A Search for Fast Pulsars along the Galactic Plane
نویسندگان
چکیده
We present results from a survey for fast pulsars at the Arecibo Observatory. Approximately 260 square degrees of sky were searched, primarily at Galactic latitude jbj < 8. Signals were sampled at intervals of 517 s, allowing for the possibility of detecting pulsars with periods as short as 1 ms or less. Sensitivity varied as a function of sky position. In a typical direction, long period pulsars with ux densities of order 0.9mJy at 430 MHz could be detected, although sensitivity to the fastest pulsars was somewhat curtailed. Sixty-one pulsars were detected, twenty-four of which were previously unknown. Four of the pulsars, two newly discovered, have millisecond periods.
منابع مشابه
A 1400-MHz pilot search for young pulsars
We have used the Effelsberg 100-m radio telescope to conduct a 1400-MHz (λ 21-cm) search for young and rapidly rotating radio pulsars along a 2 deg2 strip of the northern Galactic plane defined by 28◦ ≤ l ≤ 30◦ and |b| ≤ 0.5◦. This region lies close to the Scutum spiral arm which is already known to contain a number of radio and X–ray pulsars. The search was nominally sensitive to pulsars with ...
متن کاملPulsars and Their Nebulae as EGRET Sources
At the end of the EGRET mission, only 6-8 Galactic sources had been identified as young pulsars. Since then, several energetic pulsars have been discovered in EGRET error boxes along the Galactic plane, as well as several pulsar wind nebulae from which pulsations have not yet been discovered. Some of these nebulae are associated with moderately variable EGRET sources, suggesting that the γ-ray ...
متن کاملRecent Searches for Pulsars in Unidentified EGRET Error Boxes
Pulsars discovered since the end of the EGRET mission coincident with unidentified highenergy γ-ray sources are prime targets for AGILE. Both general surveys and targeted observations have been successful in finding energetic young pulsars in the plane of the Galaxy. For the latter, hard X-ray imaging followed by deep radio searches of X-ray sources is a proven route. High-resolution Chandra X-...
متن کاملAn Update on the Status of the Pulsar-ALFA Survey
The Pulsar-ALFA (PALFA) survey is designed to search the Galactic plane for pulsars at 1.4 GHz using the Arecibo Observatory’s 7-beam ALFA receiver. The 64-μs sampling time, 0.336-MHz frequency resolution and 300 MHz bandwidth of the observations are allowing for the detection of millisecond pulsars (MSPs) 2-3 times more distant than previous surveys. To date, PALFA has discovered 55 pulsars, s...
متن کاملThe Parkes multibeam pulsar survey: VI. Discovery and timing of 142 pulsars and a Galactic population analysis
We present the discovery and follow-up observations of 142 pulsars found in the Parkes 20-cm multibeam pulsar survey of the Galactic plane. These new discoveries bring the total number of pulsars found by the survey to 742. In addition to tabulating spin and astrometric parameters, along with pulse width and flux density information, we present orbital characteristics for 13 binary pulsars whic...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2007