployment in Chile's Atacama desert has been received. The telescope is part of the POLARBEAR project seeking to detect evidence for the inflationary epoch of the Big Bang. Read More

A team led by Bernie Jackson, using the Solar Mass Ejection Imager the team developed, has traced the waxing and waning light of exploding stars more closely than ever before and seen patterns that aren't yet accounted for in our current understanding of how these eruptions occur. Rebekah Hounsell, a graduate student at Liverpool John Moores University in Britain, made the measurements while visiting UCSD. Read More

Patrick Diamond, professor of physics, will share the European Physical Society's 2011 Hannes Alfvén Prize for outstanding contributions to plasma physics with Akira Hasegawa and Kunioki Mima, both of Osaka University in Japan. The three will be recognized "for laying the foundations of modern numerical transport simulations and key contributions on self-generated zonal flows and flow shear decorrelation mechanisms which form the basis of modern turbulence in plasmas." Diamond leads the plasma fusion group at UCSD. He founded and co-led the group with Marshall Rosenbluth, who was the 2002 recipient of this prize. Read More

Adam Burgasser, a recently appointed member of the UCSD Physics Dept., was awarded the Hellman Fellowship to support his research on brown dwarfs using the FIRE spectrograph. The Hellman Fellowship Program was established at UCSD in 1995 through the generosity of Chris and Warren Hellman, and is designed to provide financial support and encouragement to young faculty in the core disciplines who show capacity for great distinction in their research and creative activities. Eight proposals were selected for funding out of twenty-four submitted by the Biological Sciences, Physical Sciences, and Engineering Divisions. Read More

The Sloan Research Fellowships have been awarded since 1955 and is by far the oldest program of the Alfred P. Sloan Foundation, although those who receive the grants are among the youngest researchers the Foundation assists. The Fellowship program has grown in size and cost over the years and now includes several disciplines not covered in the beginning; but its purpose - to stimulate fundamental research by early-career scientists and scholars of outstanding promise - remains the same. The Sloan Research Fellowships support the work of exceptional young researchers early in their academic careers, and often at pivotal stages in their work," says Paul L. Joskow, President of the Alfred P. Sloan Foundation. Dr. Coil's field of research lies at the interface between large-scale structure and galaxy evolution, and she will receive a grant of $50,000 over a two year period. Read More

Adam Burgasser works on the physical properties and processes associated with the lowest mass stars and brown dwarfs Read More

Rich Lingenfelter and Rick Rothschild Read More

Prof. George Fuller & Chad Kishimoto Read More

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This prestigious honor has been awarded in recognition of his outstanding lifetime contributions to astronomy Read More

Dr. Alison Coil, an assistant professor of physics at UC San Diego, has been named a recipient of the 2009-2010 Hellman Faculty Fellows Award to support her research and creative activities Read More

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Dr. Coil is a leader in extragalactic observation and observational cosmology Read More

Michael L. Norman, distinguished professor of physics at the University of California, San Diego, was appointed to the new position of Chief Scientific Officer for SDSC Read More

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