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    supermassive black hole tagged posts

    ALMA finds a Swirling, Cool Jet that Reveals a Growing, Supermassive Black Hole

    July 4, 2016, Categories  Astronomy/Space

    Alma's close-up view of the centre of galaxy NGC 1377 (upper left) reveals a swirling jet. In this colour-coded image, reddish gas clouds are moving away from us, bluish clouds towards us, relative to the galaxy's centre. The Alma image shows light with wavelength around one millimetre from molecules of carbon monoxide (CO). A cartoon view (lower right) shows how these clouds are moving, this time seen from the side. The background colour image of NGC 1377 and its surroundings is a composite made from a visible light images taken at the CTIO 1.5-metre telescope in Chile by H. Roussel et al. (2006) (V filter; http://adsabs.harvard.edu/abs/2006ApJ...646..841R), and in filters r and i by ESO's VLT Survey Telescope [VST] Credit: CTIO/H. Roussel et al./ESO (left panel); Alma/ESO/NRAO/S. Aalto (top right panel); S. Aalto (lower right panel)

    Alma’s close-up view of the centre of galaxy NGC 1377 (upper left) reveals a swirling jet. In this colour-coded image, reddish gas clouds are moving away from us, bluish clouds towards us, relative to the galaxy’s centre. The Alma image shows light with wavelength around one millimetre from molecules of carbon monoxide (CO). A cartoon view (lower right) shows how these clouds are moving, this time seen from the side. The background colour image of NGC 1377 and its surroundings is a composite made from a visible light images taken at the CTIO 1.5-metre telescope in Chile by H. Roussel et al. (2006) (V filter; http://adsabs.harvard.edu/abs/2006ApJ…646..841R), and in filters r and i by ESO’s VLT Survey Telescope [VST] Credit: CTIO/H. Roussel et al./ESO (left panel); Alma/ESO/NRAO/S...

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    Gravitational Lens Zooms in on why some Quasars have the Radio turned down

    July 3, 2016, Categories  Astronomy/Space

    Reconstruction of the lensed radio-quiet quasar HS0810+2554 after removing the effects of the lensing. Right: the data from the Karl G. Jansky Very Large Array showing what the source looks like after passage through the lensing galaxy. The images are not to scale - the lensed image appears to be many times larger in the sky than the actual size of the source. Credit: N Jackson/NRAO

    Reconstruction of the lensed radio-quiet quasar HS0810+2554 after removing the effects of the lensing. Right: the data from the Karl G. Jansky Very Large Array showing what the source looks like after passage through the lensing galaxy. The images are not to scale – the lensed image appears to be many times larger in the sky than the actual size of the source. Credit: N Jackson/NRAO

    Mini-jets of material ejected from a central supermassive black hole appear to be the culprits behind faint radio wave emissions in ‘radio-quiet’ quasars. A study of gravitationally-lensed images of 4 radio-quiet quasars has revealed the structure of these distant galaxies in unprecedented detail...

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    Measuring the Shape of the Milky Way’s Black Hole

    June 26, 2016, Categories  Astronomy/Space

    Measuring the shape of the Milky Way's black hole

    This figure shows the locations of the radio telescopes linked together to observe the supermassive black hole at the center of our Milky Way. Credit: Ortiz-LeOn et al.

    At the heart of our galaxy’s center is SagA*, a supermassive black hole containing ~4 million solar-masses of material. SgrA* is relatively faint, unlike the supermassive black holes in some other galaxies. This is probably because, unlike its active cousins, it is not aggressively accreting material and so is neither heating up its environment nor ejecting particularly intense jets of fast-moving charged particles. Of course, it is also faint because it is located about 25 000 light years from Earth and because it is shrouded in absorbing, intervening dust...

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    Measuring a Black Hole 660M times as massive as our sun

    May 6, 2016, Categories  Astronomy/Space

    This is NGC 1332, a galaxy with a black hole at its center whose mass has been measured at high precision by ALMA. Credit: Carnegie-Irvine Galaxy Survey

    This is NGC 1332, a galaxy with a black hole at its center whose mass has been measured at high precision by ALMA. Credit: Carnegie-Irvine Galaxy Survey

    Findings could help shed light on how galaxies and their supermassive black holes form. It’s about 660 million times as massive as our sun, and a cloud of gas circles it at about 1.1 million mph. This supermassive black hole sits at the center of a galaxy NGC 1332, 73 million light years from Earth. And an international team of scientists that includes Rutgers associate professor Andrew J. Baker has measured its mass with unprecedented accuracy with Atacama Large Millimeter/submillimeter Array (ALMA).

    A black hole can form after matter, often from an exploding star, condenses via gravity...

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