All posts tagged: Observatory

Vera C. Rubin Observatory to Detect Millions of Exploding Stars

Vera C. Rubin Observatory to Detect Millions of Exploding Stars

Published by Webster

A major scientific breakthrough is anticipated with the Vera C. Rubin Observatory, currently under construction on Cerro Pachón in Chile, as it prepares to embark on its decade-long Legacy Survey of Space and Time (LSST). Scheduled to commence this year, this endeavour is expected to detect millions of Type Ia supernovae, commonly referred to as “vampire stars” due to their ability to siphon material from nearby stellar companions. The data collected is likely to offer unprecedented insights into dark energy, the enigmatic force responsible for the universe’s accelerating expansion. Significance of Type Ia Supernovae in Measuring Cosmic Distances According to a report by space.com, Type Ia supernovae, resulting from the explosive end of white dwarf stars, have proven invaluable in cosmic measurements. Their light output is consistent, making them effective “standard candles” for determining distances across the universe. By analysing the brightness and colour of these supernovae, combined with data from their host galaxies, astronomers can map the extent of the universe’s expansion over time. Anais Möller, a researcher with the Rubin/LSST Dark Energy Science Collaboration, noted …

Is the Wheel of Ghosts an Ancient Observatory? New Study Suggests Otherwise

Is the Wheel of Ghosts an Ancient Observatory? New Study Suggests Otherwise

Published by Webster

The ancient Rujm el-Hiri site, situated in the Golan Heights and often referred to as the “Wheel of Ghosts,” has been re-evaluated, with its long-standing identification as an astronomical observatory coming under scrutiny. Researchers have determined that geodynamic changes over millions of years have altered the site’s orientation, raising questions about its original purpose. These findings, derived from advanced geophysical and remote sensing techniques, provide a new perspective on this enigmatic archaeological structure. Geophysical Insights Challenge Established Theories According to the study published in Remote Sensing, geodynamic movements averaging 8–15 millimetres per year over 150 million years shifted the site’s alignment significantly. Researchers from Tel Aviv University and Ben-Gurion University, led by Dr Olga Khabarova and Prof Lev Eppelbaum, concluded that the structure’s current orientation does not match celestial patterns, contradicting earlier interpretations of its function. The entrances and radial walls, when reconstructed to their original positions, were shown to lack alignment with solstices, equinoxes, or other astronomical markers. Advanced Techniques Reveal Archaeological Landscape As reported by SciTech Daily, the researchers employed geomagnetic analysis and …

Arecibo Observatory Data Helps SETI Uncover Secrets of Pulsar Signals and Cosmic Distortions

Arecibo Observatory Data Helps SETI Uncover Secrets of Pulsar Signals and Cosmic Distortions

Published by Webster

Years after the collapse of the Arecibo Observatory, its extensive datasets remain instrumental in advancing astronomical research. In a study led by Sofia Sheikh from the Search for Extraterrestrial Intelligence (SETI) Institute, data from the observatory was utilised to uncover new details about pulsar signals. These dense neutron stars emit beams of radiation likened to “cosmic lighthouses,” and their signals undergo distortions as they traverse the interstellar medium. Findings from this research were published in The Astrophysical Journal on November 26. Pulsar Signals and Interstellar Scintillation The study explored how pulsar signals are affected by interstellar gas and dust. Researchers investigated 23 pulsars, including six previously unstudied, revealing insights into distortive phenomena called diffractive interstellar scintillation (DISS). This phenomenon, which resembles the rippling patterns caused by light passing through water, is attributed to interactions between pulsar signals and charged particles in space. The Role of Arecibo’s Archival Data The now-defunct Arecibo radio telescope, once spanning 305 metres, collapsed in December 2020 due to cable failures. Despite its destruction, the data collected over decades continues to …

Namibian Observatory Spots Highest Energy Cosmic Electrons Opening Better Understanding of Cosmic Rays

Namibian Observatory Spots Highest Energy Cosmic Electrons Opening Better Understanding of Cosmic Rays

Published by Webster

After over a decade of research, the H.E.S.S. Observatory in Namibia has recorded the most energetic cosmic ray electrons ever detected, according to reports. These high-energy particles, comprising electrons and positrons, are believed to originate from intense cosmic phenomena such as supernova explosions, neutron stars, and black holes. The discovery suggests that the sources of these particles are likely to be within a few hundred light-years of the solar system. High-Energy Electron Detection Challenges The study, as per a Space.com report, highlights that these findings shed light on extreme cosmic processes. Dr Mathieu de Naurois, Deputy Director of the H.E.S.S. collaboration and a researcher at the French National Centre for Scientific Research, stated that understanding these cosmic rays allows us to unveil big particle accelerators in the universe that are often associated with the most violent phenomena. The research indicates that detecting these particles is particularly challenging due to their rarity and the difficulty in distinguishing them from other cosmic rays. Reports state that the H.E.S.S. Observatory utilised a vast telescope array designed to capture Cherenkov …

Chandra X-ray Observatory Spots Unusual Knots in Black Hole Jets

Chandra X-ray Observatory Spots Unusual Knots in Black Hole Jets

Published by Webster

Astronomers have uncovered unique, lumpy “knots” within a jet emerging from a black hole in the Centaurus A galaxy, thanks to NASA’s Chandra X-ray Observatory. These features, which exhibit varying speeds and brightness levels, have prompted researchers to re-evaluate their understanding of black hole jet mechanics. Notably, the knots appeared to travel faster when viewed in X-rays than in radio wavelengths, a discovery that adds complexity to how black hole jets are perceived across different wavelengths. The study, led by David Bogensberger, an astrophysicist at the University of Michigan, involved a detailed analysis of two decades of Chandra’s observations. Centaurus A, located around 12 million light-years from Earth, has been a focal point for astronomers studying black hole behaviour. Bogensberger’s team observed that one jet knot reached 94% of the speed of light, surpassing the 80% speed recorded in radio observations. This raises questions about the varying behaviour of these jets in distinct wavelengths, as noted in the study published in The Astrophysical Journal. Centaurus A’s Jet Dynamics Raise New Questions The differing speeds between …

Closure of Alappuzha weather observatory to leave a hole in forecasting capabilities of IMD on coastal stretch

Closure of Alappuzha weather observatory to leave a hole in forecasting capabilities of IMD on coastal stretch

Published by Parlour News

Even as the State has been demanding more weather monitoring stations in the wake of the rise in climate change-induced disasters, the India Meteorological Department’s (IMD) decision to close down it observatory in Alappuzha with effect from Tuesday may affect the weather monitoring capabilities in the coastal areas of the State. The IMD temporarily closed down the observatory, which started functioning way back in 1931 in the wake of an eviction notice issued by the Port department. The move will have a bearing on the forecasting capabilities of the agency along the coastal areas as there will be a big gap between Thiruvananthapuram and Kozhikode. The IMD’s four departmental observatories are in Thiruvananthapuram, Alappuzha, Kozhikode, and Kannur. Though it has part-time observatories at Punalur, Kottayam, and Palakkad, those are managed by local staff with less expertise and, many times, data absence has been reported from these observatories. The move comes at a time when the State and the IMD are looking to enhance the weather monitoring network by setting up observatories in Idukki and Wayanad, …

India Unveils MACE Observatory, the World’s Highest Imaging Cherenkov Telescope

India Unveils MACE Observatory, the World’s Highest Imaging Cherenkov Telescope

Published by Webster

The Major Atmospheric Cherenkov Experiment (MACE) observatory, the world’s highest imaging Cherenkov telescope, has been inaugurated in Hanle, Ladakh, at an elevation surpassing 4,300 metres. This facility is set to advance India’s role in space research and cosmic-ray studies, marking a new milestone in high-energy astrophysics. The observatory aims to explore cosmic phenomena such as supernovae, black holes, and gamma-ray bursts. Inauguration by Dr Ajit Kumar Mohanty Dr Ajit Kumar Mohanty, Secretary of the Department of Atomic Energy (DAE) and Chairman of the Atomic Energy Commission, officially inaugurated the MACE observatory. The event, held during the DAE’s Platinum Jubilee celebrations, included the opening of commemorative plaques, highlighting the telescope’s significance in India’s scientific community. According to Dr Mohanty, the observatory’s capabilities will bolster international collaborations and elevate India’s role in multimessenger astronomy. Indigenous Development by BARC The Bhabha Atomic Research Centre (BARC) constructed the MACE observatory in collaboration with the Electronics Corporation of India Limited, along with other Indian industry partners. As Asia’s largest imaging Cherenkov telescope, the facility underscores the strength of indigenous engineering …