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Start Date:1938-10-26 End Date:1938-10-29 |
Creator:Papers of Grote Reber Series:Antennas Unit:Wheaton Antenna Type:Text |
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Start Date:1938-11-02 |
Creator:Papers of Grote Reber Series:Antennas Unit:Wheaton Antenna Type:Text |
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Start Date:1938-11-03 |
Creator:Papers of Grote Reber Series:Antennas Unit:Wheaton Antenna Type:Text |
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Start Date:1938-11-04 |
Creator:Papers of Grote Reber Series:Antennas Unit:Wheaton Antenna Type:Text |
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Start Date:1938-10-15 |
Creator:Papers of Grote Reber Series:Antennas Unit:Wheaton Antenna Type:Text |
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Creator:Papers of Grote Reber Series:Radio Astronomy Unit:Hectometer Cosmic Static Type:Text |
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Creator:Papers of Grote Reber Series:Radio Astronomy Unit:Hectometer Cosmic Static Type:Text |
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Creator:Papers of Grote Reber Series:Radio Astronomy Unit:Hectometer Cosmic Static Type:Text |
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Creator:Papers of Grote Reber Series:Radio Astronomy Unit:Hectometer Cosmic Static Type:Text |
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Creator:Papers of Grote Reber Series:Radio Astronomy Unit:Hectometer Cosmic Static Type:Text |
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Creator:Papers of Grote Reber Series:Radio Astronomy Unit:Hectometer Cosmic Static Type:Text |
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Creator:Papers of Grote Reber Series:Radio Astronomy Unit:Hectometer Cosmic Static Type:Text |
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Start Date:1969 Location:Green Bank, WV |
Creator:Records of the NRAO Series:Photographs Series Unit:NRAO Employees Unit Type:Still Image Original Format of Digital Item:B&W negative Subject:Employees |
Description:New employee. First name unknown.
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Start Date:1978 |
Creator:Papers of Grote Reber Series:Correspondence Series Unit:Research Corporation Correspondence Unit Subunit:Miscellaneous Research Corporation Material Subunit Type:Text |
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Start Date:1953? |
Creator:Papers of Grote Reber Series:Correspondence Series Unit:Research Corporation Correspondence Unit Subunit:Miscellaneous Research Corporation Material Subunit Type:Text |
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Start Date:1952-04-26 |
Creator:Papers of Grote Reber Series:Newspaper and Magazine Clippings Unit:Miscellaneous Newspaper and Magazine Clippings Type:Text |
Description:Jodrell Bank telescope
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Start Date:1952-04-26 |
Creator:Papers of Grote Reber Series:Newspaper and Magazine Clippings Series Unit:Miscellaneous Newspaper and Magazine Clippings Unit Type:Text |
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Creator:Legacy Astronomical Images Series:Active Galactic Nuclei Series Unit:Radio Galaxies Unit Type:Legacy Astronomical Image |
Description:VLBA 2 cm image of the radio galaxy 0402+379, which hosts two active supermassive black holes at its center. The location of each supermassive black hole is indicated on the image by an artist's conception of an accretion disk with narrow twin jets. These results are based upon multi-epoch, multi-frequency monitoring with the VLBA. The projected separation between the two black holes is 7.3 parsecs, making this the most compact binary black hole pair yet found by more than two orders of magnitude. The combined mass of the system is estimated at ~1.5 x 10^8 solar masses, and assuming equal masses the orbital period is 150,000 years. Though gravitational radiation from this system is not yet enough to cause the orbit to decay, the discovery of this system has implications for the number of compact binary black holes that might be detectable sources of gravitational radiation. [show more]
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Start Date:1950-08-11 |
Creator:Papers of Grote Reber Series:Newspaper and Magazine Clippings Unit:Newspaper and Magazine Clippings about Reber Type:Text |
Description:Attu expedition
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Start Date:1950-08-11 |
Creator:Papers of Grote Reber Series:Newspaper and Magazine Clippings Series Unit:Newspaper and Magazine Clippings About Reber Unit Type:Text |
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Start Date:1963-11-15 Location:Green Bank, WV People:Low, Frank
Carpenter, Tom
Davidson, Arnold
Bowyer, Omar |
Creator:Records of the NRAO Series:Photographs Series Unit:NRAO Other Telescopes Unit Type:Still Image Original Format of Digital Item:B&W negative Subject:Instruments--12 Foot Millimeter Wave Telescope |
Description:12 Foot Millimeter Wave Telescope behind the Jansky Lab. From left: Frank Low, Tom Carpenter, Arnold Davidson, Omar Bowyer [cropped image]
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Start Date:1963-11-15 Location:Green Bank, WV People:Low, Frank
Carpenter, Tom
Davidson, Arnold
Bowyer, Omar |
Creator:Records of the NRAO Series:Photographs Series Unit:NRAO Other Telescopes Unit Type:Still Image Original Format of Digital Item:B&W negative Subject:Instruments--12 Foot Millimeter Wave Telescope |
Description:12 Foot Millimeter Wave Telescope behind the Jansky Lab. From left: Frank Low, Tom Carpenter, Arnold Davidson, Omar Bowyer
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Start Date:1959-08-25 Location:Green Bank, WV |
Creator:Records of the NRAO Series:Photographs Series Unit:NRAO Other Telescopes Unit Type:Still Image Original Format of Digital Item:B&W negative Subject:Instruments--12 Foot Telescope |
Description:12 Foot Telescope distant view
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Start Date:1959-08-25 Location:Green Bank, WV |
Creator:Records of the NRAO Series:Photographs Series Unit:NRAO Other Telescopes Unit Type:Still Image Original Format of Digital Item:B&W negative Subject:Instruments--12 Foot Telescope |
Description:12 Foot Telescope dish and feed
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Start Date:1959-08-25 Location:Green Bank, WV |
Creator:Records of the NRAO Series:Photographs Series Unit:NRAO Other Telescopes Unit Type:Still Image Original Format of Digital Item:B&W negative Subject:Instruments--12 Foot Telescope |
Description:12 Foot Telescope close up
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