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RECENT POSTS

Arecibo Planetary Radar Returns to Action with Images of Asteroid Phaethon

Phaethon - Figure 1
Planetary December 22, 2017

Columbia, MD and Puerto Rico: After several months of downtime in the aftermath of Hurricane Maria, the Arecibo Observatory Planetary Radar returned to normal operation providing the best images to date of near-Earth asteroid 3200 Phaethon, which is thought to be the parent body for the Geminids meteor shower. Radar images reveal Phaethon to be roughly spherical with a diameter of about 6 km (3.6 mi), roughly 1 km (0.6 mi) larger than previous estimates. Read More

First Asteroid Detection since Hurricane Maria   December 12, 2017

Radar Observations and Shape Model of Asteroid 16 Psyche   Jul 21, 2017

Arecibo refines our knowledge of a potentially hazardous asteroid  Apr 17, 2017

Arecibo Observatory captures revealing images of Comet 45P/Honda-Mrkos-Pajdusakova   Feb 12, 2017

Discovery Announcement of Binary System (163693) Atira   Jan 20-23, 2017

Asteroids by the AO Planetary Radar Group

Astronomers peer into the lair of a mysterious source of cosmic radio bursts

Pulsar Astronomy Jan 10, 2018

Using the Arecibo Observatory in Puerto Rico and the Green Bank Telescope in West Virginia, a team from Universities Space Research Association (USRA) and other institutions today announced today at the American Astronomical Society’s winterAAS meeting that mysterious bursts of radio emission, called Fast Radio Bursts (FRB), may be coming from near a giant black hole. Read More

Why are Quasars so Bright?  JULY 18, 2017

The Mystery of Part Time Pulsars  JULY 18, 2017

Gaia Weighs in on the Pleiades Distance Controversy  Jan 27, 2017

Arecibo Puts Limits on Gravitational Wave Models   Jan 20, 2017

Arecibo Call for Ionospheric Modification (HF facility)

Space & Atmospheric Jul 21, 2017

The Arecibo Observatory invites you to submit proposals for the use of the HF facility during 2018. HF experiments at Arecibo are scheduled by demand in periods of 5-7 days around new moon. Proposals should specify the associated diagnostics required: the incoherent scatter radar (ISR), active and passive optical instruments and others. Read More

Mid-latitude Radio-Frequency Auroras   Jul 21, 2017

Nighttime plasma lines are measured at Arecibo (Vierinen et al. [2017]).  Jun 15, 2017

The sensitivity of the Arecibo Observatory made possible to observe Gyrolines 

Creating space plasma from the ground  Jan 14, 2017


Announcements

Arecibo Call for Ionospheric Modification (HF facility)
The Arecibo Observatory invites you to submit proposals for the use of the HF facility during 2018. HF experiments at Arecibo are scheduled by demand in periods of 5-7 days around new moon. Proposals should specify the associated diagnostics required: the incoherent scatter radar (ISR), active and passive optical instruments and others. Read More

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CAVEAT: The Arecibo Observatory is sponsored by the National Science Foundation. Any opinions, findings and conclusions or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

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