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The researchers weren't necessarily looking for this neutron star. Rather, it was happenstance as they searched for gravitational waves."At Green Bank, we're trying to detect gravitational waves from pulsars," said Maura McLaughlin, study author and Eberly Distinguished Professor of physics and astronomy at West Virginia University. "In order to do that, we need to observe lots of millisecond pulsars, which are rapidly rotating neutron stars. This is not a gravitational wave detection paper but one of many important results which have arisen from our observations."They were able to measure its mass because of a white dwarf companion star that warped the space around both stars. This warping acted as a way to accelerate the pulsar's pulses through space. They could learn the mass of the white dwarf and neutron star this way through the "Shapiro Delay.""Neutron stars are as mysterious as they are fascinating," said Thankful Cromartie, a graduate student at the University of Virginia and Grote Reber pre-doctoral fellow at the National Radio Astronomy Observatory in Charlottesville, Virginia. "These city-sized objects are essentially ginormous atomic nuclei. They are so massive that their interiors take on weird properties. Finding the maximum mass that physics and nature will allow can teach us a great deal about this otherwise inaccessible realm in astrophysics."Due to their mysterious nature, astronomers still want to answer more questions about neutron stars and this unique one could help them. They want to know if crushed neutrons become a type of "superfluid," what the breakdown looks like and where the actual tipping point lies when gravity takes over."The orientation of this binary star system created a fantastic cosmic laboratory," said Scott Ransom, study co-author and an astronomer at the National Radio Astronomy Observatory. "Neutron stars have this tipping point where their interior densities get so extreme that the force of gravity overwhelms even the ability of neutrons to resist further collapse. Each 'most massive' neutron star we find brings us closer to identifying that tipping point and helping us to understand the physics of matter at these mind-boggling densities." 2221

The subpoena from House Oversight Chairman Elijah Cummings to the White House includes a request for a host of documents and communications tied to the President's July 25 call with Ukrainian President Volodymyr Zelensky, the holding up of foreign aid to Ukraine and efforts by Trump's personal lawyer Rudy Giuliani and his associates to push the Ukrainians to investigate Vice President Joe Biden and Burisma, the company that hired Hunter Biden's son Hunter Biden to be on its board, according to a memo Cummings sent on the subpoena earlier this week."We deeply regret that President Trump has put us — and the nation — in this position, but his actions have left us with no choice but to issue this subpoena," Cummings of Maryland, House Intelligence Chairman Adam Schiff of California and House Foreign Affairs Chairman Eliot Engel of New York wrote in a letter to the White House on Friday.The subpoena escalates the Democratic impeachment investigation, which stems from the whistleblower complaint alleging Trump sought help from Ukraine's government to dig up dirt on his political rival and the White House sought to cover it up. The three panels leading the probe have already issued subpoenas to Secretary of State Mike Pompeo and Giuliani, in addition to Friday's White House subpoena.The request for documents to Pence, meanwhile, adds the vice president to a growing list of Trump officials and allies from who Democrats are seeking documents as part of the impeachment inquiry.The three chairmen leading the probe wrote a letter to Pence on Friday requesting the documents by October 15. A subpoena could also be looming for Pence if he does not voluntarily provide the documents.Rather than traveling to Warsaw, Poland, last month to meet with Ukrainian President Volodymyr Zelensky, Trump decided to stay home to track the damage from Hurricane Dorian. In his place he sent Pence, whose face-to-face meeting with Zelensky now puts him at the heart of events that led to the impeachment inquiry by the House of Representatives.The Democratic impeachment investigation stems from the whistleblower complaint alleging Trump sought help from Ukraine's government to dig up dirt on his political rival and the White House tried to cover it up.House Democrats have set an aggressive schedule of depositions to go along with their document requests as they have prepared to potentially file articles of impeachment related to Ukraine, putting the other matters they were investigating involving the President -- from Russian election interference to the Emoluments clause of the Constitution -- to the side.The vice president's spokesman said that the Democrats letter "does not appear to be a serious request.""Given the scope, it does not appear to be a serious request but just another attempt by the Do Nothing Democrats to call attention to their partisan impeachment," Pence spokeswoman Katie Waldman said in a statement. "Despite their efforts to distract and obstruct our agenda, this Administration will stay focused on creating jobs, securing the border, rebuilding our military, negotiating better trade deals, and the issues most important to the American people."The Trump administration has signaled it does not intend to cooperate with the House investigation on Ukraine, just as it has stonewalled previous requests related to allegations of obstruction of justice and efforts to obtain the President's tax returns and other financial documents. Pompeo wrote in a letter this week that he would try to block State Department officials from testifying, calling the schedule unfeasible, and it was unclear whether he would comply with a subpoena that had a Friday deadline.Trump said Friday that he would be issuing a letter to House Speaker Nancy Pelosi in response to the Democrats' request for documents. White House lawyers were drafting the letter saying they could not be compelled to produce documents until the full House votes to open an impeachment inquiry, something Pelosi has said is unnecessary according House rules.Previously, Democrats have responded to White House stonewalling with contempt votes and lawsuits to pry loose the materials they were seeking. But they now appear to be taking a different tack with the Ukraine inquiry: arguing that a failure to cooperate will make their case that obstruction of justice occurred."We don't want this to drag on months and months and months, which appears to be the Administration's strategy, so they just need to know that even as they try to undermine our ability to find the facts around the President's effort to coerce a foreign leader to create dirt that he can use against the political opponent, that they will be strengthening the case on obstruction if they behave that way," Schiff said at a newsconference this week.But the Democrats have had successes in obtaining information, too, including the testimony from former US special envoy to Ukraine Kurt Volker and text messages Volker provided showing that Trump's push for an investigation was linked to Ukraine's efforts to obtain a face-to-face meeting between the two presidents.Pence was told about the July 25 call between Trump and Zelensky a day after it occurred, sources told CNN, although they would not say whether the vice president was briefed about what Trump said about the Bidens. 5348

The resolution comes in the wake of a massive cheating scandal, which has soured the titles of two of the last three World Series champions. The cheating scandal has rocked the sport and led to the firing of three active MLB managers before the start of the 2020 season.In a report prepared by MLB earlier this month, MLB said the Astros stole the signs given by the catcher to the pitcher. Baseball Commissioner Rob Manfred's report said that the Astros used camera technology monitored by members of the Astros watching a monitor who would then relay the signs to the batter by making noise.The Astros then went on to defeat the Dodgers to win the 2017 World Series.In addition to MLB imposing a one-year suspension against GM Jeff Luhnow and manager AJ Hinch, MLB fined the Astros million and stripped four future draft picks from Houston. MLB opted not to punish players or strip the team of its title.The sign-stealing scandal reportedly was implemented by then Astros bench coach Alex Cora. Following the 2017 season, Cora was hired by the Red Sox to be their manager. Cora then led the Red Sox to a 2018 World Series title, also defeating the Dodgers. The Athletic reported that Cora also implemented a system of stealing signs while in Boston. It has been reported that MLB will release a separate report on the allegations that the Red Sox cheated en route to their 2018 title.Before Cora joined the Red Sox, the team was already 1442

The South Coast Air Quality Management District issued the advisory Sunday due to elevated levels of hydrogen sulfide detected immediately downwind of the huge desert lake. 172

The route on Sunday winds through Old Town, Mission Hills, Hillcrest and Balboa Park. A closing ceremony will take place Sunday at 4:30 p.m. at Waterfront Park in Downtown. 172

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