Einstein@Home aggregates the computer power of hundreds of thousands of volunteers from 192 countries to mine large data sets. It has now found a 40.8-hertz isolated pulsar in radio survey data from the Arecibo Observatory taken in February 2007. Additional timing observations indicate that this pulsar is likely a disrupted recycled pulsar. PSR J2007+2722's pulse profile is remarkably wide with emission over almost the entire spin period; the pulsar likely has closely aligned magnetic and spin axes. The massive computing power provided by volunteers should enable many more such discoveries.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1126/science.1195253 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
A pulsar-like polarization angle swing from a nearby fast radio burst.
Nature
January 2025
Perimeter Institute for Theoretical Physics, Waterloo, Ontario, Canada.
Article Synopsis
- Fast radio bursts (FRBs) are intense signals from deep space that last for milliseconds and share some characteristics with pulsars, suggesting they may originate from neutron stars.
- Despite similarities, FRBs like 20221022A display different patterns in their linear polarization position angle (PA), particularly a 130° rotation that aligns with pulsar behaviors, hinting at magnetospheric origins.
- This study rules out short-period pulsars as potential sources for FRB 20221022A, supporting the idea that its unique PA evolution fits the rotating vector model commonly used for pulsars.
Corrigendum: Role of β-interferon inducer (DEAE-Dextran) in tumorigenesis by VEGF and NOTCH1 inhibition along with apoptosis induction.
Front Pharmacol
December 2024
Department of Pharmacology, Institute of Pharmacy, Nirma University, Ahmedabad, India.
[This corrects the article DOI: 10.3389/fphar.2017.
View Article and Find Full Text PDFImplications of cosmologically coupled black holes for pulsar timing arrays.
Sci Rep
December 2024
Department of Physics, University of Trento, Via Sommarive 14, 38123, Povo (TN), Italy.
It has been argued that realistic models of (singularity-free) black holes (BHs) embedded within an expanding Universe are coupled to the large-scale cosmological dynamics, with striking consequences, including pure cosmological growth of BH masses. In this pilot study, we examine the consequences of this growth for the stochastic gravitational wave background (SGWB) produced by inspiraling supermassive cosmologically coupled BHs. We show that the predicted SGWB amplitude is enhanced relative to the standard uncoupled case, while maintaining the [Formula: see text] frequency scaling of the spectral energy density.
View Article and Find Full Text PDFPersonalized Ultra-Fractionated Stereotactic Adaptive Radiotherapy for Non-Small Cell Lung Cancer Using Varian Ethos Therapy System.
Curr Oncol
December 2024
Specialty Hospital Radiochirurgia Zagreb, 10431 Sveta Nedelja, Croatia.
We present a patient treated with personalized ultra-fractionated stereotactic adaptive radiotherapy (PULSAR) for non-small cell lung cancer (NSCLC) using the adaptive Varian Ethos™ system equipped with the novel HyperSight imaging platform. Three pulses of 12 Gy were separated by a pause of four weeks during which the tumor was given enough time to respond to treatment. Only initial planning computed tomography (CT) was acquired on a CT simulator (Siemens Somatom Definition Edge), whereas other pulses were adapted using online cone beam computed tomography (CBCT) images (iCBCT Acuros reconstruction) acquired while the patient was lying on the treatment couch and delivered immediately.
View Article and Find Full Text PDFWill personalized ultrafractionated stereotactic adaptive radiotherapy (PULSAR) or split-course SBRT based on systemic therapy (3S) be future directions in the Field of SBRT?
Int Immunopharmacol
December 2024
Department of Radiation Oncology, Fujian Medical University Union Hospital, Fuzhou, China; Fujian Key Laboratory of Intelligent Imaging and Precision Radiotherapy for Tumors (Fujian Medical University), Fuzhou, Fujian, China; Clinical Research Center for Radiology and Radiotherapy of Fujian Province (Digestive, Hematological and Breast Malignancies), Fuzhou, Fujian, China. Electronic address:
The combined use of stereotactic body radiotherapy (SBRT) and immunotherapy is a promising new development. However, the optimal modality for combining SBRT with immunotherapy needs further study. Timmerman and colleagues reported that the time split between radiotherapy and α-PD-L1 therapy can affect the therapeutic effect and introduced a new SBRT paradigm-personalized ultrafractionated stereotactic adaptive radiation therapy (PULSAR).
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!